Physics in Canada
\ ne Bulletin o i t h e Canaclian Association of Physicists
Volume 23, N o . 2
Congress Issue 1967
Vhysics in Canada
The Bulletin of the Canadian
Association of
Bulletin de 1'Association canadienne
Physicists
des physiciens
La Physique au Canada
V o l . 23, N o . 2, J u n e 1967
ANNUAL CONGRESS, JUNE 20-23
University of Toronto, Toronto, Ontario
Comité d'organisation
Local Committee
G. D. Scott (Chairman), E. J. Allin, R. L. Armstrong,
D. G. Ivey, J. M. Perz, R. E. Pugh, J. C. Stryland,
L. E. H. Trainor, H. L. Welsh
Comité du Programme
Program Committee
Physics: L. G. Elliott, P. A. Forsyth, H. E. Petch, J. M. Robson,
R. E. Bell, J. Van Kranendonk, H. L. Welsh, P. Lorrain,
J. W. Moffat. Medical: S. Fedoruk, P. Bird, J. R. Cunningham,
R. J. Horsley. Earth Physics: E. Blanchard, G. F. West, D. York
C.A.P. EXECUTIVE. President: J. M. Robson. University of Ottawa. Past President-.
R. E. Bell, McGill University. Vice-President:
H. E. Petch, McMaster University.
Se cretary: L. E. H. Trainor, University of Toronto. Treasurer:
C. V. Stager.
McMaster University. Directors:
A. Douglas. National Research Council; J.
Le Tourneux, Université de Montréal; Miss P. Dworkin. University of T o r o n t o .
Division Chairmen:
Medical and Biological Physics: R. J. Horsley; Theoretical
Physics. R. R. Haering, Simon Fraser University; Earth Physics: C. M.
Carmichael, University of Western Ontario. Registrar:
I. D. Brown, McMaster
University. Editor: E. W. Vogt, University of British Columbia.
C.A.P. COUNCIL. B.C. and Yukon:
R. R. Haering. K. C. Mann. Alberta:
E. R.
Kanasewich. A. Buckmaster. Saskatchewan
and Manitoba:
H. M. Skarsgard.
S. K. Sen. S.W. Ontario:
B. C. Eastman, J. L. Hunt. Central and
Northern
Ontario: F. D. Manchester. G . R. Hébert. Eastern Ontario: T. S. Hutchinson.
E. S. Warren. Quebec: A. Boivin, F. T. Hedgcock. New Brunswick
and Newfoundland:
D. H. Rendell, W. B. B;iker. Nova Scotia and P.E.I.: 1. K. MacKenzie.
I. M. H. Pagden. At Large: M. P. Bachynski, F. S. Eadie.
EXECUTIVE ADDRESS: Dept. of Physics, McMaster University, Hamilton, Ont.
P U B L I S H E D FOR THE ASSOCIATION BY THE UNIVERSITY OF TORONTO
AUTHORIZED
AS SECOND CLASS
MAIL
BY THE
POST OFFICE
PRESS
DEPARTMENT.
AND FOR P A Y M E N T OF POSTAGE IN CASH
OTTAWA.
19 6 7
CONGRES DE L ' A . C . P .
C . A . P . CONGRESS
and
T R I P A R T I T E MEETING
of
THE AMERICAN PHYSICAL SOCIETY
L'ASSOCIATION CANADIENNE DES PHYSICIENS
THE CANADIAN ASSOCIATION OF PHYSICISTS
and
LA SOCIEDAD MEXICANA DE FISICA
J u n e 20-23
University Toronto
Toronto, Ontario, Canada
- 2 -
THE CANADIAN ASSOCIATION O F PHYSICISTS invites applications
for membership f r o m physicists,
s c i e n t i s t s and e n g i n e e r s whose w o r k is
r e l a t e d to p h y s i c s , f r o m t e a c h e r s of p h y s i c s a n d f r o m u n i v e r s i t y
studying physics or an allied c o u r s e .
students
Besides organizing an annual
c o n g r e s s a n d s p e c i a l s y m p o s i a of i t s s u b j e c t d i v i s i o n s ,
the A s s o c i a t i o n is
a c t i v e i n s u p p o r t i n g h i g h s c h o o l a n d u n i v e r s i t y e d u c a t i o n i n p h y s i c s by
o r g a n i z i n g p r i z e e x a m i n a t i o n s a n d in e n c o u r a g i n g s t u d e n t s to e m b a r k
upon physics as a c a r e e r .
bulletin,
All m e m b e r s r e c e i v e the A s s o c i a t i o n ' s own
P H Y S I C S IN C A N A D A , a n d m e m b e r s h i p l i s t s f r o m t i m e to t i m e .
A r r a n g e m e n t s h a v e b e e n m a d e s o t h a t m e m b e r s m a y s u b s c r i b e to v a r i o u s
journals at reduced cost.
SCIENCES,
T h e s e include CANADIAN J O U R N A L O F E A R T H
CANADIAN JOURNAL O F PHYSICS,
CONTEMPORARY
PHYSICS, and THE PHYSICS T E A C H E R .
S u b j e c t d i v i s i o n s of T h e o r e t i c a l P h y s i c s , M e d i c a l a n d B i o l o g i c a l
P h y s i c s and E a r t h P h y s i c s a r e active.
When d e m a n d w a r r a n t s ,
other
d i v i s i o n s m a y be f o r m e d .
T h e a n n u a l m e m b e r s h i p f e e s of t h e A s s o c i a t i o n a r e a s f o l l o w s :
Members,
$13; a s s o c i a t e m e m b e r s ,
$6; s t u d e n t m e m b e r s ,
further details regarding membership,
A s s o c i a t i o n of P h y s i c i s t s ,
$2.
w r i t e the R e g i s t r a r ,
McMaster University, Hamilton,
For
Canadian
Ontario.
A r r a n g e m e n t s f o r c o r p o r a t e m e m b e r s h i p s h o u l d be m a d e by c o n t a c t i n g
D r . K. L . S. G u n n , P h y s i c s D e p a r t m e n t , M c G i l l U n i v e r s i t y ,
Quebec.
Montreal,
3 .
CONGRES DE L'A. C. P.
PROGRAMME ABRÉGÉ
Monday,
C. A. P. CONGRESS
ABRIDGED PROGRAM
J u n e 19
Room
Registration
Foyer,
M e e t i n g of E x e c u t i v e a n d C o u n c i l
314,
Registration
Foyer,
9:30 a . m .
P r e s i d e n t i a l A d d r e s s and B u s i n e s s Meeting
Cody Hall
S c h o o l of N u r s i n g
2 : 0 0 p. m .
S y m p o s i u m a n d D i s c u s s i o n on " P h y s i c s in
Canada: Survey and Outlook"
- G e n e r a l R e p o r t - A. C . H o l l i s H a l l e t t
- R e c o m m e n d a t i o n s - R. E. Bell
- J o i n t I n s t i t u t e s - L . E . H. T r a i n o r
Cody Hall
S c h o o l of N u r s i n g
8:00 p . m .
M e e t i n g to d i s c u s s t h e a d v i s a b i l i t y of
establishing a solid state division
102,
6 : 0 0 p. m . 10:00 p . m .
8:00 p . m .
Tuesday,
McLennan
McLennan
J u n e 20
9:00 a . m . 1 2 : 3 0 p. m .
Wednesday,
McLennan
McLennan
J u n e 21
5:30 p . m . 7 : 0 0 p. m .
R e c e p t i o n b y t h e U n i v e r s i t y of T o r o n t o
The Quadrangle
University College
8 : 3 0 p. m .
J o i n t M e e t i n g of O l d a n d N e w C o u n c i l s
314,
Thursday,
McLennan
J u n e 22
4 : 0 0 p. m .
M e e t i n g of C. A. P . D i v i s i o n of M e d i c a l a n d
B i o l o g i c a l P h y s i c s to d i s c u s s b r o a d e n i n g
t h e s c o p e of t h e D i v i s i o n
158, L a s h M i l l e r
6 : 0 0 p. m .
Cocktails
The Quadrangle
University College
7:00 p . m .
B a n q u e t of A. P . S. , C. A. P . a n d S, M . F .
- P r e s e n t a t i o n of C . A. P . A w a r d s i n c l u d i n g
C . A . P . M e d a l to D r . B . N. B r o c k h o u s e
- P r e s e n t a t i o n of A. P . S. 1967 D a v i s s o n G e r m e r P r i z e to D r . H. R . C r a n e
- A f t e r - d i n n e r S p e e c h b y D r . H. E . D u c k w o r t h
The G r e a t Hall
Hart House
4 -
TRIPARTITE MEETING
THE AMERICAN PHYSICAL SOCIETY
L'ASSOCIATION CANADIENNE DES PHYSICIENS/THE CANADIAN ASSOCIATION OF PHYSICISTS
LA SOCIEDAD MEXICANA DE FISICA
T h e M e d i c a l a n d B i o l o g i c a l P h y s i c s D i v i s i o n of t h e C a n a d i a n
A s s o c i a t i o n of P h y s i c i s t s w i l l b e j o i n e d i n i t s m e e t i n g b y t h e A m e r i c a n
A s s o c i a t i o n of P h y s i c i s t s i n M e d i c i n e .
ABRIDGED PROGRAM
WEDNESDAY,
PROGRAMME
ABREGE
J u n e 21, 9:00 a . m .
AA.
S Y M P O S I A O F T H E DIVISION O F E L E C T R O N AND A T O M I C
PHYSICS; LASER PHYSICS I: B l o e m b e r g e n , A v i z o n i s ,
H a g e n l o c k e r , K e l l e y , T e l l e r . O l d M c L e n n a n 135.
AB.
I N V I T E D P A P E R S O N P A R T I C L E P H Y S I C S (A): A b o l i n s ,
M e s h k o v , T h r e s h e r , S u d a r s h a n , Y o d h . M c L e n n a n 103.
AC.
J O I N T S E S S I O N O F T H E DIVISION O F F L U I D D Y N A M I C S A N D
P L A S M A PHYSICS: Sandri, F r e n c h , B e r n s t e i n , Lovberg.
M c L e n n a n 202.
AD.
INSTABILITY,
AE.
N U C L E A R R E A C T I O N S I.
AF.
A P P A R A T U S O F NUCLEAR PHYSICS.
AG.
MOSTLY ATMOSPHERIC PHYSICS.
AH.
O P T I C A L P R O P E R T I E S O F SOLIDS (MOSTLY SEMICONDUCTORS).
M c L e n n a n 134.
AI.
NMR AND E S R .
AJ.
M E D I C A L A N D B I O L O G I C A L P H Y S I C S I.
WAVES AND KINETIC THEORY.
M c L e n n a n 203.
L a s h M i l l e r 159.
R a m s e y W r i g h t 110.
R a m s e y W r i g h t 117.
L a s h M i l l e r 161.
Lash Miller
158.
- 5 -
W E D N E S D A Y , J u n e 21, 2:00 p . m .
BA.
S Y M P O S I U M O F T H E DIVISION O F E L E C T R O N A N D A T O M I C
P H Y S I C S ; L A S E R S II: S c h a w l o w , R a m s d e n , C h a b b a l a n d B r o c h a r d ,
J a v a n . Old M c L e n n a n 135.
BB.
I N V I T E D P A P E R S ON P A R T I C L E P H Y S I C S (B): T i n g ,
B l a n k e n b e c l e r , L i n d e n b a u m , N e ' e m a n . M c L e n n a n 103.
BC.
PLASMA PHYSICS - E X P E R I M E N T A L :
B e k e f i . M c L e n n a n 202.
BD.
F L U I D D Y N A M I C S ; S H O C K W A V E S AND G E N E R A L .
BE.
P L A S M A PHYSICS; S P A C E AND G E N E R A L T H E O R E T I C A L .
L a s h M i l l e r 159.
BF.
N E U T R O N PHYSICS.
BG.
ATOMIC AND M O L E C U L A R S P E C T R O S C O P Y .
BH.
M Ô S S B A U E R E F F E C T A N D O P T I C A L S P E C T R A IONS A N D S O L I D S .
M c L e n n a n 134.
BI.
SEMICONDUCTORS.
BJ.
M E D I C A L A N D B I O L O G I C A L P H Y S I C S II.
Jahn, P o s t m a ,
Stern,
M c L e n n a n 203.
R a m s e y W r i g h t 110.
R a m s e y W r i g h t 117.
L a s h M i l l e r 161.
L a s h M i l l e r 158.
- 6 -
WEDNESDAY,
J u n e 21, 2:00 p . m .
CA.
S Y M P O S I U M O F T H E DIVISION O F E L E C T R O N A N D A T O M I C
PHYSICS E X P E R I M E N T A L TESTS O F T AND C INVARIANCE
A T LOW E N E R G I E S : W o l f e n s t e i n , S a n d a r s , C o m m i n s ,
B e r k o . M c L a n n a n 102.
CB.
I N V I T E D P A P E R S ON N U C L E A R P H Y S I C S (A):
P e r e y , C h a c o n , V o l k o v . M c L e n n a n 103.
CC.
PLASMA PHYSICS - T H E O R E T I C A L :
L e v i n . M c L e n n a n 202.
CD.
R A M A N S C A T T E R I N G A N D O P T I C A L E F F E C T S IN SOLIDS.
M c L e n n a n 203.
CE.
N U C L E A R R E A C T I O N S II.
CF.
NUCLEAR THEORY.
CG.
L A S E R S I.
CH.
COLOR C E N T E R S ,
M c L e n n a n 134.
CI.
SOLID S T A T E THEORY.
CJ.
M E D I C A L A N D B I O L O G I C A L P H Y S I C S III.
CK.
E A R T H P H Y S I C S I.
Litherland,
Coppi, Krall,
Newcomb,
L a s h M i l l e r 159.
R a m s e y W r i g h t 110.
R a m s e y W r i g h t 117.
DEFECTS, CRYSTAL STRUCTURE.
L a s h M i l l e r 161.
L a s h M i l l e r 162.
L a s h M i l l e r 1 58.
- 7 -
WEDNESDAY,
J u n e 21, 2:00 p . m .
DA.
S Y M P O S I U M ON T H E O R E T I C A L S O L I D S T A T E P H Y S I C S :
M a k i , V a n K r a n e n d o n k , H a e r i n g . M c L e n n a n 102.
Rice,
DB.
I N V I T E D P A P E R S ON N U C L E A R P H Y S I C S (B):
M e l l o , H a r v e y , S a m p l e . M c L e n n a n 103.
DC.
DIVISION O F F L U I D D Y N A M I C S I; I N V I T E D P A P E R S :
K o v a s z n a y , C h a r t e r s , R i b n e r , F l a g g a n d G l a s s , R e s h o t k o and
R o s e n t h a l , C h a n , W a d e a n d Koo, O r l i k - R u c k e m a n n , P a y n e .
M c L e n n a n 202.
DD.
P L A S M A PHYSICS; E X P E R I M E N T A L I - T H E R M O N U C L E A R
A N D R E L A T E D T O P I C S . M c L e n n a n 203.
DE.
N U C L E A R R E A C T I O N S III.
DF.
HIGH E N E R G Y P H Y S I C S - E X P E R I M E N T A L .
DG.
L A S E R S II.
DH.
POSITRONS AND G E N E R A L TOPICS.
DI.
PHONON S P E C T R A .
DJ.
I N V I T E D P A P E R S ON C O M P U T E R S IN M E D I C A L P H Y S I C S :
Holt, R i t t e r and Laughlin; P e t e r s o n , Gibbs, Davis, A d a m s and
C o l l i n s ; G a l l a g h e r ; C u n n i n g h a m ; R a w l i n s o n . L a s h M i l l e r 158.
DK.
POSTDEADLINE PAPERS.
DL.
E A R T H P H Y S I C S II.
Barnes,
L a s h M i l l e r 159.
R a m s e y W r i g h t 110.
R a m s e y W r i g h t 117.
M c L e n n a n 134
L a s h M i l l e r 161.
M c L e n n a n 134.
L a s h M i l l e r 162.
- 8 -
F R I D A Y , J u n e 23, 9 : 0 0 a . m .
EA.
S Y M P O S I U M ON L A T T I C E D Y N A M I C S : D a n i e l s ,
S h i r a n e , W o o d s , B r o c k h o u s e . M c L e n n a n 102.
Cowley,
EB.
I N V I T E D P A P E R S ON N U C L E A R P H Y S I C S ( C ) : M o s h i n s k y ,
L e T o u r n e a u , M a r g o l i s , G o v e , M o n d r a g ^ n . M c L e n n a n 103.
EC.
S Y M P O S I U M O F T H E DIVISION O F P L A S M A P H Y S I C S O F
A P S A N D T H E E A R T H S C I E N C E S DIVISION O F C A P ; P L A N E T A R Y
AND S P A C E PLASMAS: B a c h y n s k i , B r i c e , Heikkila, B a r r i n g t o n .
M c L e n n a n 202.
ED.
P L A S M A P H Y S I C S ; E X P E R I M E N T A L II . A R C S ,
A N D G L O W S . M c L e n n a n 203.
EE.
N U C L E A R R E A C T I O N S IV.
EF.
T H E O R E T I C A L PHYSICS.
EG.
ATOMIC AND M O L E C U L A R PHYSICS (THEORY).
W r i g h t 117.
EH.
M E T A L S AND ALLOYS.
EI.
H E A L T H P H Y S I C S S Y M P O S I U M (A) - R E G U L A T O R Y C O N T R O L S ,
G U I D E S A N D R E C O M M E N D A T I O N S . L a s h M i l l e r 158.
DISCHARGES
L a s h M i l l e r 159.
R a m s e y W r i g h t 110.
Ramsey
M c L e n n a n 134.
O P E R A T I O N A L H E A L T H PHYSICS.
EJ.
E A R T H P H Y S I C S HI.
ES.
DIVISION O F F L U I D D Y N A M I C S II.
Studies.
L a s h M i l l e r 158.
L a s h M i l l e r 162.
Institute for Aerospace
- 9 -
F R I D A Y , J u n e 23, 2 : 0 0 p . m .
FA.
S Y M P O S I U M ON M E T A L P H Y S I C S :
C o c h r a n , M a r c u s . M c L e n n a n 102.
FB.
T R A N S P O R T P R O P E R T I E S O F SOLIDS:
FC.
G E N E R A L ATOMIC AND M O L E C U L A R PHYSICS.
FD.
P L A S M A P H Y S I C S ; E X P E R I M E N T A L III - G E N E R A L
E X P E R I M E N T A L AND D I A G N O S T I C S . M c L e n n a n 203.
FE.
N U C L E A R R E A C T I O N S V.
FF.
T H E O R E T I C A L AND G E N E R A L PHYSICS.
R a m s e y W r i g h t 110.
FG.
R E L A X A T I O N E F F E C T S , ESR A N D N M R .
R a m s e y W r i g h t 117.
FH.
S U P E R C O N D U C T I V I T Y AND T U N N E L I N G .
M c L e n n a n 134.
FI.
MAGNETISM AND F E R R O E L E C T R I C S .
FJ.
H E A L T H P H Y S I C S S Y M P O S I U M (B) - O P E R A T I O N A L H E A L T H
P H Y S I C S . L a s h M i l l e r 158.
RADIOBIOLOGY.
POSTDEADLINE PAPERS.
FL.
E A R T H P H Y S I C S IV.
Datars,
M c L e n n a n 103.
M c L e n n a n 202.
L a s h M i l l e r 159.
Lash Miller
FK.
Schoenberg,
L a s h M i l l e r 161.
158.
M c L e n n a n 134.
L a s h M i l l e r 162.
- 10 -
SUMMARY OF SESSIONS
W E D N E S D A Y , J u n e 21, 2:00 p . m .
S e s s i o n AA
S Y M P O S I A O F T H E DIVISION O F
E L E C T R O N AND ATOMIC PHYSICS;
LASER PHYSICS I
C. H. T o w n e s , C h a i r m a n
Old M c L e n n a n
135
AA
1.
NORMAL AND ANOMALOUS S T I M U L A T E D RAMAN SCATTERING
IN F L U I D S . N. B l o e m b e r g e n , H a r v a r d U n i v e r s i t y . (30 m i n . )
AA
2.
O B S E R V A T I O N S O F S T I M U L A T E D R A M A N S C A T T E R I N G IN
H Y D R O G E N . P . V. A v i z o n i s , A i r F o r c e W e a p o n s L a b o r a t o r y .
(30 m i n . )
AA
3.
S T I M U L A T E D B R I L L O U I N S C A T T E R I N G IN G A S E S AND LIQUIDS.
E . H a g e n l o c k e r , F o r d R e s e a r c h L a b o r a t o r y . (30 m i n . )
AA
4.
D Y N A M I C S O F I N T E N S E L I G H T B E A M S IN N O N L I N E A R M E D I A .
P . L . K e l l e y , L i n c o l n L a b o r a t o r y , M . I. T . (30 m i n . )
AA
5.
ON A P H O T O : ' A C C E L E R A T O R .
C a l i f o r n i a . (30 m i n . )
E d w a r d T e l l e r , U n i v e r s i t y of
W E D N E S D A Y , J u n e 21, 9:00 a . m .
S e s s i o n AB
I N V I T E D P A P E R S ON P A R T I C L E
P H Y S I C S (A)
E, P. Hincks, Chairman
McLennan
103
AB
1.
MESON RESONANCES.
L a b o r a t o r y . (30 m i n . )
M. A. A b o l i n s , L a w r e n c e R a d i a t i o n
AB
2.
P R E D I C T I O N S O F HIGH S Y M M E T R Y S C H E M E S .
S. M e s h k o v , N a t i o n a l B u r e a u of S t a n d a r d s . (30 m i n . )
AB
3.
K " p A N D i r ' p P O L A R I Z A T I O N IN T H E R E S O N A N C E R E G I O N .
J . J . T h r e s h e r , R u t h e r f o r d H i g h E n e r g y L a b o r a t o r y . (30 m i n . )
AB
4.
THE NATURE O F UNIVERSAL INTERACTIONS B E T W E E N
E L E M E N T A R Y P A R T I C L E S . E . C. G. S u d a r s h a n , S y r a c u s e
U n i v e r s i t y . (30 m i n . )
- il -
AB
5.
EXPERIMENTAL TESTS OF REACTION PREDICTIONS OF
F U ( 3 ) . G. B . Y o d h , U n i v e r s i t y of M a r y l a n d .
WEDNESDAY,
J u n e 21, 9:00 a . m .
S e s s i o n AC
J O I N T SESSION O F T H E DIVISION O F
F L U I D DYNAMICS AND P L A S M A
PHYSICS
G. N. P a t t e r s o n , C h a i r m a n
McLennan
202
AC
1.
K I N E T I C T H E O R Y T O D A Y . G. S a n d r i , A e r o s p a c e
A s s o c i a t e s of P r i n c e t o n . (30 m i n . )
AC
2.
M O L E C U L A R B E A M S AND GAS S U R F A C E I N T E R A C T I O N AND
THEIR A P P L I C A T I O N S TO S P A C E R E S E A R C H .
J . B. F r e n c h ,
I n s t i t u t e f o r A e r o s p a c e S t u d i e s , U n i v e r s i t y of T o r o n t o , (30 m i n . )
AC
3.
KINETIC THEORY OF TRANSPORT COEFFICIENTS.
B e r n s t e i n , Y a l e U n i v e r s i t y . (30 m i n . )
AC
4.
C O - R E L A T E D S C H L I E R E N AND P R O B E M E A S U R E M E N T S O F
IMPULSIVELY GENERATED PLASMAS. Ralph Lovberg,
U n i v e r s i t y of C a l i f o r n i a , S a n D i e g o . (30 m i n . )
WEDNESDAY,
Research
Ira
J u n e 21, 9:00 a . m .
S e s s i o n AD
INSTABILITY, WAVES AND KINETIC THEORY
C. Coppi, C h a i r m a n
McLennan
203
AD
1.
F L U T E - L I K E " L O S S - C O N E " I N S T A B I L I T I E S IN M U L T I C O M P O N E N T P L A S M A S . W. M . F a r r a n d R . E . B u d w i n e ,
Oak Ridge National Laboratory.
AD
2.
E F F E C T O F PLASMA P O T E N T I A L AND MAGNETIC CURVATURE
ON A H I G H - F R E Q U E N C Y I N S T A B I L I T Y I N H E R E N T TO "LOSSCONE" P A R T I C L E DISTRIBUTIONS.
L e w i s C. H i m m e l l ,
NASA-Lewis Research Center.
AD
3.
S T A B I L I Z I N G E F F E C T O F T H E R M A L I N H O M O G E N E I T Y ON
S C R E W I N S T A B I L I T Y . C h u l M o K i m a n d H. S. D u n n , U n i v e r s i t y
of R o c h e s t e r .
- 12 -
AD
4.
K I N E T I C BALLOONING INSTABILITIES: T R A P P E D WAVE
M O D E S . S. Y o s h i k a w a , P l a s m a P h y s i c s L a b . , P r i n c e t o n
University.
AD
5.
QUANTUM M E C H A N I C A L THEORY O F TRANSVERSE WAVE
I N S T A B I L I T I E S IN A N O N - U N I F O R M P L A S M A . G a r y M . W a l t e r s
a n d E d w a r d G. H a r r i s s , U n i v e r s i t y of T e n n e s s e e .
AD
6.
ON T H E R A D I A T I O N O F E L E C T R O M A G N E T I C W A V E S IN A
PLASMA. E. B r a u n , R e a c t o r . C e n t r o N u c l e a r de Mexico.
C o m i s i ô n Nacional de E n e r g i a N u c l e a r .
Mexico.
AD
7.
E V O L U T I O N O F M A Y E R C O R R E L A T I O N S IN A
A. K r i t z , A e r o n a u t i c a l R e s e a r c h A s s o c i a t e s of
S. R a d i n , A e r o n a u t i c a l R e s e a r c h A s s o c i a t e s of
L e h i g h U n i v e r s i t y , a n d G. S a n d r i , A e r o n a u t i c a l
A s s o c i a t e s of P r i n c e t o n .
AD
8.
K I N E T I C T H E O R Y F O R A P L A S M A IN A S T R O N G M A G N E T I C
F I E L D . S. R a d i n , A e r o n a u t i c a l R e s e a r c h A s s o c i a t e s of P r i n c e t o n
a n d L e h i g h U n i v e r s i t y , A. K r i t z a n d G. S a n d r i , A e r o n a u t i c a l
R e s e a r c h A s s o c i a t e s of P r i n c e t o n .
AD
9.
N O N - L I N E A R C O U P L I N G O F P L A S M A O S C I L L A T I O N S A N D ION
SOUND WAVES TO T R A N S V E R S E E L E C T R O M A G N E T I C WAVES.
R . E . B u d w i n e , O a k R i d g e N a t i o n a l L a b . , E . G. H a r r i s , a n d
R . S u g i h a r a , U n i v e r s i t y of T e n n e s s e e a n d O a k R i d g e N a t i o n a l L a b .
PLASMA.
Princeton,
P r i n c e t o n and
Research
A D 10.
E X C I T A T I O N O F O S C I L L A T I O N S BY AN E L E C T R O N C U R R E N T
IN A W E A K L Y I O N I Z E D P L A S M A . G. P o c o b e l l i , U n i v e r s i t y of
Saskatchewan.
A D 11.
N E T W O R K S Y N T H E S I S O F P L A S M A . M a r c R . F e i x , C o l l e g e of
W i l l i a m a n d M a r y , a n d NASA, L a n g l e y .
A D 12.
W A V E S N E A R T H E ION P L A S M A F R E Q U E N C Y .
and R. L. M o o r e , Douglas A i r c r a f t C o m p a n y .
A D 13.
T H E I M P L I C A T I O N S O F T H E S P A T I A L I N H O M O G E N E I T Y ON
H A R M O N I C A N D S U B H A R M O N I C G E N E R A T I O N IN T H E P O S I T I V E
C O L U M N . R . E . M c i n t o s h , H. C . S. H s u a n a n d K a r l E . L o n n g r e n ,
U n i v e r s i t y of I o w a .
R. J.
Sunderland
- 13 -
WEDNESDAY,
J u n e 21, 2:00 p . m .
S e s s i o n AE
NUCLEAR REACTIONS I
L . G. E l l i o t t , C h a i r m a n
Lash Miller
159
AE
1.
P R O T O N S C A T T E R I N G A T 100 M e V .
N. K. S h e r m a n , M c G i l l U n i v e r s i t y .
AE
2.
PROTON- PROTON BREMSSTR AHLUNG.
McMaster University.
J. F.
AE
3.
T H E 2 H ( p , 2 p ) n R E A C T I O N A T 100 M e V .
J. E. C r a w f o r d , McGill University.
P . J . P a n and
AE
4.
P R O T O N R E A C T I O N S W I T H 3 H e A N D 4 H e A N D T H E TWO
N U C L E O N I N T E R A C T I O N . N. P . G o l d s t e i n a n d D. G. S t a i r s ,
McGill University.
AE
5.
P H O T O T R I T O N C R O S S S E C T I O N O F L i 6 . N. K. S h e r m a n , M c G i l l
U n i v e r s i t y , J . E . E . B a g l i n , Y a l e U n i v e r s i t y , a n d R . O. O w e n s ,
The University, Glasgow.
AE
6.
E L E C T R O N S C A T T E R I N G F R O M L i 6 . R . M. H u t c h e s o n , T .
D r a k e , V. S t o b i e , G. B e e r a n d H. S. C a p l a n , S a s k a t c h e w a n
Linear Accelerator Laboratory.
AE
7.
C L U S T E R M O D E L C A L C U L A T I O N S ON E L E C T R O N S C A T T E R I N G
BY 6 L i . M. A. K. L o d h i , T e x a s T e c h n o l o g i c a l C o l l e g e .
AE
8.
T H E ( p , t ) R E A C T I O N ON Li A N D
R . B. M o o r e , M c G i l l U n i v e r s i t y .
Li.
AE
9.
LOW-LYING 0 + L E V E L AND B e 8 .
University.
F r a n c i s J. B a r t i s ,
/
Y. S. H o r o w i t z a n d
Goodfellow,
E.
7
P. M. P o r t n e r and
Indiana
A E 10.
D E C A Y O F T H E 1 7 . 2 8 M e V L E V E L O F 9 B e . M. N. W i s e ,
H. B. K n o w l e s a n d S. M. B u n c h , W a s h i n g t o n S t a t e U n i v e r s i t y .
A E 11.
POLARIZATION O F NEUTRONS FROM THE Be9 ( d , n ) B 1 0
R E A C T I O N . T . G. M i l l e r , U . S . A r m y M i s s i l e C o m m a n d ,
R e d s t o n e A r s e n a l , A l a b a m a , a n d J . A. B i g g e r s t a f f , O a k R i d g e
National Laboratory.
- 14 -
A E 12.
1
'B(P, at) 8Be(a2) 4He
Lambert, Georgetown
A E 13.
DWBA ANALYSIS O F THE U B ( d , n ) 1 2 C REACTION.
a n d W. F . H u a n g , U n i v e r s i t y of K e n t u c k y .
A E 14.
F I T S TO A L P H A P A R T I C L E S C A T T E R I N G F R O M C 1 2 .
Carter, Trinity University.
WEDNESDAY,
REACTION.
University.
P . A. T r e a n o r a n d J.
J. E.
M.
Wiest
Elmer
B.
June 21, 9:00 a . m .
Session AF
A P P A R A T U S O F NUCLEAR PHYSICS
E . A. L i t h e r l a n d , C h a i r m a n
Ramsey
110
Wright
AF
1.
I N T E R N A L BEAM M E A S U R E M E N T S ON THE SREL 600-MeV
SYNCHROCYCLOTRON.
D a v i d I. H o p p , V i r g i n i a A s s o c i a t e d
R e s e a r c h Center, Space Radiation Effects Laboratory.
AF
2.
M E A S U R E M E N T S O F E X T R A C T I O N AND E X T E R N A L BEAM
P R O P E R T I E S O F T H E M . S. U . C Y C L O T R O N .
William P. Johnson,
M o r t o n M . G o r d o n a n d H e n r y G. B l o s s e r , M i c h i g a n S t a t e
University.
AF
3.
C Y C L O T R O N USABILITY FOR E L E C T R O N DWINDLING AND
FILLING MEASUREMENTS.
E r i c W . B e t h , S t a t e U n i v e r s i t y of
New York at Buffalo.
AF
4.
P R O G R E S S R E P O R T ON T H E A R G O N N E P O L A R I Z E D ION SOURCE.
D . C . H e s s , C . W . S c h m i d t , a n d D. v o n E h r e n s t e i n , A r g o n n e
National Laboratory.
AF
5.
R E C O M B I N A T I O N L O S S E S IN S E M I C O N D U C T O R D E T E C T O R S F O R
FISSION F R A G M E N T S .
R o b e r t C. A x t m a n n a n d A l a n H. K r u l i s c h ,
Princeton University.
AF
6.
SPARK CHAMBERS FOR PHOTOFISSION MEASUREMENTS.
W a r r e n F e n t o n S t u b b i n s a n d A l v i n S h a p i r o , U n i v e r s i t y of C i n c i n n a t i .
AF
7.
W I R E C H A M B E R S P E C T R O M E T E R F O R T H E S T U D Y O F (p, 2 P )
R E A C T I O N S N E A R 4 5 M e V . J . M c K e o w n , J . V. J o v a n o v i c h ,
T . M i l l a r , D. P e t e r s o n , K. G. S t a n d i n g a n d J . C. T h o m p s o n ,
U n i v e r s i t y of M a n i t o b a .
- 15 -
AF
8.
ANOMALOUS ENERGY LOSSES O F E N E R G E T I C PROTONS
(0. 7 5 - 1. 75 M e V ) IN C O P P E R M O N O C R Y S T A L S O F V A R I O U S
C R Y S T A L L O G R A P H I C ORIENTATIONS. M. Kaminsky,
Argonne National Laboratory.
AF
9.
HIGH R E S O L U T I O N S E M I C O N D U C T O R A L P H A P A R T I C L E
SPECTROMETER.
R . N. C h a n d a a n d R . A. D e a l , N a t i o n a l
R e a c t o r Testing Station.
A F 10.
OBTAINING GOOD TIME R E S O L U T I O N WITH L A R G E SCINTILL A T I O N D E T E C T O R S . D. A. G e d c k e a n d W. J . M c D o n a l d ,
U n i v e r s i t y of A l b e r t a .
A F 11.
A NEW S E C O N D - O R D E R D O U B L E - F O C U S I N G MASS S P E C T R O M E T E R . R o b e r t C. B a r b e r , J. O. M e r e d i t h , R. L. B i s h o p ,
M . E . K e t t n e r a n d H. E . D u c k w o r t h , U n i v e r s i t y of M a n i t o b a .
A F 12.
P E N E T R A T I O N O F P O S I T R O N S A N D E L E C T R O N S IN O R G A N I C
C O M P O U N D S . P . S. T a k h a r , R o y a l M i l i t a r y C o l l e g e .
WEDNESDAY,
J u n e 21, 9:00 a . m .
S e s s i o n AG
MOSTLY ATMOSPHERIC PHYSICS
A . E . S. G r e e n , C h a i r m a n
Ramsey
117
Wright
AG
1.
A N O M A L O U S OH L I N E - E M I S S I O N F R O M RADIO S O U R C E S .
V. A. H u g h e s , Q u e e n ' s U n i v e r s i t y .
AG
2.
SOME CHARACTERISTICS O F EARLY MORNING E L F RADIATION
A T 3 0 ° N , 8 6 ° W A S M E A S U R E D IN T H E S E A BY T E L L U R I C
SENSORS. E r n e s t A. Hogge, Ed P. P i t t m a n , U . S . Navy Mine
Defense Laboratory.
AG
3.
C A L C U L A T I O N O F T H E E N E R G Y P E R I O N - P A I R IN A T M O S P H E R I C
G A S E S . L . R . P e t e r s o n a n d A. E . S. G r e e n , U n i v e r s i t y of F l o r i d a .
AG
4.
O B S E R V A T I O N S O F T H E 1. 58 M I C R O N O X Y G E N AIR G L O W
E M I S S I O N . R . L . G a t t i n g e r , N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a .
AG
5.
S I M U L T A N E O U S O B S E R V A T I O N O F A U R O R A L I O N I Z A T I O N BY
T W O R A D A R S . D. R . M c D i a r m i d , N a t i o n a l R e s e a r c h C o u n c i l of
Canada.
- 16 -
AG
6.
S P E C I F I C PHOTOIONIZATION CROSS SECTIONS O F ATOMS
AND. M O L E C U L E S . J a m e s A . R . S a m s o n a n d R . B. C a i r n s ,
GCA Corporation.
AG
7.
T H E E M I S S I O N S P E C T R U M O F N H + A N D N D + . A. E .
a n d R . C o l i n , N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a .
AG
8.
S I N G L E A N D D O U B L E E L E C T R O N C A P T U R E BY 7. 7 T O 166
K e V 3 H e + + IONS'lN N
J . W a r r e n S t e a r n s , K l a u s H. B e r k n e r ,
V i n c e n t J . H o n e y a n d R o b e r t V. P y l e , L a w r e n c e R a d i a t i o n
Laboratory, Berkeley.
AG
9.
E N E R G Y S P E C T R U M O F SECONDARY E L E C T R O N S FOR AIR.
S. P . K h a r e , N A S A G o d d a r d S p a c e F l i g h t C e n t e r .
Douglas
AG 10.
D I S S O C I A T I O N O F M E T H A N E . W. O. D a v i e s ,
J . W. H e l b r o n , I I T R e s e a r c h I n s t i t u t e .
AG 11.
O N P A R T I C I P A T I O N O F E L E C T R O N I C A L L Y E X C I T E D I 2 IN
A T O M I C R E C O M B I N A T I O N R E A C T I O N . D. J . M o r r i s s , R . J .
L e R o y a n d G e o r g e B u r n s , U n i v e r s i t y of T o r o n t o .
AG 12.
A B S O R P T I O N BY T H E S C H U M A N N - R U N G E B A N D S O F O
M a r k W. P . C a n n , IIT R e s e a r c h I n s t i t u t e .
WEDNESDAY,
D. A. G a s t a n d
J u n e 21, 9:00 a . m .
S e s s i o n AH
O P T I C A L P R O P E R T I E S O F SOLIDS
(MOSTLY SEMICONDUCTORS)
B . N. B r o c k h o u s e , C h a i r m a n
McLennan
134
AH
1.
O P T I C A L P R O P E R T I E S O F S O M E I I I - V C O M P O U N D S IN T H E
V A C U U M U L T R A V I O L E T R E G I O N . S. S. V i s h n u b h a t l a a n d
J o h n C . W o o l l e y , U n i v e r s i t y of O t t a w a .
AH
2.
E L E C T R O R E F L E C T A N C E IN I n A s S b U x A L L O Y S . A l a n G.
T h o m p s o n a n d J o h n C. W o o l l e y , U n i v e r s i t y of O t t a w a .
AH
3.
P H O N O N A S S I S T E D M A G N E T O A B S O R P T I O N IN D I R E C T B A N D
S E M I C O N D U C T O R S . I. P . B a t r a a n d R . R . H a e r i n g . S i m o n
F r a s e r University.
- 17 -
AH
4.
E L E C T R O A B S O R P T I O N IN T H I N F I L M S O F Z n S e A N D Z n T e .
H. D. R i c c i u s a n d R . T u r n e r , N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a .
AH
5.
O P T I C A L P R O P E R T I E S O F S n T e A T R O O M T E M P E R A T U R E AS
A F U N C T I O N O F C A R R I E R C O N C E N T R A T I O N . R . B. S c h o o l a r
and J. R. Dixon, U . S . Naval O r d n a n c e L a b o r a t o r y .
AH
6.
T E M P E R A T U R E DEPENDENCE OF THE ABSORPTION EDGE OF
LOW C O N C E N T R A T I O N p - T Y P E SnTe. J. R i c h a r d B u r k e , J r .
a n d H. R . R i e d l , U. S. N a v a l O r d n a n c e L a b o r a t o r y .
AH
7.
E L E C T R I C S U S C E P T I B I L I T Y MASS AND O P T I C A L D I E L E C T R I C
CONSTANT O F SnTe. R. F . Bis, U . S . Naval O r d n a n c e L a b o r a t o r y
a n d t h e U n i v e r s i t y of M a r y l a n d a n d J . R . D i x o n , U. S. N a v a l
Ordnance Laboratory.
AH
8.
ON T H E A B S O R P T I O N E D G E O F T R I G O N A L S E L E N I U M .
G. G. R o b e r t s , S. T u t i h a s i a n d R . K e e z e r , X e r o x C o r p o r a t i o n .
AH
9.
O P T I C A L A B S O R P T I O N M E A S U R E M E N T S USING T H I N S A M P L E S .
J . L . F a w c e t t a n d P . C . E a s t m a n , U n i v e r s i t y of W a t e r l o o .
AH 10.
U S E O F THIN F I L M S IN S E L E C T I V E D E T E C T I O N Q F E X T R E M E
U L T R A V I O L E T R A D I A T I O N B E T W E E N 100 - 1 0 0 0 A . O. P . R u s t g i ,
Northrop Corporation.
A H 11.
M A G N E T I C C I R C U L A R D I C H R O I S M IN T H E R 2 B A N D S O F KC1
A N D K F . I . W. S h e p a r d , C o r n e l l U n i v e r s i t y .
A H 12.
INFRARED FLUORESCENCE OF M g A l 2 0 4 . XA1203 SPINELS.
H e r b e r t G. L i p s o n a n d A l f r e d K a h a n , A i r F o r c e C a m b r i d g e
Research Laboratories.
AH 13.
T H E O R Y AND D E V E L O P M E N T O F A F A S T , HIGH R E S P O N S I V I T Y
SINGLE CRYSTAL GERMANIUM FAR INFRARED D E T E C T O R .
S. Z w e r d l i n g , R . A. S m i t h , J . P . T h e r i a u l t a n d D. S. M u n d e l ,
P h y s i c s D e p a r t m e n t and C e n t e r f o r M a t e r i a l s Science and E n g i n e e r i n g , M. I. T .
- 18 -
W E D N E S D A Y , J u n e 21, 2:00 p . m .
S e s s i o n AI
NMR AND ESR
W. R . D a t a r s , C h a i r m a n
Lash Miller
161
AI
1.
ESR S P E C T R A O F N d 3 + , E r 3 + , Y b 3 + AND C d 3 + IN S I N G L E
C R Y S T A L S O F C e O ^ . W. L o w a n d S. M a n i v , H e b r e w U n i v e r s i t y
of J e r u s a l e m .
AI
2.
T H E E L E C T R O N S P I N R E S O N A N C E O F V O Z + IONS IN TWO
T Y P E S O F A L U M I N U M A L U M S . A. M a n o o g i a n , U n i v e r s i t y of
O t t a w a a n d J . A. M a c K i n n o n , M c G i l l U n i v e r s i t y .
AI
3.
PARAMAGNETIC RELAXATION OF Mn(Mg)S04. 4 H 2 0 .
R. D. T u r o f f , R . C o u l t e r , J. I r i s h , M. S u n d q u i s t a n d E .
Antioch College.
Buchner,
AI
4.
N U C L E A R Q U A D R U P O L E I N T E R A C T I O N S O F N a 2 3 AND B "
IN SODIUM B O R A T E G L A S S E S . C h u n g h i R h e e a n d P . J . B r a y ,
Brown University.
AI
5.
T H E E L E C T R I C F I E L D S H I F T S IN E P R F O R S M A L L IONS IN
L A R G E L A T T I C E S P A C E S . A. K i e l , W. B. M i m s a n d R. G i l l e n ,
Bell Telephone L a b o r a t o r i e s .
AI
6.
W H O L E BODY NMR S P E C T R O M E T E R . J a s p e r A. J a c k s o n a n d
W r i g h t H. L a n g h a m , L o s A l a m o s S c i e n t i f i c L a b o r a t o r y .
AI
7.
L I G H T I N D U C E D C H A N G E S IN T H E E P R S P E C T R U M O F
P H O T O C H R O M I C F e AND M o D O P E D S r T i O ^ B. W. F a u g h n a n
a n d Z. J . K i s s , R C A L a b o r a t o r i e s .
AI
8.
NMR E V I D E N C E F O R T H E E X I S T E N C E O F H 3 0 + IONS IN
H Y D R A T E D G A L L I U M S U L P H A T E . D. W. K y d o n , M. M.
a n d H. E . P e t c h , M c M a s t e r U n i v e r s i t y .
AI
9.
ELECTRON PARAMAGNETIC RESONANCE OF F e 3
( C , H j J ^ A s I n C l ^ . J . J . B o y l e a n d J e r a l d A. W e i s s ,
Polytechnic Institute.
+
Pintar
IN
Worcester
A I 10.
LOW LYING E N E R G Y L E V E L O F F e ( 2 + ) IN MgO. R . L. H a r t m a n ,
E . L . W i l k i n s o n a n d J . G. C a s t l e , J r . , R e d s t o n e A r s e n a l .
A I 11.
E F F E C T O F H E A V Y I M P U R I T Y R E S O N A N C E M O D E S ON E L E C T R O N
S P I N - L A T T I C E R E L A X A T I O N . M. B. W a l k e r , U n i v e r s i t y of T o r o n t o .
AI 12.
M A G N E T I C C O O L I N G P R O P E R T I E S O F C A L C I T E B E L O W 1°K.
Ying C h i e h H s u a n d J . L . G. L a m a r c h e , U n i v e r s i t y of O t t a w a .
- 19 -
A I 13.
A N G U L A R D E P E N D E N T R A M A N R E L A X A T I O N O F F e ( 3 + ) IN M g O .
J . S. B e n n e t t a n d R . L . H a r t m a n , R e d s t o n e A r s e n a l .
WEDNESDAY,
J u n e 21, 9:00 a . m .
Session AJ
M E D I C A L AND BIOLOGICAL PHYSICS I
R. J. Horsley, C h a i r m a n
Lash Miller
158
AJ
1.
CALIBRATION OF A DOPPLER SHIFT FLOW METER.
a n d J . A . Z a g z e b e s k i , U n i v e r s i t y of W i s c o n s i n M e d i c a l
AJ
2.
INSTRUMENT FOR ROUTINELY MEASURING THE EFFICIENCY O F
A FLUOROSCOPIC SCREEN.
P . B l o c k , U n i v e r s i t y of P e n n s y l v a n i a .
AJ
3.
A R A P I D DIGITAL D E P T H DOSE R E C O R D E R .
L. T. F i t z g e r a l d ,
M. M a u d e r l i and F . B r u n o , J. Hillis M i l l e r H e a l t h C e n t e r ,
Gainesville, Florida.
AJ
4.
C E N T R A L AXIS D E P T H D O S E S F O R A C O N S T A N T S O U R C E - T U M O R
D I S T A N C E . J . E . S a u n d e r s , R . H. P r i c e a n d R. J . H o r s l e y , T h e
O n t a r i o C a n c e r T r e a t m e n t and R e s e a r c h Foundation, Hamilton, Ontario.
AJ
5.
A T T E N U A T I O N M E A S U R E M E N T S O F 6 MV X - R A Y S . C. J .
a n d T a t i a n a C a p o n e , S t a n f o r d U n i v e r s i t y S c h o o l of M e d i c i n e .
AJ
6.
S U I T A B I L I T Y O F Li(7) T L D D O S I M E T E R S F O R M A I L E D I N T E R COMPARISONS. Ralph Worsnop, E l e a n o r S i r a f i n e j a d and Ann
G r o s s m a n , S a n F r a n c i s c o M e d i c a l C e n t e r , U n i v e r s i t y of C a l i f o r n i a .
AJ
7.
A S U R V E Y O F 36 M E G A V O L T A G E A C C E L E R A T O R S .
C. L e s c r e m i e r .
A. S o r e n s e n , W. G. G u n n , M a r q u e t t e U n i v e r s i t y S c h o o l of M e d i c i n e .
AJ
8.
AN A N A L Y S I S O F E R R O R S I N T R O D U C E D BY T H E F I N I T E D I M E N S I O N S
O F IONIZATION C H A M B E R S AND RADIATION SOURCES.
W a l t e r M a u d e r l i , L . T . F i t z g e r a l d , G. E . G r o s s , J . H i l l i s M i l l e r
Health Center, Gainesville, Florida.
AJ
9.
G A M M A R A Y A B S O R B E D D O S E BY M O N T E C A R L O M E T H O D .
A. R . R e d d y , K. M . M . S. A y y a n g a r a n d G. L . B r o w n e l l ,
Massachusetts General Hospital.
A J 10.
C. A. K e l s e y
Center.
Karzmark
A R A P I D E V A L U A T I O N O F CRITICALITY N E U T R O N DOSE
M E A S U R E M E N T BY A C T I V A T I O N T E C H N I Q U E . P . N. M a h e s w a r i ,
Laval University.
- 20 -
WEDNESDAY,
J u n e 21, 2 : 0 0 p . m .
S e s s i o n BA
S Y M P O S I U M O F T H E DIVISION O F
E L E C T R O N AND A T O M I C P H Y S I C S ;
L A S E R S II
B. P . S t o i c h e f f , C h a i r m a n
Old M c L e n n a n
135
BA
1.
TWO L A S E R E X P E R I M E N T S - S E L E C T I V E P H O T O C A T A L Y S I S
A N D SIDE WISE S T I M U L A T E D E M I S S I O N . A. L. S c h a w l o w ,
S t a n f o r d U n i v e r s i t y . (30 m i n . )
BA
2.
I N T E R A C T I O N O F LASER BEAMS WITH PLASMAS.
S. A. R a m s d e n , N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a .
(30 m i n . )
BA
3.
A P P L I C A T I O N S O F LASERS TO ATOMIC S P E C T R O S C O P Y .
B. C h a b b a l a n d J . B r o c h a r d , C e n t r e N a t i o n a l de l a R e c h e r c h e
S c i e n t i f i q u e . (30 m i n . )
BA
4.
GAS L A S E R A C T I V I T I E S A T M . I. T .
A. J a v a n , M. I. T.
(30 m i n . )
W E D N E S D A Y , J u n e 21, 2:00 p . m .
Session BB
I N V I T E D P A P E R S ON P A R T I C L E
P H Y S I C S (B)
J . W. M o f f a t , C h a i r m a n
McLennan
103
BB
1.
VALIDITY O F QUANTUM ELECTRODYNAMICS AT SMALL
D I S T A N C E S . S. C . C. T i n g , C o l u m b i a U n i v e r s i t y . (30 m i n . )
BB
2.
S Y M M E T R I E S AND DYNAMICS.
U n i v e r s i t y . (30 m i n . )
BB
3.
HIGH E N E R G Y S C A T T E R I N G A N D A S Y M P T O T I C P R E D I C T I O N S .
S. J . L i n d e n b a u m , B r o o k h a v e n N a t i o n a l L a b o r a t o r y . (30 m i n . )
BB
4.
T H E A L G E B R A O F HIGH E N E R G Y C U R R E N T S .
T e l A v i v U n i v e r s i t y . (30 m i n . )
R. B l a n k e n b e c l e r ,
Y.
Princeton
Ne'eman,
- 21 -
W E D N E S D A Y , J u n e 21, 2:00 p . m .
Session BC
PLASMA PHYSICS - E X P E R I M E N T A L
J . A. P h i l l i p s , C h a i r m a n
McLennan
202
BC
1.
PLASMA PROPULSION FOR D E E P SPACE F L I G H T .
R . G. J a h n , E . G u g g e n h e i m L a b o r a t o r y , J a m e s F o r r e s t a l
C a m p u s , P r i n c e t o n . (30 m i n . )
BC
2.
MODIFICATION O F F L U T E INSTABILITY THROUGH LINETYING. H e r m a n P o s t m a , Oak Ridge National L a b o r a t o r y .
(30 m i n . )
BC
3.
PARAMETRIC EXCITATION OF COLLECTIVE OSCILLATIONS
IN P L A S M A . R . A. S t e r n , B e l l T e l e p h o n e L a b o r a t o r i e s . (30 m i n . )
BC
4.
E M I S S I O N P R O C E S S E S IN P L A S M A S .
(30 m i n . )
WEDNESDAY,
G e o r g e B e k e f i , M. I. T.
J u n e 21, 2:00 p . m .
S e s s i o n BD
F L U I D DYNAMICS;
SHOCK W A V E S A N D G E N E R A L
I. I. G l a s s , C h a i r m a n
McLennan
203
BD
1.
I N V E S T I G A T I O N O F SHOCK W A V E S IN H 2 P R O D U C E D IN AN
E L E C T R O M A G N E T I C SHOCK T U B E WITH P H I L I P P O V ' S
P I N C H AS A D R I V E R . A. B e l o z e r o v a n d A. R o d r i g o , U n i v e r s i t y
of T o r o n t o .
BD
2.
S H O C K C O M P R E S S I O N AND T H E I N T E R A T O M I C P O T E N T I A L
O F ARGON. B e r n i J. A l d e r , L a w r e n c e Radiation L a b o r a t o r y .
BD
3.
C O N D E N S A T I O N O F A V A P O R ON A SHOCK T U B E W A L L
- - C A R B O N T E T R A C H L O R I D E . W. R. S m i t h a n d F . A. H a j d u k ,
Lehigh University.
BD
4.
D I S T O R T I O N O F A SHOCK WAVE T R A V E R S E D BY A V O R T E X .
L. T . F i l o t a s , U n i v e r s i t y of T o r o n t o , I n s t i t u t e f o r A e r o s p a c e
Studies.
- 22 -
BD
5.
A NOVEL PRESSURE BAR.
Lehigh University.
BD
6.
SOLUTION O F THE NON-LINEAR BOLTZMANN EQUATION FOR
A SHOCK WAVE. B r u c e L. Hicks and H a r g a r e t A. S m i t h ,
U n i v e r s i t y of I l l i n o i s .
BD
7.
THE OBSERVED MOTION O F A S P H E R E THROUGH A SHORT,
ROTATING CYLINDER O F FLUID. T. Maxworthy, Jet Propulsion
Laboratory.
BD
8.
AN E X A C T SOLUTION F O R T H E F L O W O F A S T R A T I F I E D F L U I D .
O . K. J o n e s , N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a .
BD
9.
ON T H E H I E R A R C H I E S D E S C R I B I N G T H E E Q U I L I B R I U M S T A T E
•
D. W. B a u m a n d W. R .
Smith,
/
O F A F L U I D . L . S. G a r c i a - C o l i n a n d E . B r a u n , R e a c t o r .
Centro
N u c l e a r de M e x i c o . C o m i s i o n N a c i o n a l de E n e r g i a N u c l e a r .
Mexico.
B D 10.
T H E R M O D Y N A M I C B E H A V I O R IN T H E V I C I N I T Y O F T H E GASL I Q U I D C R I T I C A L P O I N T . J . M . H. L e v e l t S e n g e r s , N a t i o n a l
B u r e a u of S t a n d a r d s .
B D 11.
L I G H T S C A T T E R I N G BY " S E C O N D S O U N D " IN M O N A T O M I C
G A S E S . R . H. E n n s , S i m o n F r a s e r U n i v e r s i t y .
WEDNESDAY,
J u n e 21, 2:00 p . m .
Session BE
PLASMA PHYSICS ;
S P A C E AND G E N E R A L T H E O R E T I C A L
N . A. K r a l l , C h a i r m a n
Lash Miller
159
BE
1.
PLASMADYNAMICS AT THE H Y P E R B O L I C N E U T R A L LINE.
A. B r a t e n a h l a n d C . Y e a t e s , J e t P r o p u l s i o n L a b o r a t o r y , C a l i f o r n i a I n s t i t u t e of T e c h n o l o g y .
BE
2.
T W I L I G H T AIR G L O W P R O G R A M A T T H E U N I V E R S I T Y O F
V I C T O R I A . H. M . S u l l i v a n , U n i v e r s i t y of V i c t o r i a .
- 23 -
BE
3.
T H E S O L A R E L E C T R O S T A T I C P O T E N T I A L . E . I. W h i t t e d ,
U S A F I n s t i t u t e of T e c h n o l o g y a n d M . A. L e v i n e , U S A F C a m b r i d g e
Research Laboratories.
BE
4.
C O U P L E D ION A N D E L E C T R O N P L A S M A S H O C K W A V E S O F
H Y P E R S O N I C F L I G H T IN A P L A S M A E N V I R O N M E N T W I T H
P A R T I C U L A R R E F E R E N C E TO THE A L O U E T T E S A T E L L I T E .
H i r o s h i K i k u c h i , I n s t i t u t e f o r A e r o s p a c e S t u d i e s , U n i v e r s i t y of
Toronto.
BE
5.
S T E A D Y N O N - L I N E A R F L O W S IN A C O L L I S I O N L E S S P L A S M A .
L e s t e r K r a u s , D r e x e l I n s t i t u t e of T e c h n o l o g y .
BE
6.
SINGULARITIES OF THE TWO-FLUID PLASMA EQUATIONS
AND THEIR R E L A T I O N TO BOUNDARY CONDITIONS. E. Levi
a n d H. W. F r i e d m a n , P o l y t e c h n i c I n s t i t u t e of B r o o k l y n .
BE
7.
MAGNETICALLY INDUCED NON-EQUILIBRIUM E L E C T R O N
T E M P E R A T U R E S . H e r b e r t B. R o s e n s t o c k , N a v a l R e s e a r c h
Laboratory.
BE
8.
Abstract withdrawn.
BE
9.
M H D S E C O N D A R Y F L O W IN C U R V E D C O N D U I T S . V. S a h a i ,
T e n n e s s e e T e c h n o l o g i c a l U n i v e r s i t y , a n d T . S. C h a n g , N o r t h
Carolina State University.
B E 10.
ON T H E S T A B I L I T Y O F P L A S M A S H E A T H S . K. S c h i n d l e r ,
E u r o p e a n Space R e s e a r c h Institute, F r a s c a t i (Rome), Italy.
B E 11.
NONLINEAR ASYMPTOTIC ANALYSIS O F THE POSITIVE
C O L U M N . H. W. F r i e d m a n , P o l y t e c h n i c I n s t i t u t e of B r o o k l y n .
B E 12.
THE R O L E O F THE PARTIALLY IONIZED TRANSITION LAYER
IN G A S - B O U N D E D P L A S M A S . C . E . N i e l s e n , O a k R i d g e
National L a b o r a t o r y and The Ohio State U n i v e r s i t y .
B E 13.
TEMPERATE
DERIVATION.
PLASMA
P O L A R I Z A T I O N - AN E L E M E N T A R Y
T . W. J o h n s t o n , T e x a s A & M U n i v e r s i t y .
- 24 -
W E D N E S D A Y , J u n e 21, 2:00 p . m .
Session BF
NEUTRON PHYSICS
L. Katz, C h a i r m a n
R a m s e y Wright
110
BF
1.
SEARCH FOR A NEUTRON E L E C T R I C DIPOLE MOMENT.
W i l l i a m D r e s s , P . D. M i l l e r , J . K. B a i r d , O a k R i d g e N a t i o n a l
L a b o r a t o r y a n d N. F . R a m s e y , H a r v a r d U n i v e r s i t y .
BF
2.
NEUTRON RESONANCE DATA FOR THE E r ISOTOPES A = l 6 4 ,
166, 167, 168, 170. H. I. L i o u , S. W y n c h a n k , W. W. H a v e n s , J r . ,
J . R a i n w a t e r a n d H. C e u l e m a n s , C o l u m b i a U n i v e r s i t y .
BF
3.
N E U T R O N R E S O N A N C E D A T A F O R T H E Yb I S O T O P E S A= 171,
172, 173, 174, 176. H. C e u l e m a n s , H. I. L i o u , S. W y n c h a n k ,
J . R a i n w a t e r a n d W. W. H a v e n s , J r . , C o l u m b i a U n i v e r s i t y .
BF
4.
T H E T O T A L N E U T R O N CROSS S E C T I O N O F H O L M I U M B E L O W
235 e V . T h o m a s E . S t e p h e n s o n a n d A l b e r t o M. F e r r e r ,
Brookhaven National Laboratory.
BF
5.
N E U T R O N R E S O N A N C E S T R U C T U R E IN E r 1 6 4 A N D P A R A M A G N E T I C S C A T T E R I N G O F E r 1 6 8 . S. F . M u g h a b g h a b , R.
C h r i e n a n d M. R . B h a t , B r o o k h a v e n N a t i o n a l L a b o r a t o r y .
E.
BF
6.
CALCULATIONS OF THE INFLUENCE OF NUCLEAR DEFORMATION
ON T H E N E U T R O N S T R E N G T H F U N C T I O N S O F HEAVY E V E N - E V E N
R O T O R N U C L I D E S . G. G i g a s , A t o m i c s I n t e r n a t i o n a l .
BF
7.
THE VARIATION O F P H O T O N E U T R O N ANISOTROPY WITH
B R E M S S T R A H L U N G E N E R G Y F O R C r A N D P b . K. G. M c N e i l l ,
J . S. H e w i t t a n d J . W. J u r y , U n i v e r s i t y of T o r o n t o .
BF
8.
TITANIUM PHOTOPROTON YIELDS.
M c N e i l l , U n i v e r s i t y of T o r o n t o .
BF
9.
F A S T NEUTRONS F R O M THE PHOTODISINTEGRATION O F SOME
d - S H E L L N U C L E I . S. H. Ku, J . A. R a w l i n s , C. G l a v i n a ,
L . K. T e r V e l d a n d Y. M. Shin, U n i v e r s i t y of S a s k a t c h e w a n .
B F 10.
F A S T NEUTRONS F R O M THE PHOTODISINTEGRATION O F SOME
p - S H E L L N U C L E I . C. G l a v i n a , J . A. R a w l i n s , S. H. Ku,
L . K. T e r V e l d a n d Y. M. Shin, U n i v e r s i t y of S a s k a t c h e w a n .
H. L. P a i a n d K. G.
- 25 -
B F 11.
N E U T R O N S P E C T R A F R O M B e ( a , n) S O U R C E S .
N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a .
B F 12.
M E A S U R E M E N T S O F N E U T R O N I N T E N S I T Y F O R A N (n, y) T I M E O F - F L I G H T F A C I L I T Y . M . W a l s h , L . H a a c k e a n d D. A. L . P a u l ,
U n i v e r s i t y of T o r o n t o .
B F 13.
FAST NEUTRON SPECTROMETER.
K. N. G e l l e r , D r e x e l I n s t i t u t e
of T e c h n o l o g y , D. E c c e l s h a l l , U n i v e r s i t y of P e n n s y l v a n i a , a n d
T. T. B a r d i n , H a v e r f o r d College.
B F 14.
A M U L T I P L E ANGLE DETECTOR SYSTEM FOR NEUTRON
E L A S T I C S C A T T E R I N G AND P O L A R I Z A T I O N M E A S U R E M E N T S .
S. A. C o x , A r g o n n e N a t i o n a l L a b o r a t o r y .
WEDNESDAY,
L. Van d e r
Zwan,
J u n e 21, 2:00 p . m .
S e s s i o n BG
ATOMIC AND M O L E C U L A R
SPECTROSCOPY
L . S. G o o d m a n , C h a i r m a n
Ramsey
117
BG
1.
BOUND S T A T E S O F H 2 A r , H 2 K r AND H 2 X e C O M P L E X E S F R O M
THE P R E S S U R E - I N D U C E D F U N D A M E N T A L ABSORPTION BAND
O F H ^ . A . K u d i a n a n d H. L . W e l s h , U n i v e r s i t y of T o r o n t o .
BG
2.
P O L A R I Z A T I O N O F L I G H T F R O M H 2 E X C I T E D BY E L E C T R O N
I M P A C T . P. T. Cahill and R. S c h w a r t z , C o l u m b i a R a d i a t i o n
Laboratory.
BG
3.
Z E E M A N E F F E C T IN M O L E C U L A R O X Y G E N . G i l b e r t O.
and Louis W i j n b e r g , C o r n e l l A e r o n a u t i c a l L a b o r a t o r y .
BG
4.
C O H E R E N T D E T E C T I O N O F A NEW T Y P E O F O P T I C A L DOUBLE
Q U A N T U M T R A N S I T I O N . B. S. M a t h u r a n d W. H a p p e r ,
Columbia Radiation Laboratory.
BG
5.
ION B O M B A R D M E N T L E V E L - C R O S S I N G S P E C T R O S C O P Y .
R . D. K a u l , N A S A - L e w i s R e s e a r c h C e n t e r .
BG
6.
g j V A L U E S IN E X C I T E D S T A T E S O F T H E Y T T E R B I U M A T O M .
B. B u d i c k and J. S n i r , T h e H e b r e w U n i v e r s i t y .
Brink
Wright
- 26 -
BG
7.
H Y P E R F I N E S T R U C T U R E IN T H E G R O U N D C O N F I G U R A T I O N
O F B I S M U T H . F . M . K e l l y a n d L . O. D i c k i e , U n i v e r s i t y of
Otago.
BG
8.
ATOMIC BEAM-MAGNETIC RESONANCE MEASUREMENTS OF
R h 1 0 3 . Y. W. C h a n a n d L . S. G o o d m a n , A r g o n n e N a t i o n a l
Laboratory.
BG
9.
PRECISION M E A S U R E M E N T O F MUONIC X-RAY ENERGIES.
J . D. M c A n d r e w , R . D. B a r t o n a n d C . K. H a r g r o v e , N a t i o n a l
R e s e a r c h C o u n c i l of C a n a d a ; E . P . H i n c k s , N a t i o n a l R e s e a r c h
C o u n c i l of C a n a d a a n d C a r l e t o n U n i v e r s i t y ; H. L . A n d e r s o n ,
M . S. D i x i t , H. J . E v a n s , D. K e s s l e r a n d R . J . M c K e e , U n i v e r s i t y
of C h i c a g o .
BG 10.
^ i - A T O M I C T i X - R A Y I N T E N S I T I E S . C . K. H a r g r o v e , R . D.
B a r t o n a n d J . D. M c A n d r e w , N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a ;
E . P . H i n c k s , N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a a n d C a r l e t o n
U n i v e r s i t y ; H. L . A n d e r s o n , M . S. D i x i t , H. J . E v a n s , D. K e s s l e r
a n d R . J . M c K e e , U n i v e r s i t y of C h i c a g o .
WEDNESDAY,
J u n e 21, 2:00 p . m .
S e s s i o n BH
MOSSBAUER E F F E C T AND O P T I C A L
S P E C T R A IONS AND SOLIDS
W. B . D a n i e l s , C h a i r m a n
McLennan
134
BH
1.
STABILIZED CONSTANT A C C E L E R A T I O N MOSSBAUER
Y. H a z o n y , P r i n c e t o n U n i v e r s i t y .
BH
2.
COMPARISON O F MOSSBAUER AND THERMODYNAMIC MEASUREM E N T S O F T H E D E B Y E T E M P E R A T U R E O F F e C l j . D. E . E a r l s ,
Y. H a z o n y , R . C . A x t m a n n , P r i n c e t o n U n i v e r s i t y .
BH
3.
M O S S B A U E R S P E C T R A O F F E R R O U S C O M P O U N D S AS A F U N C T I O N
O F H Y D R A T I O N N U M B E R . J . W. H u r l e y , J r . , R . C . A x t m a n n
a n d Y. H a z o n y , P r i n c e t o n U n i v e r s i t y .
BH
4.
„
y ij>
O B S E R V A T I O N O F T H E M O S S B A U E R E F F E C T IN U
J . R. O l e s o n , J o h n s Hopkins U n i v e r s i t y .
DRIVE.
- 27 -
BH
5.
M O S S B A U E R E F F E C T O F F e 5 7 IN U L T R A F I N E P A R T I C L E S A N D
B U L K N i O . W. K u n d i g , K. J . A n d o , U n i v e r s i t y of C a l i f o r n i a a n d
G. C o n s t a b a r i s a n d R . H. L i n d q u i s t , C h e v r o n R e s e a r c h C o .
BH
6.
R O T A T I O N A L Z E E M A N STUDY O F C H A R G E - C O M P E N S A T E D
CaF2:Dy3+.
C . W. R e c t o r , U . S . N a v a l A c a d e m y a n d J o h n s
Hopkins University.
BH
7.
FAR I N F R A R E D S P E C T R A O F I R O N - D O P E D MgO.
A. L. S c h a w l o w , S t a n f o r d U n i v e r s i t y .
BH
8.
O P T I C A L S P E C T R A O F V 3 + - V 3 + A N D V 3 + - C r 3 + P A I R S IN
Al^Oy
D. S a r i d , W. L o w , H e b r e w U n i v e r s i t y of J e r u s a l e m .
BH
9.
F L U O R E S C E N C E L I F E T I M E S , RADIATIVE PROBABILITIES AND
QUANTUM E F F I C I E N C I E S FOR E X C I T E D STATES O F P r 3 + AND
Tm^,
M. J. W e b e r , Raytheon R e s e a r c h Division.
J . Y.
Wong,
B H 10.
T E M P E R A T U R E D E P E N D E N C E O F THE WIDTHS AND POSITIONS
O F S E V E R A L P A I R L I N E S IN H E A V I L Y D O P E D R U B Y . B. B i r a n g
and B. D i B a r t o l o , M i t h r a s Inc.
B H 11.
E V I D E N C E O F P H O N O N A N N I H I L A T I O N P R O C E S S E S IN T H E
E X C I T E D S T A T E S O F B a C l F : S m . A. S. M. M a h b u b ' u l A l a m ,
B. D i B a r t o l o , M i t h r a s I n c .
WEDNESDAY,
J u n e 21, 2:00 p . m .
S e s s i o n BI
SEMICONDUCTORS
T. M. Rice, C h a i r m a n
Lash Miller
161
BI
1.
I N T E R P R E T A T I O N O F GaAs SCHOTTKY BARRIER CAPACIT A N C E S . R. R. S e n e c h a l and J. B a s i n s k i , N o r t h e r n E l e c t r i c
Company.
BI
2.
P H O T O L U M I N E S C E N C E E F F I C I E N C Y AND P H O T O C O N D U C T I V I T Y
IN C A D M I U M S U L F I D E . D. W. N y b e r g a n d K o n r a d C o l b o w , S i m o n
F r a s e r University.
BI
3.
S I G N I F I C A N C E O F S E M I C O N D U C T O R R E L A X A T I O N T I M E S IN
P R E D I C T I N G HIGH F R E Q U E N C Y E L E C T R I C A L C H A R A C T E R I S T I C S
O F PHN JUNCTIONS. M. F . A x l e r , W e s t i n g h o u s e E l e c t r i c C o r p .
- 28 -
B1
4.
RECOMBINATION RADIATION F R O M F R E E AND BOUND
E X C I T O N S IN G a A s . M . A . G i l l e o , D. E . H i l l a n d F . V.
Williams, Monsanto Company.
BI
5.
I N T E R P R E T A T I O N O F P H O T O D I E L E C T R I C E F F E C T S IN
SEMICONDUCTORS AT LOW T E M P E R A T U R E .
W. H. H a r t w i g
a n d J . S. S t o n e , T h e U n i v e r s i t y of T e x a s .
BI
6.
E L E C T R O N M O B I L I T Y O F T H E <100>
Dale E. Hill, Monsanto Company.
BI
7.
P I E Z O - E L E C T R O R E F L E C T A N C E O F THE D I R E C T BAND E D G E
O F G E R M A N I U M : Q l c D S T R E S S . F r e d H. P o l l a k , M a n u e l
C a r d o n a a n d A r t h u r P . S m i t h III, B r o w n U n i v e r s i t y .
BI
8.
P H O T O T H E R M O E L E C T R I C E F F E C T IN C d S * .
a n d R . L o m n e s , U n i v e r s i t y of A l b e r t a .
BI
9.
CALCULATIONS O F THE NUMBER AND ENERGY DISTRIBUTION
O F E L E C T R O N S IN C U R R E N T - C A R R Y I N G InSb U N D E R C A R R I E R
M U L T I P L I C A T I O N CONDITIONS. P a u l E. P e t e r s e n and T r u m a n
O. Woodruff, M i c h i g a n State U n i v e r s i t y .
MINIMA O F GaAs,,
P .
( 1 - x) x
F.
L.
Weichman
B I 10.
SOME E L E C T R I C A L P R O P E R T I E S O F I n A s x S b j _ x ALLOYS.
W m . M . C o d e r r e a n d J o h n C . W o o l l e y , U n i v e r s i t y of O t t a w a .
Bill.
MAGNETORESISTANCE O F HEAVILY D O P E D InAs.
a n d J o h n C . W o o l l e y , U n i v e r s i t y of O t t a w a .
B I 12.
T H E E X C I T A T I O N S P E C T R U M O F SINGLY I O N I Z E D ZINC
I M P U R I T Y IN G E R M A N I U M W I T H A N D W I T H O U T U N I A X I A L
COMPRESSION. F. B a r r a and P. F i s h e r , Purdue University.
B I 13.
M I C R O W A V E EMISSION F R O M n- T Y P E INDIUM A N T I M O N I D E
A T 4 . 2 ° K A N D 7 7 ° K . G. B e k e f i , A. B e r s a n d S. R . J . B r u e c k ,
M . I . T.
B I 14.
T R A N S V E R S E E L E C T R O R E F L E C T A N C E IN H I G H R E S I S T I V I T Y
S E M I C O N D U C T O R S . R i c h a r d A . F o r m a n , N a t i o n a l B u r e a u of
S t a n d a r d s and B r o w n U n i v e r s i t y , David E. A s p n e s and Manuel
Cardons, Brown University.
C. C. Y.
Kwan
- 29 -
WEDNESDAY,
J u n e 21, 2:00 p . m .
Session BJ
M E D I C A L AND B I O L O G I C A L
P H Y S I C S II
G. H o l t , C h a i r m a n
Lash Miller
158
BJ
1.
P U L S E R A D I O LYSIS S T U D I E S O F N U C L E I C A C I D D E R I V A T I V E S .
C . L . G r e e n s t o c k a n d J . W. H u n t , P h y s i c s D i v i s i o n , O n t a r i o
Cancer Institute.
BJ
2.
PARTIAL PURIFICATION OF HEMOPOIETIC STEM CELLS.
R . G. W o r t o n , E . A. M c C u l l o c h , L . S i m i n o v i t c h a n d J. E . T i l l ,
Physics Division, Ontario Cancer Institute.
BJ
3.
STUDY O F T H E I N F L E X I O N IN R A D I A T I O N S U R V I V A L C U R V E S
FOR P A R T I A L SYNCHRONIZED C E L L POPULATIONS.
R . J . H o r s l e y a n d C. M. P u j a r a , T h e O n t a r i o C a n c e r T r e a t m e n t
and R e s e a r c h F o u n d a t i o n .
BJ
4.
E F F E C T S O F X - I R R A D I A T I O N ON P R E - AND P O S T - M E T A M O R P H I C
A M P H I B I A N S . T . A l g a r t , H. M. M c C u r d y a n d G. F r i e d m a n n ,
U n i v e r s i t y of V i c t o r i a .
BJ
5.
T H E E F F E C T O F R A D I A T I O N A N D A L K Y L A T I N G A G E N T S ON
T H E P O S T - T R E A T M E N T GROWTH O F INDIVIDUAL C E L L S .
G. F r o e s e , M a n i t o b a C a n c e r T r e a t m e n t a n d R e s e a r c h F o u n d a t i o n .
BJ
6.
V A R I A T I O N IN X- R A D I A T I O N R E S P O N S E DURING T H E DIVISION
C Y C L E O F M O U S E L - C E L L S . C. M. P u j a r a a n d G. F . W h i t m o r e ,
T h e O n t a r i o C a n c e r I n s t i t u t e a n d D e p a r t m e n t of M e d i c a l
B i o p h y s i c s , U n i v e r s i t y of T o r o n t o .
BJ
7.
P R O T E C T I V E E F F E C T O F DMSO V A P O R A G A I N S T L E T H A L D O S E S
O F X - I R R A D I A T I O N . H. L e - V a n a n d W. S. M o o s , D e p a r t m e n t of
R a d i o l o g y , U n i v e r s i t y C o l l e g e of M e d i c i n e .
BJ
8.
C O M P U T E R A V E R A G I N G O F L I G H T E V O K E D P O T E N T I A L S IN
D E T E C T I O N O F A B E R R A N T C E R E B R A L E X C I T A B I L I T Y IN M A N .
B. B a b l o u z i a n , P . W. N e u r a t h a n d C. W. W a t s o n , T u f t s - N e w
England Medical Center.
WEDNESDAY,
J u n e 21, 5:30 p. m .
R E C E P T I O N BY T H E U N I V E R S I T Y O F T O R O N T O .
The Quadrangle
University College
- 30 -
WEDNESDAY,
S e s s i o n CA
J u n e 21, 2:00 p . m .
S Y M P O S I U M O F T H E DIVISION O F
E L E C T R O N AND ATOMIC PHYSICS
E X P E R I M E N T A L T E S T S O F T AND
C I N V A R I A N C E AT LOW E N E R G I E S
E. Lipworth, Chairman
McLennan
102
CA
1.
T H E O R E T I C A L CONSIDERATIONS CONCERNING C AND T
S Y M M E T R Y . L. W o l f e n s t e i n , C a r n e g i e I n s t i t u t e of T e c h n o l o g y .
(30 m i n . )
CA
2.
T H E S E A R C H F O R AN E L E C T R I C D I P O L E M O M E N T IN F R E E
ATOMS AT BRANDEIS AND O X F O R D UNIVERSITIES.
P . G. H. S a n d a r s , O x f o r d U n i v e r s i t y . (30 m i n . )
CA
3.
P R E C I S E T E S T O F T I M E R E V E R S A L I N V A R I A N C E IN A L L O W E D
B E T A D E C A Y . E . D. C o m m i n s , U n i v e r s i t y of C a l i f o r n i a , B e r k e l e y .
(30 m i n . )
CA
4.
S E A R C H F O R C N O N C O N S E R V A T I O N IN E L E C T R O N P O S I T R O N
A N N I H I L A T I O N . S. B e r k o , B r a n d e i s U n i v e r s i t y . (30 m i n . )
T H U R S D A Y , J u n e 22, 9 : 0 0 a . m .
Session CB
I N V I T E D P A P E R S ON N U C L E A R
P H Y S I C S (A)
R. E. Bell, C h a i r m a n
McLennan
103
CB
1.
HIGH R E S O L U T I O N S T U D I E S O F G A M M A R A Y S F R O M N U C L E A R
R E A C T I O N S . E . A. L i t h e r l a n d , U n i v e r s i t y of T o r o n t o . (30 m i n . )
CB
2.
DIRECT REACTIONS AT TANDEM ENERGIES.
O a k R i d g e N a t i o n a l L a b o r a t o r y . (30 m i n . )
CB
3.
T O P I C S ON T H E O R T H O G O N A L G R O U P .
d e M e x i c o . (30 m i n . )
CB
4.
D E F O R M A T I O N IN L I G H T N U C L E I .
U n i v e r s i t y . (30 m i n . )
F . G. J .
E. Chacon,
A. B. V o l k o v ,
Perey,
Universidad
McMaster
T H U R S D A Y , J u n e 22, 9:00 a . m .
S e s s i o n CC
PLASMA PHYSICS - T H E O R E T I C A L
H. P o s t m a , C h a i r m a n
CC
1.
C O L L I S I O N A L E F F E C T S IN P L A S M A ; I N T E R P R E T A T I O N LD R I F T WAVE E X P E R I M E N T S . Bruno Coppi, P r i n c e t o n
U n i v e r s i t y . (30 m i n . )
CC
2.
A P P L I C A T I O N O F T U R B U L E N C E THEORY TO S P A C E AND
L A B O R A T O R Y P L A S M A S . N i c h o l a s A. K r a l l , C e n e r a l D y n a m i c s
C o r p o r a t i o n . (30 m i n . )
CC
3.
F L U I D GYRO M E C H A N I C S . W i l l i a m A. N e w c o m b ,
R a d i a t i o n L a b o r a t o r y . (30 m i n . )
CC
4.
T R A N S V E R S E A N D L O N G I T U D I N A L W A V E S IN C O L L I S I O N L E S S
P L A S M A S . J o e l M. L e v i n , GE S p a c e S c i e n c e s L a b o r a t o r y .
(30 m i n . )
Lawrence
T H U R S D A Y , J u n e 22, 9 : 0 0 a . m .
Session CD
RAMAN S C A T T E R I N G AND O P T I C A L
E F F E C T S IN S O L I D S
McLennan
203
CD
1.
BRACG S C A T T E R I N G O F LIGHT AND INVERSION O F THE
H E L I C O Ï D A L S T R U C T U R E O F C H O L E S T E R I C LIQUID CRYSTALS.
G. D u r a n d , H a r v a r d U n i v e r s i t y .
CD
2.
SECOND HARMONIC GENERATION O F LIGHT F R O M CRYSTAL
IN L I Q U I D C R Y S T A L . C. H. L e e , G. D u r a n d , H a r v a r d U n i v e r s i t y .
CD
3.
R E L A T I V E I N T E N S I T I E S O F T H E V I B R A T I O N A L L I N E S IN T H E
R A M A N S P E C T R A O F S O L I D AND L I Q U I D H Y D R O G E N A N D
D E U T E R I U M . E . J . A l l i n , U n i v e r s i t y of T o r o n t o , A. H. M c K a g u e
Rosevear, York University.
CD
4.
T H E O R Y O F T H E A N O M A L O U S R A M A N I N T E N S I T I E S IN S O L I D
H 2 AND D^. H. M. J a m e s , P u r d u e U n i v e r s i t y , J . V a n K r a n e n d o n k ,
U n i v e r s i t y of T o r o n t o .
CD
5.
M O D E S T R U C T U R E IN A R E S O N A N T R A M A N O S C I L L A T O R .
P . E . T a n n e n w a l d , M. I. T.
- 32 -
CD
6.
R A M A N E F F E C T IN S M A L L C R Y S T A L S .
H. B. R o s e n s t o c k , N a v a l R e s e a r c h L a b .
CD
7.
I N D U C E D F I R S T O R D E R R A M A N E F F E C T IN C U B I C P E R O V S K I T E S .
J. M. W o r l o c k , P . A. F l e u r y , Bell T e l e p h o n e L a b o r a t o r i e s .
CD
8.
N O N L I N E A R E F F E C T S IN S E M I C O N D U C T O R S .
V. V. P a r a n j a p e , U n i v e r s i t y of M a n i t o b a .
CD
9.
I N T E R B A N D P I E Z O - O P T I C A L A B S O R P T I O N IN T H E I N D I R E C T
E D G E S O F A g B r A T 1 2 ° K . + . G. A s c a r e l l i , P u r d u e U n i v e r s i t y .
C D 10.
M.
Haas,
H. C .
Law,
A N O M A L I E S IN R E S T S T R A H L B A N D S D U E T O S U R F A C E R O U C H N E S S .
D. W. B e r r e m a n , B e l l T e l e p h o n e L a b o r a t o r i e s .
T H U R S D A Y , J u n e 22, 9 : 0 0 a . m .
Session CE
N U C L E A R R E A C T I O N S II
W. P . A l f o r d , C h a i r m a n
Lash Miller
159
CE
1.
T H E R A D I A T I V E D E C A Y O F T W O R E S O N A N C E S IN T H E
N 1 4 ( a , y ) F 1 8 R E A C T I O N . A . M. C h a r l e s w o r t h a n d R . E . A z u m a ,
U n i v e r s i t y of T o r o n t o a n d K. C a s s e l a n d J . A. K u e h n e r ,
McMaster University
CE
2.
T H E 1 9 F ( p , d ) 1 8 F A N D 1 9 F ( p , t ) 1 7 F R E A C T I O N S A T 30. 3 M e V .
Roger Dittman, California State College at F u l l e r t o n , R o b e r t Cole,
C h a r l e s W a d d e l l , U n i v e r s i t y of S o u t h e r n C a l i f o r n i a , a n d
H a r b h a j a n S. S a n d h u , C a l i f o r n i a S t a t e C o l l e g e a t N o r t h r i d g e .
CE
3.
DWBA ANALYSIS O F THE F 1 9 ( p , a) O 1 6 REACTION.
a n d B r i a n H i r d , U n i v e r s i t y of M a n i t o b a .
CE
4.
E X C I T E D S T A T E S O F 2 3 N e . G. D u m a z e t , H. B e a u m e v i e i l l e ,
M. L a m b e r t , C. M e y n a d i e r , Institut d ' E t u d e s N u c l é a i r e s d ' A l g e r ;
and Nguyen Van S e n , L a b o r a t o i r e de P h y s i q u e N u c l é a i r e ,
Université de Grenoble.
CE
5.
S T U D Y O F T H E N a 2 3 ( n , y) N a 2 4 R E A C T I O N .
National R e a c t o r Testing Station.
CE
6.
R E A C T I O N S T U D I E S ON M g 2 4 . N. K. G a n g u l y , R u t h e r f o r d H i g h
E n e r g y L a b o r a t o r y a n d A . A. R u s h , E . J . B u r g e a n d D. A. S m i t h ,
King's College.
R . C.
T . Y.
Li
Creenwood,
- 33 -
CE
7.
J - D E P E N D E N C E F O R T H E (p, d) R E A C T I O N IN T H E 2 s - I d S H E L L .
R. L. K o z u b and E . K a s h y , M i c h i g a n S t a t e U n i v e r s i t y .
CE
8.
E L E C T R O N S C A T T E R I N G F R O M Mg, Ti AND V AT 1 80°.
W a r r e n L . B e n d e l , L a w r e n c e W. F a g g , R a l p h A . T o b i n , H. F .
K a i s e r , E d w a r d C. J o n e s , J r . and S t e p h e n M. S h a f r o t h , U . S .
Naval R e s e a r c h Laboratory.
CE
9.
( p , a ) ANGULAR DISTRIBUTION M E A S U R E M E N T S NEAR 40 MeV.
C . J . K o s t , R . M . G r a i g a n d B r i a n H i r d , U n i v e r s i t y of M a n i t o b a .
C E 10.
THE 2 8 S i ( d , d ) 2 8 S i , 28Si(d, p ) 2 9 S i , AND 28Si(d, n ) 2 9 p REACTIONS.
D. P . G u r d , G. R o y a n d H. G. L e i g h t o n , U n i v e r s i t y of A l b e r t a .
C E 11.
EXCITATION FUNCTION OF THE REACTION
I. F . B u b b , U n i v e r s i t y of M e l b o u r n e .
C E 12.
p31(p,n)S31.
io
-î
->7
S T U D Y O F T H E Si
(d, He )A1
R E A C T I O N . H. E .
K. H. P u r s e r , J . J . S c h w a r t z , W. P . A l f o r d a n d D.
U n i v e r s i t y of R o c h e s t e r .
Cove,
Cline,
C E 13.
P R O P E R T I E S O F T H E 9. 7 0 - M e V L E V E L IN S I L I C O N - 2 8 .
L . E . C a r l s o n , K. P . J a c k s o n a n d R. E . A z u m a , U n i v e r s i t y of
Toronto.
C E 14.
E N E R G Y L E V E L S O F S i 3 0 . N. C . P u t t a s w a m y , D. S. C e m m e l l ,
L . M e y e r - S c h u t z m e i s t e r , a n d H. O h n u m a , A r g o n n e N a t i o n a l
Laboratory.
THURSDAY,
J u n e 22, 9:00 a . m .
Session CF
CF
1.
CF
2.
CF
3.
NUCLEAR THEORY
E. Vogt, C h a i r m a n
Ramsey
110
E F F E C T O F T H R E E - B O D Y F O R C E IN T R I T O N .
a n d Y. N o g a m i , M c M a s t e r U n i v e r s i t y .
3
ON T H E C O U L O M B E N E R G Y O F He .
Dalhousie University.
B. A.
S. H. Ng a n d D.
Loiseau
Kiang,
S E M I - I N F I N I T E M A T T E R AND THE NUCLEON S U R F A C E .
K. A. A m o s a n d F . T a b a k i n , U n i v e r s i t y of P i t t s b u r g h .
Wright
- 34 -
CF
4.
BINDING E N E R G Y C A L C U L A T I O N S F O R F I N I T E N U C L E I .
B . N i c k e l , U n i v e r s i t y of S a s k a t c h e w a n , R . E . P e i e r l s , O x f o r d
U n i v e r s i t y and E. L. T o m u s i a k , S a s k a t c h e w a n L i n e a r A c c e l e r a t o r
Laboratory.
CF
5.
M U O N C A P T U R E E X C I T A T I O N O F T H E G I A N T R E S O N A N C E IN
B 1 2 USING A C O U P L E D D I P O L E - Q U A D R U P O L E M O D E L .
Francis
J . K e l l y , U. S. N a v a l O r d n a n c e L a b o r a t o r y a n d H. U b e r a l l , T h e
C a t h o l i c U n i v e r s i t y of A m e r i c a .
CF
6.
O N T H E E F F E C T I V E N U C L E A R I N T E R A C T I O N S IN C 1 4 .
a n d R a j K. G u p t a , U n i v e r s i t y of T o r o n t o .
CF
7.
C O M P A R I S O N O F E X P E R I M E N T A L R E S U L T S WITH P A R T I C L E
HOLE PREDICTIONS FOR INELASTIC E L E C T R O N SCATTERINC
F R O M G I A N T R E S O N A N C E S T A T E S IN L I G H T N U C L E I . T . E . D r a k e ,
E . L . T o m u s i a k a n d H. S. C a p l a n , S a s k a t c h e w a n L i n e a r A c c e l e r a t o r
Laboratory.
CF
8.
ON T H E S P E C T R O S C O P Y O F P S E U D O - N U C L E I .
a n d L . E . H. T r a i n o r , U n i v e r s i t y of T o r o n t o .
CF
9.
N I L S S O N M O D E L W I T H B A N D M I X I N G A N D E N E R C Y L E V E L S IN
27
A 1 . P . C . Sood a n d N. E . D a v i s o n , U n i v e r s i t y of A l b e r t a .
C F 10.
E V A L U A T I O N O F RATIOS O F ISOMERIC CROSS SECTIONS FOR
(n, y) R E A C T I O N S . J . W. M a n d l e r a n d D. S p e r b e r , I I T R e s e a r c h
Institute.
C F 11.
F R E E R E A C T I O N M A T R I C E S AS T H E R E S I D U A L I N T E R A C T I O N S
IN S H E L L M O D E L C A L C U L A T I O N S .
P . H - C L e e , S. K a h a n a ,
K. S c o t t , M c G i l l U n i v e r s i t y .
C F 12.
STRUCTURE CALCULATIONS FOR D E F O R M E D ODD-ODD NUCLEI.
C . T . H e s s a n d R . D. K o s h e l , O h i o U n i v e r s i t y .
C F 13.
THE E F F E C T O F GROUND AND E X C I T E D S T A T E NUCLEAR
D E F O R M A T I O N S ON D I P O L E T R A N S I T I O N R A T E S IN C L O S E D
S H E L L N U C L E I . G e o r g e E . W a l k e r , U n i v e r s i t y of C a l i f o r n i a ,
Los Alamos Scientific Laboratory.
C F 14.
N U C L E A R MATRIX E L E M E N T S FOR FORBIDDEN B E T A DECAY
O F S P H E R O I D A L S H A P E D NUCLEI. Tuong Nguyen-Due, U n i v e r s i t y
of M a n i t o b a a n d H a r r y D u l a n e y a n d H. R. B r e w e r , G e o r g i a I n s t i t u t e
of P h y s i c s .
R a j K.
H. Ing
Gupta
- 35 -
C F 15.
E S C A P E W I D T H O F T H E G I A N T - D I P O L E S T A T E IN A H E A V Y
N U C L E U S . L . R . P e t e r s o n , M . I. T .
THURSDAY,
J u n e 22, 9:00 a . m .
S e s s i o n CG
LASERS I
L. Mandel,
Ramsey
117
Chairman
J . R. S i n g e r ,
Wright
CG
1.
T U N A B L E ION L A S E R S .
U n i v e r s i t y of C a l i f o r n i a .
CG
2.
A C C E L E R A T I O N O F E L E C T R O N S BY L A S E R
V. D a n e u , M . 1. T .
CG
3.
SOME DESIGN CONSIDERATIONS FOR A S U P E R C O N D U C T O R
L A S E R . L . L e o p o l d a n d W. D. G r e g o r y , G e o r g e t o w n U n i v e r s i t y .
CG
4.
P H O T O E L E C T R I C CORRELATION M E A S U R E M E N T S O F A LASER
NEAR THE T H R E S H O L D O F OSCILLATION. F . Davidson and
L . M a n d e l , U n i v e r s i t y of R o c h e s t e r .
CG
5.
M E A S U R E M E N T O F THE E F F E C T I V E INDEX O F R E F R A C T I O N
IN A R O T A T I N G S Y S T E M USING A C L O S E D - P A T H L A S E R .
J . A. L i t t l e a n d C . V. H e e r , O h i o S t a t e U n i v e r s i t y .
CG
6.
FREQUENCY SHIFTS O F THE FINE STRUCTURE OSCILLATIONS
O F T H E 8 4 4 6 Â A T O M I C O X Y G E N L A S E R . M . S. F e l d , B. J .
F e l d m a n a n d A . J a v a n , M . I. T .
CG
7.
N E W I N F R A R E D L A S E R T R A N S I T I O N S A N D g - V A L U E S IN A T O M I C
O X Y G E N . G. W. F l y n n , M . S. F e l d a n d B . J . F e l d m a n , M. I. T .
CG
8.
C H E M I C A L E Q U I L I B R I A IN T H E C O 2 L A S E R . J . A. M a c k e n ,
E , M a t o v i c h a n d R . A. B r a n d e w i e , A u t o n e t i c s D i v i s i o n of N o r t h
A m e r i c a n Aviation.
CG
9.
P R O P E R T I E S O F A CARBON DIOXIDE LASER DISCHARCE.
A. I. C a r s w e l l a n d J . I. W o o d , R C A V i c t o r R e s e a r c h L a b o r a t o r i e s .
RADIATION.
CG 10.
S I D E L I G H T E M I S S I O N P R O P E R T I E S O F CC>2 L A S E R P L A S M A S .
R . A. C r a n e a n d A. L . W a k s b e r g , R C A V i c t o r R e s e a r c h L a b o r a t o r i e s .
CG 11.
THEORY OF THE PULSED MOLECULAR NITROGEN LASER.
A. W. A l l , C a t h o l i c U n i v e r s i t y of A m e r i c a , A. C. K o l b a n d A. D.
Anderson, P l a s m a Physics Division, Naval R e s e a r c h L a b o r a t o r i e s .
-
36-
T H U R S D A Y , J u n e 22, 9 : 0 0 a . m .
S e s s i o n CH
COLOR CENTERS, D E F E C T S ,
CRYSTAL STRUCTURE
A. D. B. W o o d s , C h a i r m a n
McLennan
134
CH
1.
O P T I C A L S T U D I E S O F P H O T O C H R O M I C P R O C E S S E S IN IRON
D O P E D S r T i O ^ . Z. J . K i s s a n d B. W. F a u g h n a n , R C A L a b o r a t o r i e s .
CH
2.
P H O T O C H R O M I C C E N T E R S IN R A R E E A R T H D O P E D C a F £ .
S t a e b l e r and Z. J. K i s s , R C A L a b o r a t o r i e s .
CH
3.
EMISSION S P E C T R A O F T H E R M O L U M I N E S C E N T GLOW PEAKS
IN R A R E E A R T H D O P E D C a F ^ M. S c h l e s i n g e r a n d P . W. W h i p p e y ,
U n i v e r s i t y of W e s t e r n O n t a r i o .
CH
4.
AN E X P E R I M E N T A L I N V E S T I G A T I O N O F T H E A D D I T I V E C O L O R A TION P R O C E S S IN L I T H I U M F L U O R I D E . J . C. W a t s o n and
I. C o o k e , U n i v e r s i t y of M a n i t o b a .
CH
5.
L U M I N E S C E N C E F R O M OH" C E N T E R S IN R b C l .
U n i v e r s i t y of I l l i n o i s .
CH
6.
O P T I C A L A N D T H E R M A L E N E R G Y L E V E L S O F D E F E C T S IN
IONIC S O L I D S ; A P P L I C A T I O N T O T H E F - C E N T E R . J . H. S i m p s o n ,
N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a .
CH
7.
I N F R A - R E D A B S O R P T I O N BY U - C E N T R E S IN A L K A L I H A L I D E S
NEAR THE (FORBIDDEN) T W O - P H O N O N LINE. T. Gethins and
E. J. Woll, J r . , M c M a s t e r U n i v e r s i t y .
CH
8.
T H E R M A L C O N D U C T I V I T Y O F y - I R R A D I A T E D KC1 B E L O W 1°K.
R . A. G u e n t h e r a n d H. W e i n s t o c k , I l l i n o i s I n s t i t u t e of T e c h n o l o g y .
CH
9.
T H E R M A L ANNEALING O F E L E C T R O N AND P R O T O N RADIATION
D A M A G E IN S I L I C O N SOLAR C E L L S . B r u c e J . F a r a d a y , R i c h a r d
L . S t a t l e r , a n d R e g i n a V. T a u k e , U . S . N a v a l R e s e a r c h L a b o r a t o r y .
I.
D.
L.
Cooke,
C H 10.
D I S L O C A T I O N M O B I L I T I E S IN C R Y S T A L S .
University.
J . R. V a i s n y s ,
Yale
C H 11.
T H E S P A C E G R O U P AND S T R U C T U R E O F TRICLINIC POTASSIUM
DICHROMATE, K ^ C r ^ .
J . K. B r a n d o n a n d I. D. B r o w n ,
McMaster University.
- 37 -
C H 12.
X - R A Y A N A L Y S I S O F I N T E R - J U N C T I O N S T R A I N IN N - D I F F U S E D
S I L I C O N . E . D. J u n g b l u t h a n d H. C h i a o , G e n e r a l T e l e p h o n e a n d
E l e c t r o n i c s L a b o r a t o r i e s , Inc.
C H 13.
MEASUREMENTS OF LATTICE CONSTANT, THERMAL EXPANSION,
AND I S O T H E R M A L COMPRESSIBILITY O F NEON SINGLE CRYSTALS.
D. N. B a t c h e l d e r , D. L . L o s e e , a n d R . O. S i m m o n s , U n i v e r s i t y
of I l l i n o i s .
THURSDAY,
J u n e 22, 9:00 a . m .
Session CI
SOLID STATE THEORY
R. R. H a e r i n g , C h a i r m a n
Lash Miller
161
CI
1.
A B S O R P T I V I T Y IN T H E F A R I N F R A R E D IN S I M P L E
H. S c h e r , B e l l T e l e p h o n e L a b o r a t o r i e s .
METALS.
CI
2.
T R A N S P O R T T H E O R Y O F H E A V Y C H A R G E D P A R T I C L E S IN
SOLIDS: A G R E E N ' S FUNCTION A P P R O A C H .
Dong- Yun K i m ,
U n i v e r s i t y of S a s k a t c h e w a n .
CI
3.
O P T I C A L C O N S T A N T S O F a - S n : T H E k. p. M E T H O D .
Manuel
C a r d o n a , F r e d H. P o l l a k a n d C . W. H i g g i n b o t h a m , B r o w n U n i v e r s i t y .
CI
4.
I N T E R A C T I O N O F ACOUSTIC WAVES WITH P O L A R I Z A T I O N
W A V E S IN F E R R O E L E C T R I C S .
V. D v o r a k , U n i v e r s i t y of W a t e r l o o .
CI
5.
G R O U P T H E O R E T I C A L CLASSIFICATION O F SPIN WAVE ENERCY
S P E C T R A IN M A G N E T I C M A T E R I A L S . S. H. C h e n , U n i v e r s i t y of
Waterloo.
CI
6.
P H O N O N - P H O N O N S C A T T E R I N G IN S O L I D H E L I U M .
A c k e r m a n and R. A. G u y e r , Duke U n i v e r s i t y .
CI
7.
Q U A S I - P A R T I C L E L I F E T I M E AND T H E S P E C I F I C H E A T O F H e 3 .
J . W. K a n e , D. J . A m i t a n d H. W a g n e r , L a b o r a t o r y of A t o m i c a n d
Solid State P h y s i c s , C o r n e l l U n i v e r s i t y .
CI
8.
T H E O R E T I C A L A S P E C T S O F SURFACE MOSSBAUER STUDIES.
R o n a l d J . B r o w n a n d J . M. V a i l , U n i v e r s i t y of M a n i t o b a .
CI
9.
DENSE GAS F O R M U L A T I O N O F MASS T R A N S P O R T P R O P E R T I E S
O F LIQUID M E T A L S .
P. A s c a r e l l i and A r t h u r P a s k i n , B r o o k h a v e n
National Laboratory.
C.
C.
- 38 -
C I 10.
ANALYTICITY AND T H E KONDO E F F E C T .
of T o r o n t o .
C I 11.
ELECTRONIC STATES O F GENERAL MIXED CRYSTALS.
S. G. D a v i s o n , U n i v e r s i t y of W a t e r l o o a n d J . K o u t e c k y , C z e c h o s l o v a k
A c a d e m i c of S c i e n c e s .
C I 12.
N E U T R O N S C A T T E R I N G F R O M A M O N O A T O M I C L I Q U I D ON A
" T U N N E L - D I F F U S I O N " • M O D E L . A . M o r a l e s - A m a d o , R e /a c t o r .
C e n t r o N u c l e a r . C o m i s i o n Nacional de E n e r g i a N u c l e a r Mexico.
C I 13.
A PHENOMENOLOGICAL A P P R O A C H FOR E L E C T R E T S .
U n i v e r s i d a d C e n t r a l de Venezuela.
THURSDAY,
M. F o w l e r ,
University
J e r y Gintel,
J u n e 22, 9:00 a . m .
Session CJ
M E D I C A L A N D B I O L O G I C A L P H Y S I C S III
W. M a u d e r l i , C h a i r m a n
Lash Miller
158
CJ
1.
MEDICAL RADIATION PHYSICS AT THE INTERNATIONAL
A T O M I C E N E R G Y A G E N C Y . P . M . P f a l z n e r a n d S. M a l o - A l v a r e z ,
International Atomic Energy Agency.
CJ
2.
AN I M A G E I N T E N S I F I E R S C I N T I L L A T I O N C A M E R A .
M . D. A n d e r s o n H o s p i t a l .
CJ
3.
MEASUREMENT O F REGIONAL VENTILATION TO PERFUSION
R A T I O S W I T H X E N O N 135 A N D A S C I N T I L L A T I O N C A M E R A .
S. M . H i c k l i n g , P . R . S w y e r a n d N. A s p i n , U n i v e r s i t y of T o r o n t o .
CJ
4.
P R O B L E M S ASSOCIATED WITH CLINICAL STUDIES O F REGIONAL
C E R E B R A L B L O O D F L O W AS D E T E R M I N E D W I T H X E N O N 133.
R. Mathieu and R. M a l t a i s , Hôpital N o t r e - D a m e .
CJ
5.
THE MEASUREMENT OF INTESTINAL ABSORPTION OF COPPER
USING k ^ C u . N _ M a r c e a u , A. S a s s - K o r t s a k a n d N. A s p i n , U n i v e r s i t y
of T o r o n t o .
CJ
6.
A C A R D D I S P L A Y M E T H O D O F M A I N T A I N I N G AN E F F E C T I V E
I N V E N T O R Y O F " A L L E E S E T V E N U E S " O F R A D I U M S O U R C E S IN
A BUSY R A D I O T H E R A P Y D E P A R T M E N T . R . M a t h i e u a n d
C. F a r i b e a u l t , Hôpital N o t r e - D a m e .
P. M.
Corry,
- 39 -
CJ
7.
E X P O S U R E TO NURSING S T A F F CARING F O R RADIUM P A T I E N T S .
R . H. P r i c e , J . E . S a u n d e r s a n d R . J . H o r s l e y , T h e O n t a r i o
C a n c e r T r e a t m e n t and R e s e a r c h F o u n d a t i o n .
CJ
8.
T H E PHYSICS O F M A C R O S C O P I C SYSTEMS WITH N O N - U N I Q U E
FUTURES.
D. D a v i e s , D o l l a r d D e s O r m e a u x .
THURSDAY,
J u n e 22, 9 : 0 0 a . m .
S e s s i o n CK
EARTH PHYSICS I
J. A. J a c o b s , C h a i r m a n
Lash Miller
162
CK
1.
T H E C O N T I N E N T A L MARGIN O F E A S T E R N CANADA: NOVA
S C O T I A T O N A R E S S T R A I T S . D. L . B a r r e t t , G. N. E w i n g ,
B . D. L o n c a r e v i c a n d K. S. M a n c h e s t e r , B e d f o r d I n s t i t u t e of
O c e a n o g r a p h y a n d M . J . K e e n , I n s t i t u t e of O c e a n o g r a p h y , D a l h o u s i e
University.
CK
2.
GEOPHYSICAL STUDIES O F THE C O N T I N E N T A L MARGIN
NORTHEAST OF NEWFOUNDLAND.
Bruce Fenwick, Dalhousie
University.
CK
3.
M I D - A T L A N T I C R I D G E N E A R 4 5 ° N O R T H . B . D.
B e d f o r d I n s t i t u t e of O c e a n o g r a p h y , D a r t m o u t h .
CK
4.
D E E P SEA NAVIGATION WITH V L F RADIO TRANSMISSIONS.
R . O. K u e h n e l , D a l h o u s i e U n i v e r s i t y a n d B. D. L o n c a r e v i c ,
B e d f o r d I n s t i t u t e of O c e a n o g r a p h y , D a r t m o u t h , N. S.
CK
5.
T H E AGE O F THE STEENS MOUNTAIN GEOMAGNETIC POLARITY
T R A N S I T I O N . A. B a k s i , D. Y o r k , U n i v e r s i t y of T o r o n t o a n d
N. D. W a t k i n s , F l o r i d a S t a t e U n i v e r s i t y .
CK
6.
PALEOMAGNETISM O F LOWER PALAEOZOIC ROCKS FROM
NEWFOUNDLAND.
P . S. R a o a n d E . R . D e u t s c h , M e m o r i a l
U n i v e r s i t y of N e w f o u n d l a n d .
CK
7.
PALEOMAGNETISM OF UPPER PALAEOZOIC FORMATIONS OF
T H E M A R I T I M E S . J. L. Roy, Dominion O b s e r v a t o r y , Ottawa
CK
8.
A S I M P L E M E T H O D FOR BUILDING ASTATIC AND PARASTATIC
MAGNETOMETERS.
J . P . H o d y c h , U n i v e r s i t y of T o r o n t o .
Loncarevic,
- 40 -
CK
9.
I N V I T E D P A P E R : P R O G R E S S IN D I S C O V E R Y O F T H E R E C E N T
BEHAVIOR O F T H E CRUST AND U P P E R M A N T L E . J. T. Wilson,
U n i v e r s i t y of T o r o n t o .
T H U R S D A Y , J u n e 22, 2:00 p . m .
S e s s i o n DA
S Y M P O S I U M ON T H E O R E T I C A L
SOLID STATE PHYSICS
P. R. Wallace, C h a i r m a n
McLennan
102
DA
1.
THE EXCITONIC INSULATOR.
L a b o r a t o r i e s . (30 m i n . )
T. M. R i c e , Bell T e l e p h o n e
DA
2.
T H E O R Y O F P U R E T Y P E II S U P E R C O N D U C T O R S IN H I G H
F I E L D R E G I O N S . K. M a k i , U n i v e r s i t y of C a l i f o r n i a , S a n D i e g o .
(30 m i n . )
DA
3.
T H E O R Y O F S P I N - L A T T I C E R E L A X A T I O N IN A N H A R M O N I C
C R Y S T A L S . J . V a n K r a n e n d o n k , U n i v e r s i t y of T o r o n t o . (30 m i n . )
DA
4.
P H O N O N A M P L I F I C A T I O N IN S O L I D S .
F r a s e r U n i v e r s i t y . (30 m i n . )
R. R. H a e r i n g ,
Simon
T H U R S D A Y , J u n e 22, 2:00 p . m .
S e s s i o n DB
I N V I T E D P A P E R S ON N U C L E A R
P H Y S I C S (B)
K. G. M c N e i l l , C h a i r m a n
McLennan
103
DB
1.
HIGHER ISOSPIN S T A T E S O F T H E LIGHT NUCLEI.
C a l i f o r n i a I n s t i t u t e of T e c h n o l o g y . (30 m i n . )
C . A.
Barnes,
DB
2.
T H E P R O B L E M O F I S O B A R I C M I X I N G IN I S O B A R I C A N A L O G U E
R E S O N A N C E S . P . A. Mello, Institute f o r A d v a n c e d Study.
(30 m i n . )
DB
3.
GAMMA-RAY S P E C T R A F R O M T H E R M A L AND RESONANCE
N E U T R O N C A P T U R E . J . A. H a r v e y , O a k R i d g e N a t i o n a l
L a b o r a t o r y . (30 m i n . )
- 41 -
DB
4.
FAST NEUTRON POLARIZATION MEASUREMENTS.
U n i v e r s i t y of A l b e r t a . ( 3 0 m i n . )
THURSDAY,
J. T.
Sample,
J u n e 22, 2:00 p . m .
S e s s i o n DC
DIVISION O F F L U I D D Y N A M I C S I
INVITED P A P E R S
R. J. E m r i c h
McLennan
202
DC
1.
OUR P R E S E N T K N O W L E D G E O F T U R B U L E N T BOUNDARY
LAYER.
L . S. G. K o v a s z n a y , J o h n s H o p k i n s U n i v e r s i t y .
DC
2.
T H E F L U I D DYNAMICS A S P E C T S O F HIGH S P E E D GUNS AND
H I G H V E L O C I T Y I M P A C T . A. C . C h a r t e r s , F l i g h t P h y s i c s L a b . ,
G. M . D e f e n s e R e s e a r c h L a b s .
DC
3.
ACOUSTIC ENERGY FLUX FROM SHOCK-TURBULENCE
A C T I O N . H. S. R i b n e r , U n i v e r s i t y of T o r o n t o .
DC
4.
T H E A P P L I C A T I O N O F I M P L O S I O N WAVE DYNAMICS TO A
H Y P E R V E L O C I T Y L A U N C H E R . R . F . F l a g g a n d I. I. G l a s s ,
U n i v e r s i t y of T o r o n t o .
DC
5.
L A M I N A R F L O W B E T W E E N T W O I N F I N I T E DISKS, O N E
R O T A T I N G AND T H E O T H E R STATIONARY. E. R e s h o t k o and
R . L, R o s e n t h a l , C a s e I n s t i t u t e of T e c h n o l o g y .
DC
6.
SIMILAR SOLUTIONS O F T H R E E - D I M E N S I O N A L I N C O M P R E S S I B L E
LAMINAR BOUNDARY LAYERS WITH SUCTION AND INJECTION.
Y. Y. C h a n , N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a .
DC
7.
T H E M E A S U R E M E N T O F D I F F U S I V I T Y IN F U L L Y D E V E L O P E D
P I P E F L O W . J . H. T . W a d e a n d J . K. K o o , M c M a s t e r U n i v e r s i t y .
DC
8.
U N S T E A D Y D I S P L A C E M E N T O F B O U N D A R Y L A Y E R ON O S C I L L A T I N G C O N E S A N D W E D G E S IN H Y P E R S O N I C F L O W .
K. J . O r l i k - R u c k e m a n n , N a t i o n a l A e r o n a u t i c a l E s t a b l i s h m e n t , O t t a w a .
DC
9.
LARGE EDDY S T R U C T U R E O F T U R B U L E N T SHEAR FLOWS.
F . R. P a y n e , P e n n s y l v a n i a State U n i v e r s i t y .
INTER-
- 42 -
WEDNESDAY,
S e s s i o n DD
J u n e 21, 2:00 p . m .
PLASMA PHYSICS ;
EXPERIMENTAL I - THERMONUCLEAR
AND R E L A T E D T O P I C S
D. J . R o s e , C h a i r m a n
McLennan
203
DD
1.
C O N F I N E M E N T O F I N J E C T E D P L A S M A IN T H E E T U D E
S T E L L A R A T O R . R o b e r t A. E l l i s , J r . a n d H a r o l d P . E u b a n k ,
Princeton University.
DD
2.
PLASMA I N J E C T E D INTO A L E V I T A T E D TOROIDAL QUADRUPOLE.
M . R o b e r t s , I. A l e x e f f , W. H a l c h i n a n d D. F . H o w e l l , O a k R i d g e
National Laboratory.
DD
3.
O B S E R V A T I O N S O F T H E I N J E C T I O N , C O N F I N E M E N T AND
C O M P R E S S I O N O F E L E C T R O N C L O U D S IN A T O R O I D A L M A C H I N E .
J . D. D a u g h e r t y , G. S. J a n e s a n d R . H. L e v y , A v c o E v e r e t t
Research Laboratory.
DD
4.
A T O R O I D A L HIGH p D E V I C E F O R P L A S M A C O N T A I N M E N T .
M . A. L e v i n e , L . S. C o m b e s and C. C. G a l l a g h e r , A i r F o r c e
Cambridge Research Laboratories.
DD
5.
P L A S M A GUN I N J E C T I O N IN T H E L E V I T R O N . O s c a r A. A n d e r s o n ,
C h a r l e s W. H a r t m a n a n d D a l e H. B i r d s a l l , L a w r e n c e R a d i a t i o n
Laboratory.
DD
6.
M I C R O - I N S T A B I L I T Y IN T H E D C X - 2 ION B E A M . J . F . C l a r k e ,
J. F. Lyon and R. F . S t r a t t o n , Oak Ridge National L a b o r a t o r y .
DD
7.
P R O D U C T I O N O F D - D R E A C T I O N S BY B E A M - P L A S M A I N T E R A C T I O N IN T H E S T E A D Y S T A T E . R o d g e r V. N e i d i g h , I g o r A l e x e f f
and Wm. Denver Jones, Oak Ridge National L a b o r a t o r y .
DD
8.
NON A D I A B A T I C R . F . T R A P P I N G O F E L E C T R O N S IN M I R R O R
F I E L D S . A. J . L i c h t e n b e r g and M. J . S c h w a r t z , U n i v e r s i t y of
C a l i f o r n i a a n d D. T . T u m a , A e r o j e t G e n e r a l N u c l e o n i c s .
DD
9.
E X P E R I M E N T A L STUDIES O F RESONANT DIFFUSION.
and L. M. L i d s k y , M. I. T .
DD 10.
R. W. M o i r
M E A S U R E M E N T O F A N O M A L O U S P A R T I C L E LOSS DUE TO
C O L L I S I O N A L D R I F T WAVES. T . K. C h u , H. W. H e n d e l and
P . A. P o l i t z e r , P r i n c e t o n U n i v e r s i t y .
- 43 -
D D 11.
COOPERATIVE LIGHT SCATTERING FROM THETA- P I NCH
PLASMAS. M a r k D a e h l e r and R. L. Ribe, Los A l a m o s Scientific
Laboratory.
DD 12.
LIGHT BURSTS F R O M HOT E L E C T R O N P L A S M A . William L.
a n d W a l t o n A. P e r k i n s , L a w r e n c e R a d i a t i o n L a b o r a t o r y .
D D 13.
ANISTROPIC F R E E - F R E E
X-RAY BREMSSTRAHLUNG
P R O D U C T I O N IN AN E L E C T R O N C Y C L O T R O N R E S O N A N C E
P L A S M A . J . L . S h o h e t a n d S. J . G i t o m e r , T h e U n i v e r s i t y of
Wisconsin.
THURSDAY,
Barr
J u n e 22, 2:00 p . m .
S e s s i o n DE
N U C L E A R R E A C T I O N S III
P . M. L o r r a i n , C h a i r m a n
Lash Miller
159
L O W - L Y I N G L E V E L S O F 3 5 C 1 . D. D. D u n c a n , K. H.
R . L . P l a c e a n d B. D. K e r n , U n i v e r s i t y of K e n t u c k y .
DE
1.
Buerger,
DE
2.
DE
3.
DE
4.
DE
5.
DE
6.
REACTIONS
C a ( d , n)
Sc,
Ca(d,n)
Sc a n d
Ca(d,n) 7Sc.
T . B . G r a n d y , W. K. D a w s o n , W. J . M c D o n a l d a n d G. C. N e i l s o n ,
U n i v e r s i t y of A l b e r t a .
DE
7.
GAMMA-GAMMA DIRECTIONAL CORRELATION MEASUREMENTS
O N T H E 3 3 0 - 4 5 0 k e V C A S C A D E O F M o 9 8 . S. S h a s t r y a n d
J . P . R o a l s v i g , S t a t e U n i v e r s i t y of N e w Y o r k a t B u f f a l o .
io
-iQ
3
3R
L E V E L S IN A r
FROM THE K
(d, He ) A r
R E A C T I O N . T. Wei,
W. S. G r a y , J . J a n e e k e a n d R . M . P o l i c h a r , T h e U n i v e r s i t y of
Michigan.
•3 ^
INELASTIC SCATTERING OF PROTONS FROM
A r . J a m e s L.
Snelgrove and Edwin Kashy, Michigan State U n i v e r s i t y .
DOPPLER SHIFT ATTENUATION MEASUREMENTS OF LIFET I M E S IN C a 4 0 .
J . R . M a c D o n a l d , D. F . H. S t a r t , R . A n d e r s o n ,
A . G. R o b e r t s o n a n d M . A. G r a c e , N u c l e a r P h y s i c s L a b o r a t o r y ,
Oxford.
40
40
40
41
40
41
THE
Ca(d,d)
Ca,
C a ( d , p)
Ca and
C a ( d , n) Sc R E A C T I O N S .
H. G. L e i g h t o n , G. R o y , D. P . G u r d a n d T . B. G r a n d y ,
U n i v e r s i t y of A l b e r t a .
4n
41
42
43
48
49
- 44 -
DE
8.
L E V E L S T R U C T U R E O F 4 & T i . L. B r o m a n ,
B. R o s n e r , U n i v e r s i t y of P e n n s y l v a n i a .
DE
9.
REVIEW O F THE 4 7 V - 4 ? T i B E T A DECAY.
L a r s B r o m a n , U n i v e r s i t y of P e n n s y l v a n i a .
D. J . P u l l e n a n d
B a r u c h R o s n e r and
D E 10.
T H E L E V E L S T R U C T U R E O F C o 5 6 . T . A. B e l o t e , W. E .
B . J . O ' B r i e n a n d J . R a p a p o r t , M . I. T .
DE 11.
THE LEVEL STRUCTURE OF V
a n d T . A. B e l o t e , M . I. T .
D E 12.
THE LEVEL STRUCTURE OF Mn52.
a n d T . A. B e l o t e , M . I. T .
DE 13.
(n, n ' y ) R E A C T I O N S WITH M n 5 5 , C o 5 9 , C u 6 3 , C u 6 5 , L a ' 3 9 and
P r 1 4 1 USING 2 . 3 T O 2. 9 M e V N E U T R O N S . J . F e l s t e i n e r a n d
J . M . D a n i e l s , U n i v e r s i t y of T o r o n t o .
D E 14.
L I F E T I M E O F T H E 8 8 5 - k e V L E V E L IN
I T i 4 6 . G. K. T a n d o n ,
B a r t o l R e s e a r c h F o u n d a t i o n a n d U n i v e r s i t y of M a n i t o b a .
Dorenbusch,
4ft
THURSDAY,
.
W. E . D o r e n b u s c h ,
J.
J . R a p a p o r t , W. E .
Rapaport,
Dorenbusch
J u n e 22, 2:00 p . m .
Session DF
HIGH E N E R G Y PHYSICS
- EXPERIMENTAL
J . D. P r e n t i c e , C h a i r m a n
R a m s e y Wright
110
DF
1.
I N V E S T I G A T I O N O F T H E R E A C T I O N it"p->Zw~ 2TT+n A T 6. 0 G e V / c .
W. E . P o w e r s , H. J . M a r t i n , E . D. A l y e a , J r . , R . R . C r i t t e n d e n
a n d W. Z . O s b o r n e , I n d i a n a U n i v e r s i t y .
DF
2.
S T R A N G E - P A R T I C L E , TWO- AND F O U R - P R O N G R E A C T I O N S F R O M
6 B e V / c Tr'p I N T E R A C T I O N S . T . M . S m a l l , E . D. A l y e a , J r . ,
R . R . C r i t t e n d e n , H. J . M a r t i n a n d W. Z . O s b o r n e , I n d i a n a
University.
DF
3.
A D E T E R M I N A T I O N O F T H E S P I N A N D P A R I T Y O F T H E A 2 ( 1310)
M E S O N . A . W. K e y , P . B e r e n y i , J . D. P r e n t i c e , N. R . S t e e n b e r g ,
E . W e s t a n d T . S. Y o o n , U n i v e r s i t y of T o r o n t o ; W. A. C o o p e r ,
W. M a n n e r a n d L . V o y v o d i c , A r g o n n e N a t i o n a l L a b o r a t o r y ; a n d
W. D. W a l k e r , U n i v e r s i t y of W i s c o n s i n .
- 45 -
DF
4.
SIX- P R O N G E V E N T S IN TT~p I N T E R A C T I O N S .
P. Berenyi,
J . D. P r e n t i c e , N. R . S t e e n b e r g a n d T . S. Y o o n , U n i v e r s i t y
of T o r o n t o a n d W. D. W a l k e r , U n i v e r s i t y of W i s c o n s i n .
DF
5.
A D E T E R M I N A T I O N O F S - W A V E 1 = 2 WIT S C A T T E R I N G C R O S S
S E C T I O N . T . S. Y o o n , P . B e r e n y i , A. W. K e y , J . D. P r e n t i c e ,
N. R. S t e e n b e r g a n d E . W e s t , U n i v e r s i t y of T o r o n t o ; W. A. C o o p e r ,
W. M a n n e r , L . V o y v o d i c , A r g o n n e N a t i o n a l L a b o r a t o r y ; a n d
W. D. W a l k e r , U n i v e r s i t y of W i s c o n s i n .
DF
6.
T W O - P R O N G + L A M B D A E V E N T S IN K~d I N T E R A C T I O N S A T
2. 24 B e v / c . H. J . M a r t i n , E . D. A l y e a a n d R . R . C r i t t e n d e n ,
Indiana University.
DF
7.
N O N M E S I C D E C A Y R A T E O F H e . H. G. M i l l e r , M. W. H o l l a n d
a n d J . P . R o a l s v i g , S t a t e U n i v e r s i t y of N e w Y o r k a t Buffalo-.
DF
8.
S I N G L E S C A T T E R I N G O F 5 G e v / c M U O N S IN N U C L E A R E M U L S I O N .
P . J . M c N u l t y , C l a r k s o n I n s t i t u t e of T e c h n o l o g y a n d S t a t e
U n i v e r s i t y of N e w Y o r k a t B u f f a l o ; R . O. B r e a u l t a n d P . L . J a i n ,
S t a t e U n i v e r s i t y of N e w Y o r k a t B u f f a l o .
DF
9.
TT-p E L A S T I C S C A T T E R I N G IN T H E B A C K W A R D H E M I S P H E R E A T
6 A N D 10 G e V / c . D. P . O w e n , J . O r e a r , F . P e t e r s o n , A. L . R e a d ,
D. G. R y a n a n d D. H. W h i t e , C o r n e l l U n i v e r s i t y a n d A. A s h m o r e ,
C. J . S. D a m e r e l l , W. R . F r i s d e n a n d R . R u b i n s t e i n , B r o o k h a v e n
National Laboratory.
D F 10.
Kir R E S O N A N C E S .
Manitoba.
K y u s u k C h o a n d M.
L i o u , U n i v e r s i t y of
D F 11.
I N T E R A C T I O N S O F P O S I T I V E P I O N S A T 5 . 4 G e V / c . W. A. C o o p e r ,
W. M a n n e r , B . M u s g r a v e a n d L . V o y v o d i c , A r g o n n e N a t i o n a l
Laboratory.
D F 12.
GAMMA RAY S P E C T R U M OBSERVATIONS AT BALLOON ALTIT U D E S . ( 0 . 1 - 1 M e V ) . E d w a r d L . C h u p p a n d A. A. S a r k a d y ,
U n i v e r s i t y of N e w H a m p s h i r e .
D F 13.
O B S E R V A T I O N O F VERY HEAVY P R I M A R Y COSMIC RAYS.
M. R. Q u e r r y , K a n s a s State U n i v e r s i t y and E. J. Kobetich and
R o b e r t K a t z , U n i v e r s i t y of N e b r a s k a .
- 46 -
WEDNESDAY,
S e s s i o n DG
J u n e 21, 2 : 0 0 p . m .
L A S E R S II
A. L . S c h a w l o w , C h a i r m a n
R a m s e y Wright
117
DG
1.
S T I M U L A T E D R A Y L E I G H S C A T T E R I N G . T . A. W i g g i n s , C. W. C h o ,
N. D. F o l t z a n d D. H. R a n k , P e n n s y l v a n i a S t a t e U n i v e r s i t y .
DC
2.
N O N - R E S O N A N T S T I M U L A T E D 9 0 ° S C A T T E R I N G IN LIQUIDS.
J . L . E m m e t t a n d A. L . S c h a w l o w , S t a n f o r d U n i v e r s i t y .
DG
3.
KERR E F F E C T SATURATION AND THE SIZE O F S M A L L - S C A L E
T R A P P E D F I L A M E N T S . R . Y. C h i a o , J . D. D o d s o n , D. M. I r w i n
a n d T . K. G u s t a f s o n , M . I. T .
DG
4.
E F F E C T O F S T I M U L A T E D BRILLOUIN S C A T T E R I N G ON LASER
O U T P U T . A . J . A l c o c k a n d C . de M i c h e l i s , N a t i o n a l R e s e a r c h
C o u n c i l of C a n a d a .
DG
5.
F R E Q U E N C Y B R O A D E N I N G O F T R A P P E D L I G H T IN S M A L L
F I L A M E N T S . H. P . H. G r i e n e i s e n a n d C. A. S a c c h i , M. I. T .
DG
6.
AN E X P L A N A T I O N O F T H E A N G U L A R A N D S P E C T R A L D I S T R I B U T I O N O F A N T I - S T O K E S L I G H T G E N E R A T E D BY S E L F T R A P P I N G IN L I Q U I D S . C . A. S a c c h i a n d C. H. T o w n e s , M. I. T .
DG
7.
T H E E V O L U T I O N O F I N T E N S E S H O R T P U L S E S IN N O N - L I N E A R
O P T I C A L M E D I A . T . K. G u s t a f s o n , F . D e M a r t i n i a n d C. H. T o w n e s ,
M . I. T . a n d P . L . K e l l e y , L i n c o l n L a b o r a t o r y , M. I. T .
DG
8.
W I D E R A N G E C O N T I N U O U S L Y T U N A B L E HIGH P O W E R SUM
FREQUENCY GENERATION. Robert Carman, Lincoln Laboratory,
M . I. T . , a n d J e f f e r s o n P h y s i c a l L a b o r a t o r y , H a r v a r d U n i v e r s i t y .
DG
9.
S E C O N D H A R M O N I C G E N E R A T I O N O F L I G H T IN O P T I C A L L Y A C T I V E
C R Y S T A L S . N. B l o e m b e r g e n a n d J . S i m o n , H a r v a r d U n i v e r s i t y .
DG 10.
QUASI CW G E N E R A T I O N O F F A R I N F R A R E D D I F F E R E N C E
F R E Q U E N C I E S . F r i t s Z e r n i k e , The P e r k i n - E l m e r C o r p o r a t i o n .
- 47 -
WEDNESDAY,
S e s s i o n DH
J u n e 21, 2 : 0 0 p . m .
P O S I T R O N S AND G E N E R A L T O P I C S
D. A. L. P a u l , C h a i r m a n
McLennan
134
DH
1.
A N N I H I L A T I O N L I N E S H A P E A T HIGH C O U N T R A T E S .
M a c K e n z i e a n d B. T. A. M c K e e , D a l h o u s i e U n i v e r s i t y .
I. K.
DH
2.
P O S I T R O N L I F E T I M E S IN P L A S T I C A L L Y D E F O R M E D M E T A L S .
B. T . A. M c K e e , H. M . B. B i r d a n d I. K. M a c K e n z i e , D a l h o u s i e
University.
DH
3.
T H E I N F L U E N C E O F A B S O R B E D O X Y G E N ON P O S I T R O N D E C A Y
P R O C E S S E S IN M O L E C U L A R S I E V E S . J . H. ' B o u l t e r a n d
I. K. M a c K e n z i e , D a l h o u s i e U n i v e r s i t y .
DH
4.
T E M P E R A T U R E D E P E N D E N C E O F P O S I T R O N L I F E T I M E S IN
M E T A L S . T . L. Khoo a n d I. K. M a c K e n z i e , D a l h o u s i e U n i v e r s i t y .
DH
5.
P O S I T R O N A N N I H I L A T I O N IN R E A L M E T A L S .
A. S a l v a d o r i , M c M a s t e r U n i v e r s i t y .
DH
6.
R E L A X A T I O N O F P O S I T R O N S IN M E T A L S .
J. P. Carbotte, M c M a s t e r University.
DH
7.
POSITRON ANNIHILATION A P P A R A T U S UTILIZING CYLINDRICAL
G E O M E T R Y . W i l l i a m H. Holt a n d W a l t e r E . M i l l e t t , U n i v e r s i t y
of T e x a s .
DH
8.
Z E R O P O I N T P O S I T R O N I U M B U B B L E S IN LIQUIDS. C. V. B r i s c o e ,
S. I. C h o i a n d A. T . S t e w a r t , U n i v e r s i t y of N o r t h C a r o l i n a a t
Chapel Hill.
DH
9.
O N S E T O F H A R M O N I C D I S T O R T I O N IN K B r A T LOW F R E Q U E N C I E S .
H. J . W i n t l e , Q u e e n ' s U n i v e r s i t y .
J. P . C a r b o t t e a n d
E. J. Woll, J r .
and
DH 10.
E L E C T R O N S P E C T R O S C O P Y WITH A SILICON S U R F A C E BARRIER
D E T E C T O R . J . D. M a c A r t h u r a n d E . A. H e i g h w a y , Q u e e n ' s
University.
DH 11.
R A D I O I S O T O P E P O W E R E D S E C O N D A R Y EMISSION C O L D C A T H O D E
( I S E C ) . V. S r e p e l , N o r t h r o p C o r p o r a t i o n .
DH 12.
T H E ION E X P L O S I O N S P I K E .
U n i v e r s i t y of N e b r a s k a .
E. J. Kobetich and R o b e r t Katz,
- 48 -
D H 13.
T R A C K F O R M A T I O N IN D I E L E C T R I C S .
K o b e t i c h , U n i v e r s i t y of N e b r a s k a .
R o b e r t Katz and E.
J.
DH 14.
G U I D I N G C E N T E R T R A J E C T O R I E S IN T H E S U P E R C O N D U C T I N G
LEVITRON. Eugene J. L a u e r and R o b e r t P. F r e i s , L a w r e n c e
Radiation Laboratory.
T H U R S D A Y , J u n e 22, 2:00 p . m .
S e s s i o n DI
PHONON S P E C T R A
R. A. Cowley, C h a i r m a n
Lash Miller
161
DI
1.
P H O N O N D I S P E R S I O N R E L A T I O N S F O R H O L M I U M . J . A. L e a k e ,
V. J . M i n k i e w i c z , R . N a t h a n s a n d G. S h i r a n e , B r o o k h a v e n
National Laboratory.
DI
2.
L A T T I C E V I B R A T I O N S IN B I S M U T H . D a r r y l B . S m i t h , J o h n L .
W a r r e n and John L. Y a r n e l l , Los A l a m o s Scientific L a b o r a t o r y .
DI
3.
AN A B I N I T I O C A L C U L A T I O N O F T H E P H O N O N D I S P E R S I O N
C U R V E S F O R D I A M O N D . J a m e s A. Y o u n g , G e n e r a l A t o m i c
D i v i s i o n , G e n e r a l D y n a m i c s C o r p o r a t i o n a n d A. A. M a r a d u d i n ,
U n i v e r s i t y of C a l i f o r n i a .
DI
4.
T H E O R E T I C A L PHONON DISPERSION CURVES FOR BERYLLIUM.
J u a n U. K o p p e l , G e n e r a l A t o m i c D i v i s i o n , G e n e r a l D y n a m i c s
C o r p o r a t i o n a n d A. A. M a r a d u d i n , U n i v e r s i t y of C a l i f o r n i a .
DI
5.
D I S P E R S I O N R E L A T I O N S F O R P H O N O N S IN M A G N E S I U M
F L U O R I D E . R . S. K r i s h n a n a n d R . S. K a t i y a r , I n d i a n I n s t i t u t e
of S c i e n c e .
DI
6.
A N G U L A R F O R C E S IN T H E L A T T I C E D Y N A M I C S O F f . c . c .
P . S. Y u e n a n d Y. P . V a r s h n i , U n i v e r s i t y of O t t a w a .
DI
7.
ON THE TENSOR F O R C E M O D E L FOR CUBIC CRYSTALS.
R . C . S h u k l a a n d Y. P . V a r s h n i , U n i v e r s i t y of O t t a w a .
DI
8.
P H O N O N S IN N I O B I U M - M O L Y B D E N U M A L L O Y S . B. M . P o w e l l ,
P . M a r t e l a n d A. D. B . W o o d s , C h a l k R i v e r N u c l e a r L a b o r a t o r i e s .
DI
9.
C R Y S T A L D Y N A M I C S O F P A L L A D I U M . A. P . M i i l l e r a n d
B . N. B r o c k h o u s e , M c M a s t e r U n i v e r s i t y .
DI 10.
METALS.
E F F E C T S O F E L E C T R O N C O N C E N T R A T I O N ON C R Y S T A L
D Y N A M I C S O F B i - P b - T 1 A L L O Y S . S. C . Ng a n d B. N. B r o c k h o u s e ,
McMaster University.
- 49 -
DI 11.
L A T T I C E R E S O N A N T M O D E S IN A L K A L I H A L I D E A L L O Y S .
B. P . C l a y m a n , I. G. N o l t a n d A. J . S i e v e r s , C o r n e l l U n i v e r s i t y .
DI 12.
P H O N O N S I D E B A N D S O F S m + + IN K B r .
T. T i m u s k , M c M a s t e r U n i v e r s i t y .
DI 13.
T E M P E R A T U R E VARIATION O F THE IMPURITY-INDUCED
A B S O R P T I O N F O R K B r : L i B r . R . W. A l e x a n d e r , J r . a n d
A. J . S i e v e r s , C o r n e l l U n i v e r s i t y .
THURSDAY,
J u n e 22, 2:00 p . m .
S e s s i o n DJ
DJ
1.
M. Buchanan and
I N V I T E D P A P E R S ON C O M P U T E R S
IN M E D I C A L P H Y S I C S
J . R. C u n n i n g h a m , C h a i r m a n
Lash Miller
158
THE E F F E C T O F : F I E L D SHAPE, TISSUE INHOMOGENEITIES
A N D B E A M P E N U M B R A ON C O M P U T E R C A L C U L A T E D D O S E
D I S T R I B U T I O N , - C O B A L T - 6 0 . G. H o l t , F . R i t t e r a n d
J . S. L a u g h l i n , T h e O n t a r i o C a n c e r I n s t i t u t e . (20 m i n . )
DJ
2.
C A L C U L A T I O N O F T H R E E DIMENSIONAL ISODOSE C U R V E S
USING D E C R E M E N T L I N E S . M . D. P e t e r s o n , P . J . G i b b s ,
M . B. D a v i s , R . M . A d a m s a n d V. P . C o l l i n s , O n t a r i o C a n c e r
I n s t i t u t e . (20 m i n . )
DJ
3.
OPTIMIZATION O F E X T E R N A L RADIATION BEAMS FOR THERAPY
P L A N N I N G . J. L. G a l l a g h e r , T h e O n t a r i o C a n c e r I n s t i t u t e .
(20 m i n . )
DJ
4.
S O M E A P P L I C A T I O N S A N D AN E V A L U A T I O N O F T H E USE O F
S C A T T E R - A I R R A T I O S IN T H E P R O D U C T I O N O F M U L T I F I E L D
AND R O T A T I O N ISODOSE DISTRIBUTIONS.
J. R. C u n n i n g h a m ,
T h e O n t a r i o C a n c e r I n s t i t u t e . (20 m i n . )
DJ
5.
E X P E R I E N C E WITH A R E M O T E G E N E R A L E L E C T R I C TIMESHARING T E R M I N A L .
J . A. R a w l i n s o n , T h e O n t a r i o C a n c e r
I n s t i t u t e . (20 m i n . )
THURSDAY,
J u n e 22, 4 : 0 0 p . m .
M E E T I N G O F C . A. P . D I V I S I O N O F M E D I C A L
A N D B I O L O G I C A L P H Y S I C S TO DISCUSS
B R O A D E N I N G T H E S C O P E O F T H E DIVISION.
Lash Miller
158
- 50 -
WEDNESDAY,
S e s s i o n DK
J u n e 21, 2:00 p . m .
POSTDEADLINE PAPERS
G. D. S c o t t , C h a i r m a n
McLennan
134
T H U R S D A Y , J u n e 22, 2:00 p . m .
Session DL
E A R T H P H Y S I C S II
J. E. Blanchard, C h a i r m a n
Lash Miller
162
DL
1.
M A G N E T I C D E E P SOUNDING AND L O C A L C O N D U C T I V I T Y
A N O M A L I E S IN T H E E A R T H . D. I. G o u g h a n d J . S. R e i t z e l ,
U n i v e r s i t y of A l b e r t a a n d S o u t h w e s t C e n t e r f o r A d v a n c e d S t u d i e s ,
Dallas, Texas.
DL
2.
M A G N E T O T E L L U R I C S U R V E Y IN S O U T H E R N A L B E R T A .
D. R a n k i n , U n i v e r s i t y of A l b e r t a .
DL
3.
INLAND, C O A S T A L AND O F F S H O R E M A G N E T O T E L L U R I C
M E A S U R E M E N T S . S. P . S r i v a s t a v a , B e d f o r d I n s t i t u t e of
O c e a n o g r a p h y , D a r t m o u t h , N. S.
DL
4.
G E O M A G N E T I C V A R I A T I O N S T U D I E S IN I C E L A N D .
a n d G. D. G a r l a n d , U n i v e r s i t y of T o r o n t o .
DL
5.
A GRAVIMETRIC DETERMINATION O F THE VERTICAL ICE
M O V E M E N T O F T H E PENNY ICE C A P , B A F F I N ISLAND.
J. R. W e b e r , Gravity Division, Dominion O b s e r v a t o r y .
DL
6.
A P P L I C A T I O N O F GRAVITY DATA TO G E O D E T I C STUDIES AT
T H E DOMINION O B S E R V A T O R Y . D e z s o N a g y , G r a v i t y D i v i s i o n ,
Dominion Observatory.
J. F.
Hermance
- 51 -
DL
7.
A REVIEW O F EARTHQUAKE MECHANISM STUDIES.
Anne E. Stevens, Dominion O b s e r v a t o r y , Ottawa.
DL
8.
T H E NEW E A R T H TIDE OBSERVATORY NEAR OTTAWA.
D. R . B o w e r , G r a v i t y D i v i s i o n , D o m i n i o n O b s e r v a t o r y .
DL
9.
S U R F A C E W A V E S IN T H E V I C I N I T Y O F L A R G E C H E M I C A L
E X P L O S I O N S A T S U F F I E L D . H. S. H a s e g a w a , D o m i n i o n
Observatory, Ottawa.
D L 10.
SHORT P E R I O D P WAVE E V I D E N C E O F C R U S T A L INHOMOG E N E I T I E S . R . M. E l l i s a n d P . W. B a s h a m , U n i v e r s i t y of
British Columbia.
THURSDAY,
J u n e 22, 6 : 0 0 p . m .
The Quadrangle
University College
COCKTAIL PARTY FOR THOSE ATTENDING THE BANQUET.
THURSDAY,
J u n e 22, 7 : 0 0 p . m .
The G r e a t Hall
Hart House
BANQUET OF THE AMERICAN PHYSICAL SOCIETY,
THE CANADIAN ASSOCIATION O F PHYSICISTS, AND LA
SOCIEDAD M E X I C A N A DE FISICA
AFTER-DINNER SPEAKER:
H. E . D U C K W O R T H
VICE-PRESIDENT, ACADEMIC
UNIVERSITY O F MANITOBA
P R E S E N T A T I O N O F T H E C . A. P . M E D A L A W A R D TO
D R . B . N. B R O C K H O U S E .
P R E S E N T A T I O N O F T H E 1967 D A V I S S O N - G E R M E R
P R I Z E O F T H E A. P . S. T O D R . H. R . C R A N E .
- 52 -
F R I D A Y , J u n e 23, 9 : 0 0 a . m .
Session EA
S Y M P O S I U M ON L A T T I C E D Y N A M I C S
J. Van Kranendonk, C h a i r m a n
McLennan
102
EA
1.
P H O N O N D I S P E R S I O N C U R V E S IN A S I N G L E C R Y S T A L O F
K R Y P T O N . W. B. D a n i e l s , B r o o k h a v e n N a t i o n a l L a b o r a t o r y
a n d P r i n c e t o n U n i v e r s i t y . (30 m i n . )
EA
2.
A N H A R M O N I C E F F E C T S IN S O L I D S . R . A. C o w l e y ,
E n e r g y of C a n a d a , L i m i t e d . (30 m i n . )
EA
3.
I N E L A S T I C N E U T R O N S C A T T E R I N G F R O M K T a O ^ AND B a T i O ^
G. S h i r a n e , B r o o k h a v e n N a t i o n a l L a b o r a t o r y . (30 m i n . )
EA
4.
D Y N A M I C S O F L I Q U I D H E L I U M . A. D. B. W o o d s ,
E n e r g y of C a n a d a , L i m i t e d . (30 m i n . )
EA
5.
C R Y S T A L DYNAMICS O F M E T A L L I C ALLOYS.
M c M a s t e r U n i v e r s i t y . (30 m i n . )
Atomic
Atomic
B. N.
Brockhouse,
F R I D A Y , J u n e 23, 9 : 0 0 a . m .
Session EB
I N V I T E D P A P E R S ON N U C L E A R
P H Y S I C S (C)
G. C . H a n n a , C h a i r m a n
McLennan
103
EB
1.
A G E N E R A L A P P R O A C H TO FRACTIONAL PARENTAGE
C O E F F I C I E N T S . M. M o s h i n s k y , U n i v e r s i d a d d e M e x i c o . (30 m i n . )
EB
2.
A B S O R P T I O N O F P I O N S IN C O M P L E X N U C L E I .
U n i v e r s i t é d e M o n t r e a l . (30 m i n . )
EB
3.
ELASTIC SCATTERING OF NUCLEONS FROM NUCLEI.
B . M a r g o l i s , M c G i l l U n i v e r s i t y . (30 m i n . )
EB
4.
HEAVY-ION COULOMB EXCITATION.
of R o c h e s t e r . (30 m i n . )
EB
5.
N U C L E A R R E A C T I O N S AND T H E MANY BODY T H E O R Y .
A. M o n d r a g o n , U n i v e r s i d a d d e M e x i c o . (30 m i n . )
J. Le T o u r n e a u ,
H. E . G o v e ,
University
- 53 -
F R I D A Y , J u n e 23, 9 : 0 0 a . m .
Session EC
S Y M P O S I U M O F T H E DIVISION O F
P L A S M A PHYSICS O F A P S AND THE
E A R T H S C I E N C E S DIVISION O F C A P ;
P L A N E T A R Y AND S P A C E P L A S M A S
C . O. H i n e s , C h a i r m a n
McLennan
202
EC
1.
S C A L E D L A B O R A T O R Y E X P E R I M E N T S ON M A G N E T O S P H E R I C
P H E N O M E N A . M . A. B a c h y n s k i , R . C. A. L a b o r a t o r i e s ,
M o n t r e a l . (30 m i n . )
EC
2.
E L E C T R I C F I E L D S IN T H E M A G N E T O S P H E R E .
C o r n e l l U n i v e r s i t y . (30 m i n . )
EC
3.
PROBE MEASUREMENTS O F IONOSPHERIC PLASMAS.
W. H e i k k i l a , G r a d u a t e C e n t e r of t h e S o u t h w e s t C e n t e r f o r
A d v a n c e d S t u d i e s . (30 m i n . )
EC
4.
L O W E R H Y B R I D R E S O N A N C E AS O B S E R V E D IN T H E T E R R E S T R I A L
IONOSPHERE. R. Barrington, Defence R e s e a r c h Telecommunic a t i o n s E s t a b l i s h m e n t , O t t a w a . (30 m i n . )
N.
Brice,
F R I D A Y , J u n e 23, 9 : 0 0 a . m .
Session ED
PLASMA PHYSICS;
E X P E R I M E N T A L II - A R C S ,
D I S C H A R G E S AND G L O W S
F. Ribe, Chairman
McLennan
203
ED
1.
C H A R A C T E R I S T I C S O F A M A G N E T I C A L L Y C O L L I M A T E D HIGH
P R E S S U R E HIGH C U R R E N T H E L I U M A R C . W. L. S t i r l i n g and
C. E . N i e l s e n , O a k R i d g e N a t i o n a l L a b o r a t o r y .
ED
2.
I N T E R P R E T A T I O N O F F L U C T U A T I O N S IN T H E D I S C H A R G E A R C
C O L U M N . K. C h u n g a n d D. J . R o s e , M. I. T .
ED
3.
ION T E M P E R A T U R E IN A H O L L O W C A T H O D E A R C P L A S M A
C O L U M N . M a r t i n H u d i s , K. C h u n g a n d D. J . R o s e , M. I. T .
ED
4.
S P A T I A L A S Y M M E T R I E S IN P L A S M A D I F F U S I O N E X P E R I M E N T S .
J o h n C. W a r r e n a n d R o b e r t V. P y l e , L a w r e n c e R a d i a t i o n L a b o r a t o r y .
- 54 -
ED
5.
I N T E R N A L GASEOUS E L E C T R O N I C S AND EMISSION MECHANISM
O F T H E H O L L O W C A T H O D E D I S C H A R G E . M . D. L u b i n and
D. J . R o s e , M . I. T .
ED
6.
A C O U S T I C I N T E R A C T I O N IN A N E O N G L O W D I S C H A R G E .
A l f r e d W. M . C o o p e r a n d J o e l L . C r a n d a l l , J r . , N a v a l P o s t g r a d u a t e School, M o n t e r e y , California.
ED
7.
C O z Q U E N C H I N G O F N I T R O G E N P I N K A F T E R G L O W BY
V I B R A T I O N A L E N E R G Y T R A N S F E R . A. K. G h o s h , A. I.
and C. R i c h a r d , R C A V i c t o r R e s e a r c h L a b o r a t o r i e s .
Carswell
ED
8.
E L E C T R O N - N E U T R A L COLLISION CROSS SECTION M E A S U R E M E N T S IN AN A F T E R G L O W N E O N P L A S M A . C . R . H o f f m a n n a n d
H. M . S k a r s g a r d , U n i v e r s i t y of S a s k a t c h e w a n .
ED
9.
O B S E R V A T I O N O F AN E M I S S I O N P E A K A T P L A S M A C U T O F F .
S. J . T e t e n b a u m a n d H. N. B a i l e y , L o c k h e e d P a l o A l t o R e s e a r c h
Laboratory.
E D 10.
E L E C T R O N T E M P E R A T U R E A N D P L A S M A P O T E N T I A L IN
M O V I N G S T R I A T I O N S . M i c h e l G. D r o u e t a n d G. G. C l o u t i e r ,
U n i v e r s i t é de M o n t r é a l .
E D 11.
L A N G M U I R P R O B E M E A S U R E M E N T S IN A P E N N I N G P L A S M A
GENERATOR.
J . S. V e r m a , T h e O h i o S t a t e U n i v e r s i t y a n d
P. Polishuk, Air F o r c e Flight Dynamics Laboratory.
E D 12.
A N A L Y S I S O F U L T R A F A S T D I S C H A R G E S IN AIR P R O D U C E D BY
A MEGAVOLT PULSE SYSTEM. J. Shuchatowitz, Stevens Institute
of T e c h n o l o g y a n d D. F i n k e l s t e i n , Y e s h i v a U n i v e r s i t y .
E D 13.
H I G H V O L T A G E V A C U U M S P A R K S W I T C H . A. H. W i l l i a m s ,
R . M . H e n s o n a n d J . W. M a t h e r , L o s A l a m o s S c i e n t i f i c L a b o r a t o r y .
FRIDAY,
J u n e 23, 9:00 a . m .
Session EE
EE
1.
N U C L E A R R E A C T I O N S IV
E. Kashy, Chairman
Lash Miller
159
S T U D Y O F T H E M n 5 5 ( H e 3 , d) F e 5 6 R E A C T I O N . P . F . H i n r i c h s e n ,
B a r t o l R e s e a r c h F o u n d a t i o n a n d B a r u c h R o s n e r , U n i v e r s i t y of
Pennsylvania.
- 55 -
144
EE
2.
T H E U S E O F G A M M A R A Y S IN F e
AS C A L I B R A T I O N STANDARDS.
P . H. B a r k e r a n d R . D. C o n n o r , U n i v e r s i t y of M a n i t o b a .
EE
3.
GAMMA RAY S P E C T R A L STUDY O F C O P P E R A C T I V I T I E S
P R O D U C E D BY P R O T O N I R R A D I A T I O N O F N A T U R A L C O P P E R .
R . A. B r o w n a n d K e n n e t h I. R o u l s t o n , U n i v e r s i t y of M a n i t o b a .
EE
4.
DECAY O F Z n 6 2 .
EE
5.
T H E D E C A Y O F G a 6 5 TO Z n 6 5 .
Yale University.
EE
6.
EE
7.
S T U D Y O F I S O B A R I C A N A L O G U E S T A T E IN Y 8 9 . G. C . D u t t ,
M . T . M c E l l i s t r e m a n d A. O b s t , U n i v e r s i t y of K e n t u c k y .
EE
8.
T H E S r 8 8 ( d , p) S r 8 9 R E A C T I O N A T 7. 0 M e V .
E . R . C o s m a n a n d H. A. E n g e , M . I. T .
EE
9.
S r 8 8 ( p , p ) A N D (p, p ' ) A N A L O G U E R E S O N A N C E S F R O M
E p = 7. 0 T O 8. 5 M e V . E . R . C o s m a n , M . I. T . , J . M . J o y c e ,
U n i v e r s i t y of P e n n s y l v a n i a a n d S. M . S h a f r o t h , B a r t o l R e s e a r c h
Foundation.
E E 10.
H. B a k h r u a n d A. L i - S c h o l z ,
Yale University.
A n g e l a L i - S c h o l z a n d H.
Bakhru,
75
DE
EC
CA
AY
Y O
OF
F
G
D
Gee.. R . E . W o o d , J o h n M . P a l m s a n d A n n N g ,
Emory University.
90
THE DECAY OF
Kr.
McMaster University.
A.
Sperduto,
J . F . M a s o n , M . W. J o h n s a n d W. B.
Cook,
89
E E 11.
I N E L A S T I C S C A T T E R I N G O F 61. 2 M e V P R O T O N S BY 7 Y .
A. S c o t t a n d M . L . W h i t e n , U n i v e r s i t y of G e o r g i a , J . B. B a l l ,
O a k R i d g e N a t i o n a l L a b o r a t o r y , a n d K. A. A m o s , U n i v e r s i t y of
Pittsburgh.
E E 12.
THE DECAY O F A g 1 0 6 m .
U n i v e r s i t y of T o r o n t o .
E E 13.
A N G U L A R D I S T R I B U T I O N A N A L Y S I S O F T H E Ag ' 0 7 (d, p) Ag ' 0 8
R E A C T I O N S . M a r i a O r t i z d e L o p e z , M . M a z a r i , U n i v e r s i t y of
M e x i c o , A. S p e r d u t o a n d W. W. B u e c h n e r , M . I. T .
E E 14.
DECAY O F S n 1 2 1 AND S n 1 2 1 m .
Wayne State University.
N. N e f f , J . D. K i n g a n d H. W.
R . E . S n y d e r a n d G. B.
Taylor,
Beard,
- 56 -
F R I D A Y , J u n e 23, 9 : 0 0 a . m .
Session E F
T H E O R E T I C A L PHYSICS
W. O p e c h o w s k i , C h a i r m a n
R a m s e y Wright
110
EF
1.
O N E DIMENSIONAL QUANTUM SYSTEM WITH PERIODIC
P O T E N T I A L . M. H. K a l o s , C o u r a n t I n s t i t u t e of M a t h e m a t i c a l
Sciences.
EF
2.
B O S O N - F E R M I O N M O D E L O F B A R Y O N S A N D SU(6).
D. B. L i c h t e n b e r g , I n d i a n a U n i v e r s i t y , a n d L . J . T a s s i e ,
of C a n b e r r a .
University
EF
3.
C H A R G E D E P E N D E N C E AND CHARGE ASYMMETRY O F N U C L E A R
F O R C E S D U E T O P H O T O N - P I O N E X C H A N G E . J . S. L e u n g a n d
Y. N o g a m i , M c M a s t e r U n i v e r s i t y .
EF
4.
E L E C T R O M A G N E T I C PRODUCTION O F PIONS FROM NUCLEI.
A. K. K e r m a n a n d L . M . S a u n d e r s , M. I. T .
EF
5.
A GAUGE INVARIANT THEORY O F VECTOR MESON DOMINANCE.
L a i - H i m Chan, Brookhaven National L a b o r a t o r y .
EF
6.
E Q U I L I B R I U M AND LINEAR R E S P O N S E O F A F E R M I CAS
I N T E R A C T I N G T H R O U G H A S C A L A R F I E L D . G. K a l m a n , B r a n d e i s
University.
EF
7.
TRANSFORMATION C O E F F I C I E N T S FOR HARMONIC OSCILLATOR
F U N C T I O N S . I r a L . K a r p , F l o r i d a I n s t i t u t e of T e c h n o l o g y .
EF
8.
ON T H E D E G E N E R A C Y O F T H E M A G N E T I C M O N O P O L E .
H a r o l d V. M c i n t o s h , N a t i o n a l P o l y t e c h n i c I n s t i t u t e of M e x i c o .
EF
9.
T H E O R Y O F A S E L F - I N T E R A C T I N G DIRAC F I E L D . J o n a s S.
Z m u i d z i n a s , J e t P r o p u l s i o n L a b o r a t o r y , C a l i f o r n i a I n s t i t u t e of
Technology.
E F 10.
C O V A R I A N T G U P T A WAVE F U N C T I O N S F O R T H E E L E C T R O M A G N E T I C F I E L D . J . H. C o o k e , U n i v e r s i t y of M a n i t o b a .
E F 11.
G E N E R A L R E L A T I V I S T I C F I E L D E Q U A T I O N S AND E Q U A T I O N S O F
M O T I O N IN O P E R A T O R F O R M . P . D. P . S m i t h , M e m . U n i v .
of N f l d .
E F 12.
LINEAR M O M E N T U M "SPIN".
Manitoba.
H. R . C o i s h , U n i v e r s i t y of
- 57 -
E F 13.
R E L A T I V I S T I C C O R R E C T I O N IN P O T E N T I A L S C A T T E R I N G .
Z e n o V. C h r a p l y v y , S a i n t L o u i s U n i v e r s i t y .
E F 14.
SOLUTIONS O F THE C O N F L U E N T H Y P E R G E O M E T R I C EQUATION
A N D R E L A T E D F U N C T I O N S IN A S P E C I A L C A S E . Koo Sun K i m ,
C e n t e r f o r E x p l o r a t o r y S t u d i e s , I. B . M . C o r p o r a t i o n .
E F 15.
A N O T H E R F O R M U L A F O R LOWER BOUNDS TO E N E R G Y
E I G E N V A L U E S . M . B e r s o h n , J . D. A n g l i n , P . E . A u s t i n a n d
D. K. E v a n s , U n i v e r s i t y of T o r o n t o .
FRIDAY,
J u n e 23, 9:00 a . m .
Session EG
ATOMIC AND M O L E C U L A R PHYSICS
(THEORY)
B . G. H o g g , C h a i r m a n
Ramsey
117
Wright
EG
1.
E L E C T R O N I C C O M P L E X E S O F DIATOMIC M O L E C U L E S .
D. W. L e p a r d , N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a .
EG
2.
S O M E G R O U N D - S T A T E E N E R G Y E I G E N F U N C T I O N S F O R AN
E L E C T R O N - D I P O L E S Y S T E M . K e n n e t h F o x , U n i v e r s i t y of
T e n n e s s e e and Oak R i d g e National L a b o r a t o r y and J. E. T u r n e r and
V. E . A n d e r s o n , O a k R i d g e N a t i o n a l L a b o r a t o r y .
EG
3.
BOUNDS ON A T O M I C P O L A R I Z A B I L I T I E S .
University.
EG
4.
D I P O L E H Y P E R P O L A R I Z A B I L I T I E S O F F I R S T ROW A T O M S AND
I O N S . G. W. F . D r a k e a n d M . C o h e n , Y o r k U n i v e r s i t y .
EG
5.
F R O Z E N CORE A P P R O X I M A T I O N AND P S E U D O P O T E N T I A L S FOR
L O W L Y I N G S T A T E S O F F I R S T R O W A T O M S A N D IONS. P a u l S.
Kelly and M a u r i c e Cohen, L o c k h e e d P a l o Alto R e s e a r c h L a b o r a t o r y .
EG
6.
T H E S T A B I L I T Y O F A R E S T R I C T E D HAR T R E E - F O C K - L I K E
D E T E R M I N A N T A L W A V E - F U N C T I O N UNDER THE R E M O V A L O F A
S Y M M E T R Y R E S T R I C T I O N . E v e r e t t G. L a r s o n , B r i g h a m Y o u n g
University.
EG
7.
T W O - P A R T I C L E C O R R E L A T I O N C A L C U L A T I O N S IN A T O M S .
W. R . C o n k i e , Q u e e n ' s U n i v e r s i t y .
A. D. S t a u f f e r ,
York
- 58 -
EG
8.
ENERGY L E V E L S , IONIZATION P O T E N T I A L S AND QUANTUM
D E F E C T S O F THE SINGLET AND T R I P L E T S - S T A T E S O F THE
H E L I U M I S O E L E C T R O N I C S E Q U E N C E . R. P . M c E a c h r a n and
M. Cohen, Y o r k U n i v e r s i t y .
EG
9.
T H E M O M E N T U M DISTRIBUTIONS O F TWO PHOTON ANNIHILATING
P O S I T R O N - E L E C T R O N P A I R S IN H E X A N E A N D D E C A N E .
S. Y. C h u a n g a n d B e n j a m i n G. H o g g , U n i v e r s i t y of M a n i t o b a .
E G 10.
ANGULAR CORRELATION OF POSITRON ANNIHILATION RADIATION
F R O M C E R I U M H Y D R I D E . D a n i e l R. G u s t a f s o n , W a y n e S t a t e
U n i v e r s i t y and R i c h a r d C. H e c k m a n , Sandia L a b o r a t o r y .
E G 11.
M O L E C U L A R PHOTO-IONIZATION CROSS SECTIONS.
B a r n e t t , Lockheed Palo Alto R e s e a r c h L a b o r a t o r y .
E C 12.
CALCULATION O F THE C A P T U R E CROSS SECTION FOR THE
I O N - P O L A R M O L E C U L E C O L L I S I O N , H C L + W I T H H C L . J o h n V.
D u g a n , J r . a n d J a m e s H. R i c e , N A S A - L e w i s R e s e a r c h C e n t e r a n d
J o h n L . M a g e e , U n i v e r s i t y of N o t r e D a m e .
FRIDAY,
Cene P.
J u n e 23, 9:00 a . m .
Session EH
M E T A L S AND A L L O Y S
W. B . P e a r s o n , C h a i r m a n
McLennan
134
EH
1.
D E H A A S - V A N A L P H E N E F F E C T IN T H E I N T E R M E T A L L I C
C O M P O U N D P t S n . W. N. C a t h e y a n d J . P . J a n , N a t i o n a l R e s e a r c h
C o u n c i l of C a n a d a .
EH
2.
O P T I C A L P R O P E R T I E S O F C O P P E R O X I D E F I L M S . A. W.
a n d J o s e p h R . B i e g e n , C l a r k s o n C o l l e g e of T e c h n o l o g y .
EH
3.
THE H A L L E F F E C T AND C U R R E N T - V O L T A G E CHARACTERISTICS
OF BISMUTH ABOVE THE CRITICAL F I E L D FOR ACOUSTIC
A M P L I F I C A T I O N . R i c h a r d G. S t o m , D a l h o u s i e U n i v e r s i t y .
EH
4.
T H E H A L L E F F E C T AND M A G N E T I C S U S C E P T I B I L I T Y O F P U R E
a M A N G A N E S E . G. T . M e a d e n a n d P . B e l l o u x - G e r v a i s , D a l h o u s i e
University.
Czanderna
- 59 -
EH
5.
N O N L I N E A R I T I E S IN T H E D E H A A S - V A N A L P H E N E F F E C T W I T H
F I N I T E C O M P L I A N C E C R Y S T A L MOUNTS. J. Vanderkooy and
W. R . D a t a r s , M c M a s t e r U n i v e r s i t y .
EH
6.
QUANTUM O S C I L L A T I O N S AND THE E F F E C T O F O P E N O R B I T S
ON T H E M I C R O W A V E S U R F A C E I M P E D A N C E O F M E R C U R Y .
R . G. P o u l s e n , A. E . D i x o n a n d W. R . D a t a r s , M c M a s t e r U n i v e r s i t y .
EH
7.
T H E T H E R M O P O W E R S O F Cd, Mg AND Zn F R O M 4. 2°K TO 300°K.
V. A. R o w e a n d P . A. S c h r o e d e r , M i c h i g a n S t a t e U n i v e r s i t y .
EH
8.
THE E L E C T R I C A L RESISTIVITY O F PALLADIUM-HYDROCEN
A L L O Y S . N. S. Ho a n d F . D. M a n c h e s t e r , U n i v e r s i t y of T o r o n t o .
EH
9.
T H E R M O E L E C T R I C P O W E R S AND R E S I S T I V I T I E S O F P R I M A R Y
S O L I D S O L U T I O N S O F Au, C d , Z n , I n C e , T1 A N D Sb IN S I L V E R .
L . S. W r i g h t , C a r l e t o n U n i v e r s i t y .
E H 10.
O P T I C A L P R O P E R T I E S O F A L P H A BRASSES.
G. F . O. L a n g s t r o t h , D a l h o u s i e U n i v e r s i t y .
R . C. B a i l e y a n d
E H 11.
E F F E C T I V E M A S S M E A S U R E M E N T IN A s „A S b ,l - x A L L O Y S .
V a n T o n g e r l o o a n d J o h n C . W o o l l e y , U n i v e r s i t y of O t t a w a .
E H 12.
LOW-TEMPERATURE SPECIFIC HEATS OF F A C E - C E N T E R E D
CUBIC R u - R h AND R h - P d ALLOYS. P a u l J. M. T s a n g and
C h u a n - T s e n g Wei, Michigan State U n i v e r s i t y .
E H 13.
LOW-TEMPERATURE SPECIFIC HEATS OF F A C E - C E N T E R E D
C U B I C P d - A g A N D A g - C d A L L O Y S . A . V. S. S a t y a a n d C h u a n T s e n g Wei, Michigan State University.
E H 14.
M A R T E N S I T I C T R A N S F O R M A T I O N S IN Z I N C M O D I F I E D b - A u C d .
M . O. F e i n a n d L . M u l d a w e r , T e m p l e U n i v e r s i t y .
E.
H.
- 60 -
F R I D A Y , J u n e 23, 9 : 0 0 a . m .
Session EI
H E A L T H P H Y S I C S S Y M P O S I U M (A)
REGULATORY CONTROLS, GUIDES
AND RECOMMENDATIONS
G. C . B u t l e r , C h a i r m a n
Lash Miller
158
A P A N E L DISCUSSION B A S E D ON T H E P R E - C I R C U L A T E D
P A P E R S , T H E T I T L E S AND A U T H O R S O F WHICH A R E
GIVEN BELOW:
EI
1.
THE TRANSPORTATION OF RADIOACTIVE MATERIALS.
R . W. B l a c k b u r n , A t o m i c E n e r g y C o n t r o l B o a r d , O t t a w a .
EI
2.
SOME ASPECTS OF THE APPLICATION OF INTERNATIONAL
S T A N D A R D S IN R A D I A T I O N P R O T E C T I O N P R A C T I C E S .
A. H. B o o t h , R a d i a t i o n P r o t e c t i o n D i v i s i o n , O t t a w a .
EI
3.
R E G U L A T O R Y C O N T R O L S IN T H E USE O F R A D I O I S O T O P E S .
A. K. D a s G u p t a , R a d i a t i o n P r o t e c t i o n D i v i s i o n , O t t a w a .
EI
4.
THE SAFETY ASPECTS O F NUCLEAR ACCELERATOR
J . M . R o b s o n , U n i v e r s i t y of O t t a w a .
EI
5.
I C R P ACTIVITIES.
EI
6.
T I T L E TO BE ANNOUNCED.
Foundation.
INSTALLATIONS.
G. G. S t e w a r t , A t o m i c E n e r g y of C a n a d a .
T . A. W a t s o n , O n t a r i o C a n c e r
O P E R A T I O N A L H E A L T H PHYSICS
P. M. B i r d , C h a i r m a n
Lash Miller
158
EI
7.
ADVANTAGES AND LIMITATIONS O F SEMICONDUCTOR
D E T E C T O R S IN M E D I C A L A N D B I O L O G I C A L P H Y S I C S A P P L I C A TIONS. R. M. G r e e n , RCA V i c t o r , M o n t r e a l .
EI
8.
L I T H I U M F L U O R I D E AS A P E R S O N N E L D O S I M E T E R .
A t o m i c E n e r g y of C a n a d a .
EI
9.
L E A K T E S T I N G USING A S C I N T I L L A T I N G F L U I D .
a n d J . S. R a w l i n s o n , U n i v e r s i t y of T o r o n t o .
A. C . S c o t t ,
J. R.
Cunningham
- 61 -
E I 10.
R A D I O L O G I C A L H E A L T H P R O B L E M S IN A U N I V E R S I T Y .
B. P. P a t e , Simon F r a s e r U n i v e r s i t y .
E I 11.
S E N S E A N D N O N S E N S E IN I N T E R N A L E X P O S U R E C R I T E R I A
AS E X E M P L I F I E D BY E X P E R I E N C E W I T H T R I T I A T E D H E A V Y
W A T E R . W. R . B u s h , A t o m i c E n e r g y of C a n a d a .
E I 12.
A STUDY O F RADIATION E X P O S U R E DOSES F R O M F I L M
M O N I T O R I N G S E R V I C E D A T A O F 1964 A N D 1965. R . N. K h a n d k a r ,
Radiation Protection Division.
FRIDAY,
J u n e 23, 9:00 a . m .
Session EJ
E A R T H P H Y S I C S III
C. C a r m i c h a e l , C h a i r m a n
Lash Miller
162
EJ
1.
T H E M A X W E L L B R I D G E A S A C I R C U I T E L E M E N T IN F E E D B A C K
S E I S M O G R A P H S . R . D. R u s s e l l , R . D. M e l d r u m a n d O. G. J e n s e n ,
U n i v e r s i t y of B r i t i s h C o l u m b i a .
EJ
2.
A T I M E - T E R M ANALYSIS O F THE F I R S T ARRIVAL DATA F R O M
T H E S E I S M I C E X P E R I M E N T IN H U D S O N B A Y , 1965.
Alan Ruffman, Dalhousie University.
EJ
3.
THE S T R U C T U R E O F THE CRUST AND U P P E R M A N T L E ACROSS
THE S U P E R I O R - C H U R C H I L L BOUNDARY F R O M "EARLY RISE"
D A T A . R . F . M e r e u a n d J . A. H u n t e r , U n i v e r s i t y of W e s t e r n
Ontario.
EJ
4.
REGIONAL MAGNETIC ANOMALIES, SURFACE MAGNETIZATION,
A N D T H E I R R E L A T I O N S H I P T O C R U S T A L S T R U C T U R E IN T H E
K E N O R A D I S T R I C T O F O N T A R I O . D. H. H a l l , U n i v e r s i t y of
Manitoba.
EJ
5.
GEOLOGICAL INTERPRETATIONS OF THE NELSON RIVER
A N D K A P U S K A S I N G G R A V I T Y H I G H S . R . A. G i b b , D o m i n i o n
O b s e r v a t o r y of C a n a d a .
EJ
6.
T H E T I M E S O F E M P L A C E M E N T O F A L K A L I N E R O C K S IN C A N A D A .
D. Y o r k , R . M . M a c i n t y r e a n d J . G i t t i n s , U n i v e r s i t y of T o r o n t o .
- 62 -
EJ
7.
L E A D I S O T O P E R A T I O S IN O R E S A N D IN A D J A C E N T R O C K S .
P . H. R e y n o l d s a n d R . D. R u s s e l l , U n i v e r s i t y of B r i t i s h
Columbia.
EJ
8.
THEORETICAL CALCULATION OF TRACE ELEMENT PARTITION
COEFFICIENTS.
D o n a l d N. S k i b o , G e o l o g i c a l S u r v e y of C a n a d a ,
Ottawa.
EJ
9.
V I S C O S I T Y O F T H E U P P E R M A N T L E . R . K. M c C o n n e l l ,
A r t h u r D. L i t t l e I n c . , C a m b r i d g e , M a s s a c h u s e t t s .
E J 10.
FRIDAY,
I N V I T E D P A P E R : T H E R M A L HISTORY O F THE E A R T H .
J . A. J a c o b s , U n i v e r s i t y of B r i t i s h C o l u m b i a .
J u n e 23, 9:00 a . m .
Session ES
D I V I S I O N O F F L U I D D Y N A M I C S II
J . G. H a l l , C h a i r m a n
Institute for
Aerospace
Studies
ES
1.
T H E R O L E O F F L U I D D Y N A M I C S IN C A R D I A C A S S I S T D E V I C E S .
A . K a n t r o w i t z , A v c o - E v e r e t t R e s e a r c h L a b o r a t o r y . (30 m i n . )
ES
2.
P R E S E N T STATUS O F NONEQUILIBRIUM F L O W S WITH
VIBRATIONAL AND DISSOCIATIONAL COUPLING. J. E.
U n i v e r s i t y of T o r o n t o . (30 m i n . )
Dove,
ES
3.
NONEQUILIBRIUM CORNER-EXPANSION FLOW INVESTIGATION
O F D I S S O C I A T E D O X Y G E N . J . E . D r e w r y a n d I. I. G l a s s ,
U n i v e r s i t y of T o r o n t o .
ES
4.
V I B R A T I O N A L E N E R G Y DISTRIBUTIONS DURING E X C H A N G E DOMINATED RELAXATION. Charles E. Treanor, Cornell
A e r o n a u t i c a l L a b o r a t o r y , Inc.
ES
5.
T H E U S E O F S E L F - C A L I B R A T I N G C A T A L Y T I C P R O B E S TO
M E A S U R E F R E E - S T R E A M A T O M C O N C E N T R A T I O N S . N. M .
I n s t i t u t e f o r A e r o s p a c e S t u d i e s , U n i v e r s i t y of T o r o n t o .
ES
6.
RADIATIVE E N E R G Y ADDITION BEHIND A SHOCK WAVE.
R o n a l d G. R e h m , C o r n e l l A e r o n a u t i c a l L a b o r a t o r y , I n c .
Reddy,
- 63 -
ES
7.
U N I F O R M I T Y AND D U R A T I O N O F H O T GAS S A M P L E S B E H I N D
L A B O R A T O R Y S H O C K S IN N O B L E G A S M I X T U R E S .
J o s e p h G. K e l l e y , A i r F o r c e C a m b r i d g e R e s e a r c h L a b o r a t o r i e s
a n d A r t h u r L . B e s s e , S t e v e n s I n s t i t u t e of T e c h n o l o g y .
ES
8.
DISPERSION R E L A T I O N S O F A DISSOCIATIVE GAS WITH
R A D I A T I V E H E A T T R A N S F E R . G. K. L e a , G e o r g e W a s h i n g t o n
U n i v e r s i t y a n d T . S. C h a n g , N o r t h C a r o l i n a S t a t e U n i v e r s i t y .
FRIDAY,
J u n e 23, 2:00 p . m .
Session FA
S Y M P O S I U M ON M E T A L PHYSICS
L. M. F a l i c o v , C h a i r m a n
McLennan
102
FA
1.
EXPERIMENTAL DETERMINATION OF FERMI SURFACES.
D. S c h o e n b e r g , C a m b r i d g e U n i v e r s i t y . (30 m i n . )
FA
2.
O P E N ORBITS AND THE F E R M I S U R F A C E O F M E R C U R Y .
W. R . D a t a r s , M c M a s t e r U n i v e r s i t y . ( 3 0 m i n . )
FA
3.
A N O M A L O U S SKIN E F F E C T A T L O W F R E Q U E N C I E S .
J . F . C o c h r a n , S i m o n F r a s e r U n i v e r s i t y . (30 m i n . )
FA
4.
HIGH F I E L D M A G N E T O R E S I S T A N C E O F CHROMIUM.
J . A. M a r c u s , N o r t h w e s t e r n U n i v e r s i t y . (30 m i n . )
FRIDAY,
J u n e 23, 2:00 p . m .
Session FB
TRANSPOR T P R O P E R TIES OF
SOLIDS
A. C . H o l l i s H a l l e t t , C h a i r m a n
McLennan
103
FB
1.
U L T R A S O N I C A T T E N U A T I O N IN N O R M A L A N D S U P E R C O N D U C T I N G
L E A D ; E L E C T R O N I C D A M P I N G O F D I S L O C A T I O N S . A. H i k a t a
and C. E l b a u m , B r o w n U n i v e r s i t y .
FB
2.
THE A T T E N U A T I O N AND R O T A T I O N O F ULTRASONIC SHEAR
W A V E S IN C O P P E R IN A L O N G I T U D I N A L M A G N E T I C F I E L D .
A. M . S i m p s o n a n d M . H. J e r i c h o , D a l h o u s i e U n i v e r s i t y .
- 64 -
FB
3.
U L T R A S O N I C A T T E N U A T I O N IN HIGH P U R I T Y N O R M A L A N D
S U P E R C O N D U C T I N G T H A L L I U M . H. J . W i l l a r d , J r . a n d
R . W. S h a w , R e n s s e l a e r P o l y t e c h n i c I n s t i t u t e .
FB
4.
A T T E N U A T I O N O F 9 G H z A C O U S T I C W A V E S IN P H O T O C O N D U C T I N G C d S . D. L . D e n b u r g , T h e J o h n s H o p k i n s U n i v e r s i t y .
FB
5.
INTERFEROMETRIC DETERMINATION OF THE DRIFT PULSE
INDUCED VARIATIONS O F THE ULTRASONIC GROUP VELOCITY
IN C d S . T e d M . F o s t e r , T h e J o h n s H o p k i n s U n i v e r s i t y .
FB
6.
E X P E R I M E N T A L E V I D E N C E F O R F I R S T A N D Z E R O S O U N D IN
K B r . E . C . S v e n s s o n , W. J . L . B u y e r s , C h a l k R i v e r N u c l e a r
Laboratories.
FB
7.
M A G N E T O P L A S M A W A V E P R O P A G A T I O N A T HIGH M A G N E T I C
F I E L D S IN T H E B I S M U T H - A N T I M O N Y A L L O Y S Y S T E M .
M i c h a e l G r e e n e b a u m , M . I. T .
FB
8.
E F F E C T O F M A G N E T I C F I E L D ON T H E C H A R G E C A R R I E R
D I S T R I B U T I O N IN A S T E A D Y S T A T E A M B I P O L A R D I F F U S I O N
C U R R E N T . M i l t o n G r e e n , U. S. N a v y U n d e r w a t e r S o u n d L a b o r a t o r y .
FB
9.
THE E F F E C T OF MULTIPLE REFLECTIONS OF ELECTRONS
A T C R Y S T A L B O U N D A R I E S ON M A G N E T O M O R P H I C O S C I L L A T O R Y
P H E N O M E N A . H. J . M a c k e y a n d J . R . S y b e r t , N o r t h T e x a s
State University.
F B 10.
A SIMPLE M O D E L FOR THE K A P I T Z A T H E R M A L RESISTANCE.
W. J . A b b e , U n i v e r s i t y of M i c h i g a n a n d U n i v e r s i t y of G e o r g i a a n d
P . E . C. R e s e a r c h A s s o c i a t e s .
F B 11.
S I Z E E F F E C T O S C I L L A T I O N S IN S I N G L E C R Y S T A L S O F
A L U M I N U M . J . R . S y b e r t , H. J . M a c k e y , H. C . M o l l e n k p f ,
North Texas State University.
F B 12.
M A G N E T O R E S I S T I V I T Y A N D H A L L E F F E C T IN H E A V I L Y - D O P E D
GERMANIUM-MANGANESE ALLOYS. F. T. Hedgcock,
C. Yamanouchi, McGill U n i v e r s i t y .
F B 13.
MAGNETO-OSCILLATOR Y ABSORPTION STUDIES OF THE YELLOW
S E R I E S IN C u , 0 IN d . c . F I E L D S T O 100 k G . J o h n H a l p e r n , M . I. T .
a n d B o r i s P . Z a k h a r c h e n y a , A. F . I o f f e P h y s i c o - T e c h n i c a l I n s t . ,
Leningrad.
- 65 -
F B 14.
FRIDAY,
HALL MEASUREMENTS OF Te-DOPED GaP OF IMPROVED
H O M O G E N E I T Y . H. C . M o n t g o m e r y , B e l l T e l e p h o n e L a b o r a t o r i e s .
J u n e 23, 2 : 0 0 p . m .
Session FC
G E N E R A L ATOMIC AND M O L E C U L A R
PHYSICS
A. E . D o u g l a s , C h a i r m a n
McLennan
202
FC
1.
A NEW M E T H O D O F EVALUATING THE MOSSBAUER
A B S O R P T I O N I N T E G R A L . G. P . H u f f m a n , N. P . L o u a t ,
United States Steel Corporation.
FC
2.
D Y N A M I C J A H N - T E L L E R E F F E C T IN O C T A H E D R A L L Y
C O O R D I N A T E D d 1 I M P U R I T Y S Y S T E M S . R . M. M a c F a r l a n e
a n d J . Y. W o n g , S t a n f o r d U n i v e r s i t y a n d M . D. S t u r g e , B e l l
Telephone Laboratories.
FC
3.
U L T R A V I O L E T A B S O R P T I O N S P E C T R A O F P r 3 + ION IN
ALKALINE E A R T H FLUORIDES. Eugene Loh, Douglas A i r c r a f t
Co. , Inc.
FC
4.
E X A M I N A T I O N O F T W O - S T A G E F L U O R E S C E N C E IN C d S A T
L O W T E M P E R A T U R E S . G e o r g e A. C o n d a s , J i c k H. Y e e ,
L a w r e n c e Radiation Lab. , L i v e r m o r e .
FC
5.
I N F L U E N C E O F A MAGNETIC F I E L D ON THE T R A N S P O R T
P R O P E R T I E S O F P O L Y A T O M I C GASES. J. K o r v i n g , K a m e r l i n g h
O n n e s L a b . , L e i d e n , H o l l a n d , H. F . P . K n a a p , U n i v e r s i t y of
T o r o n t o , R . G. G o r d o n , H a r v a r d U n i v e r s i t y , J . J . M . B e e n a k k e r ,
K a m e r l i n g h Onnes Lab.
FC
6.
THE COUPLING O F ROTATIONAL AND TRANSLATIONAL MOTION
O F T W O C O L D OR T H O - S T A T E H Y D R O G E N M O L E C U L E S IN T H E
GAS P H A S E . L o u i s W i j n b e r g , C o r n e l l A e r o . L a b . , Inc.
FC
7.
ANALYSIS O F A L K A L I S U R F A C E I O N I Z A T I O N ON P O R O U S
S U B S T R A T E S . O t t o K. H u s m a n n , N o r t h r o p N o r t r o n i c s .
FC
8.
OBSERVATIONS O F THE S P U T T E R I N G YIELDS AND E N E R C Y
T R A N S F E R E F F I C I E N C I E S IN S O L I D A N D L I Q U I D M E T A L S .
Hugh L. G a r v i n , H u g h e s R e s e a r c h L a b o r a t o r i e s .
- 66 -
FC
9.
PRESSURE STUDIES OF PURE SUPERFLUID FLOW.
A . F . H i l d e b r a n d t , H . E . C o r k e , U n i v e r s i t y of H o u s t o n .
F C 10.
ISOTOPIC THERMAL DIFFUSION FACTOR O F NITROGEN.
S. R a m a n , J . C h a m p l i n , A . J . H o w a r d , W. W. W a t s o n , Y a l e
University.
F C 11.
LIGHT SCATTERING F R O M T I M E - D E P E N D E N T MOLECULAR
O R I E N T A T I O N S A T R A M A N F R E Q U E N C I E S IN L I Q U I D S .
M i c h a e l M c C l i n t o c k , D. A. J e n n i n g s , N a t i o n a l B u r e a u of
S t a n d a r d s , a n d M a s a t a k a M i z u s h i m a , U n i v e r s i t y of C o l o r a d o .
FRIDAY,
June 23, 2:00 p . m .
Session FD
PLASMA PHYSICS;
E X P E R I M E N T A L III - G E N E R A L
E X P E R I M E N T A L AND DIAGNOSTICS
M . A. B a c h y n s k i , C h a i r m a n
McLennan
203
FD
1.
R A D I A T I O N S C A T T E R BY M A G N E T I C F L U C T U A T I O N S IN A
P L A S M A . W. B . T h o m p s o n , U n i v e r s i t y of C a l i f o r n i a , S a n D i e g o .
FD
2.
C O N T R O L L E D LANDAU DAMPING O F ION-ACOUSTIC WAVES.
I g o r A l e x e f f , W. D . J o n e s , O a k R i d g e N a t i o n a l L a b .
FD
3.
A L K A L I M E T A L P U R I F I C A T I O N BY P R E F E R E N T I A L C O N T A C T
I O N I Z A T I O N IN A Q U I E S C E N T M A G N E T O - P L A S M A D E V I C E .
V. L . G r a n a t s t e i n , P . H. S c h m i d t , B e l l T e l e p h o n e L a b o r a t o r i e s ,
and B. J . E a s t l u n d and R. F . L e h e n y , C o l u m b i a U n i v e r s i t y .
FD
4.
E X C I T A T I O N O F LONGITUDINAL WAVES NEAR E L E C T R O N
C Y C L O T R O N H A R M O N I C S . S. G r u b e r , S p e r r y R a n d R e s e a r c h
C e n t e r , G . B e k e f i , M . I. T .
FD
5.
W A V E - W A V E I N T E R A C T I O N WITHIN A T U R B U L E N T PLASMA.
N. C . J e n , J . C. C a t a l s o a n d G. I. K e n t , C i t y U n i v e r s i t y of N e w
York.
FD
6.
R E S O N A N T N O N - L I N E A R ION H E A T I N G IN A M A G N E T O P L A S M A .
P . J a y a s i m h a , U n i v e r s i t y of C a l i f o r n i a , S a n D i e g o .
FD
7.
N O N L I N E A R E F F E C T S IN B E A M - P L A S M A I N T E R A C T I O N S .
J o h n R . Apel, Johns Hopkins University.
- 67 -
FD
8.
E L E C T R O N - HOLE PLASMA DENSITY MEASUREMENTS.
W e n S. C h e n , B e t s y A n c k e r - J o h n s o n , B o e i n g S c i e n t i f i c R e s e a r c h
L a b s . , a n d U n i v e r s i t y of W a s h i n g t o n .
FD
9.
A R E T R A C T I N G P E D E S T A L WHICH F U R N I S H E S A SINGLE SOLID
T A R G E T F O R U S E IN C R E A T I N G P L A S M A S BY L A S E R I R R A D I A T I O N . J . L . P a c k , T . V. G e o r g e , A. G. E n g e l h a r d t , W e s t i n g h o u s e
Research.
F D 10.
PLASMA P E N E T R A T I O N THROUGH A MAGNETIC DIPOLE
V. O. J e n s e n , G e n e r a l D y n a m i c s C o r p .
F D 11.
C U R R E N T SHEATH RESISTANCE M E A S U R E M E N T S AND A
DYNAMICAL STUDY O F THE DENSE P L A S M A FOCUS. P. J. B o t t o m s ,
R . M . H e n s o n , J . W. M a t h e r , L o s A l a m o s S c i e n t i f i c L a b o r a t o r y .
F D 12.
STUDY O F A TOROIDAL RESONATOR FOR P L A S M A DIAGNOSTICS
M . S i c h a , G. G. C l o u t i e r , U n i v e r s i t y of M o n t r e a l .
F D 13.
R E F L E C T I O N S O F N A N O S E C O N D P U L S E S F R O M AN I O N I Z I N G
S H O C K IN S H O C K T U B E S T U D I E S . J . L . M i l l s , S. E . L o n g o ,
Y. J o S e t o , T u l a n e U n i v e r s i t y .
FRIDAY,
FIELD.
J u n e 23, 2:00 p . m .
Session F E
NUCLEAR REACTIONS V
M . A. P r e s t o n , C h a i r m a n
Lash Miller
159
FE
1.
( d . p ) S T R I P P I N G R E A C T I O N S ON T H E B A R I U M I S O T O P E S .
D. v o n E h r e n s t e i n , G. C . M o r r i s o n , J . A. N o l e n , J r . , a n d
N. W i l l i a m s , A r g o n n e N a t i o n a l L a b .
FE
2.
I S O B A R I C A N A L O G S T A T E S IN T H E B A R I U M I S O T O P E S .
G. C . M o r r i s o n , J . A . N o l e n , J r . a n d D. v o n E h r e n s t e i n ,
National Lab.
FE
3.
RELATIVE INTENSITIES OF THE L - S H E L L INTERNAL CONVERSION L I N E S O F P U R E M l ( 1 - <
> O - ) TRANSITIONS.
W. G e l l e t l y a n d J . S. G e i g e r , C R N L - A t o m i c E n e r g y of C a n a d a
Limited.
FE
4.
DECAY O F N d 1 4 7 .
Manitoba.
M . J . C a n t y a n d R . D. C o n n o r ,
N. W i l l i a m s ,
Argonne
U n i v e r s i t y of
- 68 -
FE
5.
144
T H E DECAY O F P a
. S. S a n t h a n a m ,
P. P. Webb, R C A L a b o r a t o r i e s .
FE
6.
DECAY O F
FE
7.
T H E K = 2 O C T U P O L E V I B R A T I O N A L S T A T E IN
D. E . N e l s o n , M c M a s t e r U n i v e r s i t y .
FE
8.
G A M M A - G A M M A D I R E C T I O N A L C O R R E L A T I O N S IN T H E D E C A Y
O F Y b 1 6 9 . A. J . B e c k e r , R . M. S t e f f e n , P u r d u e U n i v e r s i t y .
FE
9.
155
Sm.
Loyola College,
Z. Sujkowski, J. Ungrin, M c M a s t e r
187
A S T U D Y O F T H E T R A N S I T I O N S IN
Re.
J . D. M a c A r t h u r , Q u e e n ' s U n i v e r s i t y .
193
Os.
l66
E . A.
Er.
Montreal,
University.
D. C .
Burke,
Heighway,
F E 10.
THE DECAY O F
University.
R . H. P r i c e , M . W. J o h n s ,
McMaster
F E 11.
NEW S H O R T - L I V E D N E U T R O N - D E F I C I E N T PLATINUM ISOMERS.
I. A. F r a s e r , R . B. M o o r e , M c G i l l U n i v e r s i t y .
F E 12.
S T U D Y O F T H E I N T E R N A L C O N V E R S I O N P R O C E S S IN P b 2 0 ? .
S. I . H. R i z v i a n d S. K. S e n , U n i v e r s i t y of M a n i t o b a .
F E 13.
DECAY O F Th
Manitoba.
F E 14.
DECAY O F Ra
Manitoba.
227
.
R . D. C o n n o r ,
W. F . D a v i d s o n ,
U n i v e r s i t y of
.
W. F . D a v i d s o n , R . D. C o n n o r , U n i v e r s i t y of
223
FRIDAY,
J u n e 23, 2:00 p . m .
Session F F
T H E O R E T I C A L AND G E N E R A L PHYSICS
R. E. Pugh, C h a i r m a n
Ramsey
110
FF
1.
J W K B - A P P R O A C H T O S C A L A R P A R T I C L E S O L U T I O N S IN F L A T G R A V I T A T I O N A L T H E O R Y . H. J . E f i n g e r , J . R e i n f e l d s ,
U n i v e r s i t y of G e o r g i a .
FF
2.
R O T A T I N G BODIES AND T H E KERR M E T R I C .
Yale University.
FF
3.
RADIATION AND THE C L A S S I C A L E L E C T R O N .
A. F . C a m b r i d g e R e s e a r c h L a b o r a t o r i e s .
J. M.
R . G.
Wrig
Cohen,
Newburgh,
- 69 -
FF
4.
P H O T O N N U M B E R C A U S E D BY A C L A S S I C A L
O. B u n e m a n , S t a n f o r d U n i v e r s i t y .
TRANSMITTER.
FF
5.
M A C H ' S P R I N C I P L E IN T H E S I M P L E T H E O R Y O F G R A V I T A T I O N .
J . C . W. S c o t t , D e f e n c e R e s e a r c h T e l e c o m m u n c a t i o n s E s t a b l i s h m e n t .
FF
6.
S T R O N G C O U P L I N G L I M I T O F P O T E N T I A L T H E O R Y . W. M .
U. S. N a v a l O r d n a n c e L a b a n d B a r - I l l a n U n i v e r s i t y , I s r a e l .
A h i e z e r Shaki, B a r - I l l a n University, I s r a e l .
FF
7.
E L E C T R O M A G N E T I C T H E O R Y IN A N A F F I N E S P A C E W I T H
METRIC.
L . A. S m i t h , R o y a l M i l i t a r y C o l l e g e of C a n a d a .
FF
8.
P A R T I A L I N T E R F E R E N C E AND ATOMIC DISTRIBUTION FUNCTION
O F L I Q U I D S I L V E R - T I N A L L O Y S . N. C . H a i d e r a n d C . N. J .
Wagner, Yale University.
FF
9.
B R I L L O U I N S C A T T E R I N G IN C O z N E A R I T S C R I T I C A L P O I N T .
R . W. G a m m o n , H. L . S w i n n e y a n d H. Z . C u m m i n s , T h e J o h n s
Hopkins University.
Frank,
F F 10.
C O N S E R V A T I O N L A W S IN C O S M O L O G Y A N D B I O L O G Y .
P . W. N e u r a t h , T u f t s - N e w E n g l a n d M e d i c a l C e n t e r .
F F 11.
C O N T R O L AND COMMUNICATION DUE TO COMPARISON O F A
SYSTEM S U P P L Y I N G I M P U L S E ENERGY TO A SYSTEM WITH
ORDINARY CONTINUOUS ENERGY O U T P U T .
T. H i g i e r , B o g s a t
Corp.
F F 12.
W E S T O N AND A R G O N N E ZGS A C C E L E R A T O R S W I L L C O N F I R M
T H A T N* 324 5 A N D " P R O T O N - F O R C E S " A R E O N L Y D I F F E R E N T
S T E A D Y - S T A T E S O F T H E S A M E T R I O N P R O T O D Y N M I C S Y M M E T R Y.
J . G. B a r r e d o , C S I C .
F F 13.
N*3245 S U P E R C O N D U C T I V I T Y , RNA AND BIOPHYSICS " E L E M E N T A R Y
P A R T I C L E S " PARTICULAR CASES O F CHRONOSUPERCONDUCTIVITY.
J . G. B a r r e d o , C S I C .
- 70 -
F R I D A Y , J u n e 23, 2:00 p . m .
Session FC
R E L A X A T I O N E F F E C T S , ESR
A N D NMR
L. K r a u s e , C h a i r m a n
R a m s e y Wright
117
FC
1.
A T T E N U A T I O N O F A L K A L I B E A M S BY M O L E C U L A R I O D I N E .
J . A. D e l i a V a l l e , P . W. G a s h , T . I. M o r a n and E . P o l l a c k ,
U n i v e r s i t y of C o n n e c t i c u t .
FG
2.
Q U E N C H I N G O F SODIUM R E S O N A N C E R A D I A T I O N BY I N E R T
G A S E S . B. P . K i b b l e , G, C o p l e y a n d L. K r a u s e , U n i v e r s i t y of
Windsor.
FG
3.
3 2 P 1 / 2 - - - 3 2 p 3 / 2 MIXING IN SODIUM I N D U C E D BY C O L L I S I O N
WITH I N E R T GAS A T O M S . J o h n P i t r e , F . S. C. a n d L. K r a u s e ,
U n i v e r s i t y of W i n d s o r .
FG
4.
S E L F - B R O A D E N I N G O F CESIUM RESONANCE LINES.
A. V. P h e l p s , W e s t i n g h o u s e R e s e a r c h .
FG
5.
P R E S S U R E AND T E M P E R A T U R E D E P E N D E N C E O F THE LINES H I F T A N D L I N E W I D T H O F T H E Q ( 1 ) V I B R A T I O N A L L I N E IN
H Y D R O G E N GAS. P . L a l l e m a n d a n d P . S i m o v a , H a r v a r d U n i v e r s i t y .
FG
6.
MICROWAVE STUDIES O F COLLISION-INDUCED TRANSITIONS
B E T W E E N R O T A T I O N A L L E V E L S O F AMMONIA. T a k e s h i Oka,
N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a .
FG
7.
D I E L E C T R I C R E L A X A T I O N T I M E S IN N E A R L Y S P H E R I C A L
M O L E C U L E S . A b h a i M a n s i n g h , D. B. M c L a y , Q u e e n ' s U n i v e r s i t y .
FG
8.
THE D I E L E C T R I C CONSTANT O F BROMINE AT MICROWAVE
F R E Q U E N C I E S . I. R. D a g g , C. E . R e e s o r , U n i v e r s i t y of W a t e r l o o .
FG
9.
C O M P U T E R A N A L Y S I S O F NMR P O L Y C R Y S T A L L I N E L I N E S H A P E S
EXHIBITING ANISOTROPIC CHEMICAL SHIFT E F F E C T S .
J. F . B a u g h e r , P. C. T a y l o r , T. Oja and P. J. B r a y , B r o w n
University.
C. L.
Chen,
F G 10.
V 5 1 NMR IN V A N A D A T E G L A S S E S . F . R . L a n d s b e r g e r ,
J . F . B a u g h e r , T . O j a and P . J. B r a y , B r o w n U n i v e r s i t y .
F G 11.
P R O T O N S P I N L A T T I C E R E L A X A T I O N M E A S U R E M E N T S IN
G A S E O U S HC1, H B r AND HI. E . T w a r d , R . L . A r m s t r o n g , U n i v e r s i t y
of T o r o n t o .
- 71 -
F G 12.
T H E E F F E C T O F O X Y G E N ON T H E F R E E R A D I C A L S F O R M E D
IN P E R I O D A T E L I C N I N BY P Y R O L Y S I S . A. J . N a n a s s y , A. V y a s ,
D e p a r t m e n t of F o r e s t r y , C a n a d a .
F G 13.
C O M P U T E R S I M U L A T I O N O F E S R S P E C T R A O B S E R V E D IN
K 2 B 2 0 4 - K 2 C 0 3 C E R A M I C S . P . C . T a y l o r , D. L . G r i s c o m
and P. J, B r a y , Brown University.
F G 14.
E P R O F F R E E R A D I C A L S ON P O R O U S GLASS S U R F A C E S .
M i n o r u F u j i m o t o , M . S h i m i z u a n d H. D. G e s s e r , U n i v e r s i t y of
Manitoba.
FRIDAY,
J u n e 23, 2:00 p . m .
Session FH
FH
1.
SUPERCONDUCTIVITY AND
TUNNELING
K. M a k i , C h a i r m a n
McLennan
134
T E M P E R A T U R E D E P E N D E N C E O F T H E E N E R G Y G A P IN
A 1 - A 1 2 0 3 - A 1 T U N N E L J U N C T I O N S . B. L . B l a c k f o r d , R . H.
Dalhousie University.
March,
FH
2.
TRANSPORT PROPERTIES OF TWO-BAND SUPERCONDUCTING
A L L O Y S . A . G r i f f i n , U n i v e r s i t y of T o r o n t o a n d K. M a k i ,
U n i v e r s i t y of C a l i f o r n i a , S a n D i e g o .
FH
3.
MICROWAVE P R O P E R T I E S OF SUPERCONDUCTIVITY INDUCED
BY P R O X I M I T Y E F F E C T S . G a s t o n F i s c h e r , R u d o l f K l e i n ,
L a b o r a t o r i e s R C A Ltd. , Z u r i c h , Switzerland.
FH
4.
C R I T I C A L C U R R E N T D E N S I T I E S IN S Y N T H E T I C H I G H - F I E L D
SUPERCONDUCTORS.
J . H. P . W a t s o n , C o r n i n g G l a s s W o r k s .
FH
5.
REVERSIBLE SUPERCONDUCTING MAGNETS.
Ferranti- Packard.
FH
6.
U P P E R C R I T I C A L F I E L D O F S U P E R C O N D U C T I N G TIN A N D L E A D
F I L M S W I T H V A R Y I N G D E G R E E S O F D I S O R D E R . R i c h a r d W. B r o w n ,
U. S. N a v a l O r d n a n c e L a b . , a n d R o l f e E . G l o v e r III, U n i v e r s i t y of
Maryland.
D. L .
Atherton,
- 72 -
FH
7.
S U P E R C O N D U C T I V I T Y IN T H E T c - V S Y S T E M . S. T . S e k u l a ,
R . H. K e r n o h a n a n d C . C . K o c h , O a k R i d g e N a t i o n a l L a b .
FH
8.
THE ENERGY GAP OF SUPERCONDUCTING
D. R . B o s o m w o r t h , R C A L a b o r a t o r i e s .
FH
9.
E L E C T R O N T U N N E L I N G M E A S U R E M E N T S ON P b N E A R T H E
TRANSITION T E M P E R A T U R E .
J . P . F r a n c k , W. J . K e e l e r ,
U n i v e r s i t y of A l b e r t a .
Nb^n.
F H 10.
M E T A L - I N S U L A T O R - S E M I C O N D U C T O R T U N N E L I N G AS A BASIS
F O R D I G I T A L T R A N S D U C E R A C T I O N . W. H. H a r t w i g , U n i v e r s i t y
of T e x a s .
F H 11.
I N S T A B I L I T I E S IN A 1 - A 1 2 0 3 - A 1 T U N N E L J U N C T I O N S .
L . Y. W e i , U n i v e r s i t y of W a t e r l o o .
F H 12.
T H E R M A L H Y S T E R E S I S IN T H I N F I L M T U N N E L J U N C T I O N S .
R . H. M a r c h , B. L . B l a c k f o r d , D a l h o u s i e U n i v e r s i t y .
FRIDAY,
M.
Kuhn,
J u n e 23, 2:00 p . m .
Session FI
MAGNETISM AND F E R R O E L E C T R I C S
G. S h i r a n e , C h a i r m a n
Lash Miller
161
FI
1.
MAGNETIC BREAKDOWN OF ANTIFERROMAGNETIC ENERGY
G A P S IN C H R O M I U M . A. J . A r k o , J . A. M a r c u s , N o r t h w e s t e r n
U n i v e r s i t y a n d W. A. R e e d , B e l l T e l e p h o n e L a b o r a t o r i e s .
FI
2.
F E R R O M A G N E T I C D O M A I N S IN H E M A T I T E S I N G L E C R Y S T A L S .
J . A. E a t o n a n d A. H. M o r r i s h , U n i v e r s i t y of M a n i t o b a .
FI
3.
MAGNETIZATION MEASUREMENTS O F P U R E AND DOPED
a - F e ^ O j . C . W. S e a r l e a n d J . D. B e a n , U n i v e r s i t y of M a n i t o b a .
FI
4.
HIGH F I E L D P R O P E R T I E S O F Dy, Ho, E r , Tb AND Gd.
S. F o n e r , M . I. T . , J . J . R h y n e , U . S . N a v a l O r d n a n c e L a b . ,
E . J . M c N i f f , J r . a n d R . D o c l o , M . I. T .
FI
5.
S H A R P O P T I C A L A B S O R P T I O N L I N E S IN A N T I F E R R O M A G N E T I C
Cr^O-j. J. P. van der Ziel, Bell Telephone L a b o r a t o r i e s .
- 73 -
FI
6.
C A T I O N D I S T R I B U T I O N IN O C T A H E D R A L A N D T E T R A H E D R A L
S I T E S O F S O M E I R O N S P I N E L S . F . v a n d e r W o u d e , G. A.
S a w a t z k y a n d A. H. M o r r i s h , U n i v e r s i t y of M a n i t o b a .
FI
7.
LOW T E M P E R A T U R E S U S C E P T I B I L I T Y AND M A G N E T O R E S I S T I V I T Y IN C O P P E R A L L O Y S N O M I N A L L Y C O N T A I N I N G
0 . 0 1 T O 0. 10 A T O M I C F e + . F . T . H e d g c o c k , T . R a u d o r f a n d
R. Szmidt, McGill U n i v e r s i t y .
FI
8.
T e - 1 2 5 M A G N E T I C H Y P E R F I N E S T R U C T U R E IN T H E F E R R O MAGNETIC SPINEL CuCr2Te4.
J . F . U l l r i c h , D. H. V i n c e n t ,
U n i v e r s i t y of M i c h i g a n .
FI
9.
S P E C I F I C H E A T STUDY O F THE M A G N E T I C PHASE DIACRAMS
O F C s 2 M n C 1 . 2 H . O . N. D. L o v e , J . N. M c E l e a r n e y a n d
H. F o r s t a t , M i c h i g a n S t a t e U n i v e r s i t y .
F I 10.
N E U T R O N D I F F R A C T I O N S T U D I E S O F C H R O M I U M IN F I E L D S
T O 27 K I L O G A U S S . A. A r r o t t , S. A. W e r n e r , F o r d M o t o r
Scientific Lab. , and M. Atoji, Argonne National Lab.
F I 11.
E L E C T R I C A L RESISTIVITY OF TITANIUM-CHROMIUM
C . H. C h i u , S. R . B a i g , D a l h o u s i e U n i v e r s i t y .
F I 12.
D E U T E R O N R E L A X A T I O N T I M E S IN F E R R O E L E C T R I C A M M O N I U M
S U L P H A T E . M . M . P i n t a r , D. W. K y d o n a n d H. E . P e t c h ,
McMaster University.
F I 13.
ELECTROSTRICTION.
F I 14.
M O L E C U L A R R E O R I E N T A T I O N IN F E R R O E L E C T R I C L I T H I U M
H Y D R A Z I N I U M S U L P H A T E . H. E . P e t c h , W. D. M a c C l e m e n t
and M. M. P i n t a r , M c M a s t e r U n i v e r s i t y .
FRIDAY,
1.
U n i v e r s i t y of W a t e r l o o .
J u n e 23, 2:00 p . m .
Session F J
FJ
J. Grindlay,
ALLOYS.
H E A L T H P H Y S I C S S Y M P O S I U M (B)
O P E R A T I O N A L H E A L T H PHYSICS
P . M. B i r d , C h a i r m a n
Lash Miller
158
R A D I A T I O N S A F E T Y IN T H E L I N A C L A B O R A T O R Y O F T H E
U N I V E R S I T Y O F T O R O N T O . J . H. A i t k e n , E . W. H o r r i g a n ,
J . W. H u n t a n d K. G. M c N e i l l , U n i v e r s i t y of T o r o n t o .
- 74 -
FJ
2.
L I M I T A T I O N S ON T H E E V A L U A T I O N O F SHIELDING P R O T E C T I O N
AGAINST GAMMA-SOURCES AT AN I N T E R F A C E . C. Clifford,
Defense Research Board.
FJ
3.
R A D I A T I O N S U R V E Y S ON A N D A B O U T X - R A Y M A C H I N E S
L O C A T E D IN M A N I T O B A H O S P I T A L S . E . M . C a m p b e l l , M a n i t o b a
C a n c e r T r e a t m e n t and R e s e a r c h Foundation.
RADIOBIOLOGY
H. B. N e w c o m b e , C h a i r m a n
Lash Miller
158
FJ
4.
H U M A N D O S E E F F E C T S T U D I E S A N D F U T U R E T R E N D S IN
T H E S E S T U D I E S . J . D. A b b o t t , R a d i a t i o n P r o t e c t i o n D i v i s i o n .
FJ
5.
DELAYED DEATH O F IRRADIATED YEAST CELLS.
Chalk River Nuclear Laboratories.
FJ
6.
D E L A Y E D D E A T H O F H E M O P O I E T I C TISSUE A F T E R IRRADIATION AND THE MECHANISM O F S T E M C E L L R E P A I R . J. E. Till
a n d E . A. M c C u l l o c h , U n i v e r s i t y of T o r o n t o .
FJ
7.
T H E F E A S I B I L I T Y O F A NEW P R O C E D U R E FOR B I O L O G I C A L
D O S I M E T R Y . J . F . W h i t f i e l d , N a t i o n a l R e s e a r c h C o u n c i l of C a n a d a .
FJ
8.
C Y T O G E N E T I C S IN T H E A S S E S S M E N T O F C H R O N I C H U M A N
R A D I A T I O N E X P O S U R E F R O M I N T E R N A L E M I T T E R S . M. R .
Quastel, Radiation Protection Division.
FJ
9.
C H E M I C A L C O M P O S I T I O N O F A L G I N A E IN R E L A T I O N T O I T S
A F F I N I T Y T O R A D I O A C T I V E S T R O N T I U M . Y. T a n k a ,
R . W a l d r o n - E d w a r d a n d S. C . S k o r y n a , M c G i l l U n i v e r s i t y .
FRIDAY,
A. P .
James,
J u n e 23, 2:00 p . m .
Session FK
»
POSTDEADLINE PAPERS
McLennan
134
- 75 -
F R I D A Y , J u n e 23, 2 : 0 0 p . m .
Session F L
E A R T H P H Y S I C S IV
G. D. G a r l a n d , C h a i r m a n
Lash Miller
162
FL
1.
G E O L O G I C A L I N T E R P R E T A T I O N O F ISOTOPIC AGE DATA.
C . T . H a r p e r , U n i v e r s i t y of T o r o n t o .
FL
2.
G E O P H Y S I C A L INVESTIGATION O F THE E A R T H ' S CRUST AND
U P P E R M A N T L E IN A L B E R T A . E . R . K a n a s e w i c h a n d
R . M. C l o w e s , U n i v e r s i t y of A l b e r t a .
FL
3.
A R E V I E W O F G E O P H Y S I C A L F I N D I N G S IN T H E L A K E S U P E R I O R
R E G I O N . H. C. H a l l s and G. F . W e s t , U n i v e r s i t y of T o r o n t o .
FL
4.
A PRELIMINARY INTERPRETATION OF THE YELLOWKNIFE
C R U S T A L E X P E R I M E N T . K. C. B a r r a n d M. J . B e r r y ,
Dominion Observatory.
FL
5.
A C R U S T - M A N T L E P R O F I L E F R O M M O U L D B A Y , N. W. T . ,
C A N A D A T O T U C S O N , A R I Z O N A , U. S. A. K. P e c a n d
A. J . W i c k e n s , D o m i n i o n O b s e r v a t o r y .
FL
6.
A RAY T H E O R Y IN I N H O M O G E N E O U S E L A S T I C M E D I A .
Ravi Ravindra, Dalhousie University.
FL
7.
ON M A L K U S ' P R E C E S S I O N - D R I V E N G E O M A G N E T I C DYNAMO.
M . G. R o c h e s t e r , U n i v e r s i t y of W a t e r l o o , D. E . S m y l i e a n d
K. F . C h o n g , U n i v e r s i t y of W e s t e r n O n t a r i o .
FL
8.
NUMERICAL F I L T E R S FOR THE EXTRACTION O F DISPERSED
S U R F A C E W A V E S F R O M S E I S M O G R A M S . G. C l a r k e , U n i v e r s i t y
of T o r o n t o .
FL
9.
T H E R E Q U I R E M E N T F O R AN I N T E R N A T I O N A L R E F E R E N C E
MAGNETIC FIELD. E. Dawson, Dominion Observatory.
F L 10.
T H E R O L E O F T H E I N V A R I A B L E P E N D U L U M IN G R A V I T Y
M E A S U R E M E N T S . H. D. V a l l i a n t , D o m i n i o n O b s e r v a t o r y .
FL11.
F I E L D USE O F D I G I T A L D A T A P R O C E S S O R S .
B e d f o r d I n s t i t u t e of O c e a n o g r a p h y .
B. D.
Loncarevic,
- 76 -
ABSTRACTS
A b s t r a c t s of m o s t of t h e p a p e r s p r e s e n t e d a t
t h e T r i p a r t i t e M e e t i n g a r e to b e f o u n d i n t h e B u l l e t i n
of T h e A m e r i c a n P h y s i c a l S o c i e t y ,
at Toronto.
1967 J u l y M e e t i n g
A b s t r a c t s of t h e p a p e r s p r e s e n t e d a t
t h e m e e t i n g s of t h e C. A. P . E a r t h P h y s i c s D i v i s i o n
a n d s o m e of t h o s e p r e s e n t e d a t t h e m e e t i n g of t h e
Medical and Biological P h y s i c s Division a r e
here.
reproduced
- 77-
S e s s i o n CK
THURSDAY,
J U N E 22, 9:00 a . m .
E A R T H PHYSICS I
J. A. J a c o b s ,
CK
1.
Chairman
THE CONTINENTAL MARGIN OF E A S T E R N CANADA:
NOVA SCOTIA T O N A R E S STRAITS.
D. L . B a r r e t t , G . N . E w i n g , B . D. L o n c a r e v i c , K. S. M a n c h e s t e r ,
B e d f o r d I n s t i t u t e of O c e a n o g r a p h y , a n d M . J . K e e n , I n s t i t u t e of
Oceanography, Dalhousie University.
A r e v i e w w i l l b e p r e s e n t e d t o g e o p h y s i c a l s t u d i e s of
t h e e a s t e r n c o n t i n e n t a l m a r g i n of C a n a d a f r o m N o v a S c o t i a t o t h e
N a r e s S t r a i t s . S e i s m i c s t u d i e s of t h e A p p l a c h i a n S y s t e m s h o w
that its d e e p e r s t r u c t u r e is c o m p l i c a t e d , and r e l a t e d to the s u r f a c e
geology. Its boundary with the G r e n v i l l e P r o v i n c e is a c c o m p a n i e d
b y c h a n g e s i n t h e d e e p e r p a r t of t h e c r u s t a n d i n t h e m a n t l e .
It
s e e m s unlikely that the Laurentian Channel is a two-sided rift system.
S e i s m i c , g r a v i t y and m a g n e t i c field o b s e r v a t i o n s suggest the m a n t l e
beneath the continent i s m o r e d e n s e and p e r h a p s c o o l e r than the m a n t l e
beneath the ocean b a s i s . T h e r e is no evidence that a m i d - o c e a n ridge
u n d e r l i e s t h e c e n t r a l p a r t of B a f f i n B a y : m a g n e t i c a n o m a l i e s i n t h e
B a y a r e r e s t r i c t e d to the shelfs. M a g n e t i c field m e a s u r e m e n t s suggest
t h a t a t h i c k s e d i m e n t a r y s e q u e n c e u n d e r l i e s t h e n o r t h e r n p a r t of t h e B a y
w h e r e t h e g r a d i e n t of t h e c o n t i n e n t a l s l o p e i s g e n t l e . T h e y a l s o s h o w
that C r e t a c e o u s and T e r t i a r y lavas occur i r r e g u l a r l y f r o m w e s t e r n
G r e e n l a n d t o e a s t e r n B a f f i n I s l a n d a n d t h a t t h e y a r e in l a r g e p a r t
r e v e r s e l y magnetized. T h e r e is little evidence for a l a r g e fault system
through the N a r e s Straits. T h e r e a r e , however, well defined fault
s y s t e m s in J o n e s Sound and L a n c a s t e r Sound.
CK
2.
GEOPHYSICAL STUDIES OF THE CONTINENTAL MARGIN
NORTHEAST OF NEWFOUNDLAND.
Bruce Fenwick,
Dalhousie University.
S t u d i e s of a e r o m a g n e t i c m e a s u r e m e n t s m a d e s o m e y e a r s
a g o b y t h e D e p a r t m e n t of M i n e s a n d T e c h n i c a l S u r v e y s a n d by t h e U. S.
H y d r o g r a p h i e O f f i c e r e v e a l e d l a r g e a n o m a l i e s in t h e m a g n e t i c f i e l d
o v e r t h e c o n t i n e n t a l m a r g i n n o r t h e a s t of N e w f o u n d l a n d .
Consequently,
s e i s m i c a n d m a g n e t i c e x p e r i m e n t s w e r e u n d e r t a k e n i n 1966 f r o m
- 78 -
C . S. S. HUDSON and M. V. T H E T A . F o u r s e i s m i c r e f r a c t i o n
p r o f i l e s w e r e e s t a b l i s h e d p a r a l l e l t o t h e e d g e of t h e c o n t i n e n t a l
s h e l f . T h e t h i c k n e s s of t h e c r u s t v a r i e s f r o m a p p r o x i m a t e l y
30 k m b e n e a t h t h e e d g e of t h e s h e l f , w i t h a m i n i m u m v a l u e of 17
k m b e n e a t h t h e u p p e r p a r t of t h e s l o p e , t o v a l u e s of a p p r o x i m a t e l y
10 k m b e n e a t h t h e f o o t of t h e s l o p e a n d b e n e a t h t h e o c e a n b a s i n
p r o p e r . The s t r u c t u r e beneath t h e s e two m o s t s e a w a r d p r o f i l e s
r e s e m b l e s i n s o m e r e s p e c t s t h a t b e n e a t h t h e c e n t r a l p a r t of t h e
Labrador Sea. Continental s t r u c t u r e does not extend seaward
b e y o n d t h e l o w e r p a r t of t h e c o n t i n e n t a l s l o p e . A m a g n e t i c s u r v e y
s h o w e d t h a t a r e g i o n of l i n e a r m a g n e t i c a n o m a l i e s s t r i k e s n o r t h w e s t t o s o u t h e a s t , w i t h l a r g e p o s i t i v e a n o m a l i e s of u p t o 1200 g a m m a s
m a g n i t u d e o v e r t h e s l o p e , a n d n e g a t i v e a n o m a l i e s o v e r t h e f o o t of t h e
s l o p e . T h i s r e g i o n i s a p p r o x i m a t e l y 250 k m l o n g a n d t e n s of k i l o m e t e r s w i d e . O n e i n t e r p r e t a t i o n of t h e a n o m a l i e s s h o w s t h a t t h e y
could be p r o d u c e d by a thick m a g n e t i z e d continental p l a t e a g a i n s t
a t h i n m a g n e t i z e d o c e a n i c p l a t e . A n o m a l i e s of 2 0 0 0 g a m m a s a r e
s e e n o n t h e s h e l f n o r t h e a s t of t h e S t r a i t of B e l l e I s l e . T h e y s t r i k e
t o w a r d s n o r t h e a s t e r n Newfoundland, and could be due to l a r g e int r u s i v e b o d i e s of u l t r a b a s i c r o c k c l o s e t o t h e s e a - b o t t o m , o r c o u l d
r e f l e c t f a u l t i n g n e a r the shelf edge, in a n o r t h e a s t e r l y d i r e c t i o n .
CK
3.
MID-ATLANTIC RIDGE NEAR 45° NORTH
B . D. L o n c a r e v i c , B e d f o r d I n s t i t u t e of O c e a n o g r a p h y ,
Dartmouth.
D e t a i l e d s u r v e y s of t h e c r e s t h a v e b e e n e x t e n d e d t o
c o v e r a n a r e a of a l m o s t 3000 s q . m i . , f r o m t h e e a s t e r n f l a n k of t h e
M e d i a n V a l l e y 120 m i l e s w e s t w a r d . M e a s u r e m e n t s of t h e d e p t h ,
gravity a n o m a l y and total m a g n e t i c field w e r e m a d e along s u r v e y
l i n e s o n e m i l e a p a r t u s i n g 15 m o o r e d b u o y s f o r r e f e r e n c e .
The
c o l l e c t i o n f r o m 56 s t a t i o n s w o r k e d i n t h e a r e a i n c l u d e s o v e r 5, 0 0 0
p h o t o g r a p h s , 8 s e d i m e n t c o r e s (total c o r e length 8 , 4 2 2 c m . ) , and
7 r o c k d r e d g e s (145 h a n d s p e c i m e n s a n d b o u l d e r s ) .
T h e M e d i a n V a l l e y a n d t h e a s s o c i a t e d b e l t of l a r g e
p o s i t i v e m a g n e t i c a n o m a l i e s a r e continuous, well defined and s t r i k e
in d i r e c t i o n 019°. T h e R i f t M o u n t a i n s P r o v i n c e t o t h e w e s t i s o n l y
20 - 25 m i l e s w i d e . T h e a v e r a g e d e p t h i s 1200 f m s . w i t h a d o z e n
p e a k s r i s i n g a b o v e t h i s l e v e l . T h e l e a s t d e p t h i s on t h e e a s t e r n
f l a n k ( 3 9 5 f m . ). In t h e s o u t h e r n p a r t of t h e R i f t M o u n t a i n s , f i v e
linear magnetic anomalies parallel the Median Valley. This pattern
i s n o t s e e n i n t h e n o r t h e r n h a l f of t h e s u r v e y , e i t h e r b e c a u s e of t h e
i n t e r f e r e n c e of t h e a n o m a l i e s d u e t o l o c a l v o l c a n i s m o r b e c a u s e it
is absent.
- 79 -
T h e b o u n d a r y of t h e R i f t M o u n t a i n s i s t h e 1400 f m .
c o n t o u r . F u r t h e r w e s t t h e c h a r a c t e r of t h e t o p o g r a p h y c h a n g e s
with m o r e e x t e n s i v e s e d i m e n t a r y b a s i n s and v e r y elongated sea
m o u n t s s t r i k i n g w e s t of n o r t h . T h e r a n g e of m a g n e t i c a n o m a l y
a m p l i t u d e s i s s m a l l e r and l i n e a r p a t t e r n d i f f u s e d o r a b s e n t .
P h y s i c a l p r o p e r t i e s of d r e d g e d s a m p l e s w e r e m e a s u r e d
a s f o l l o w s : d r y b u l k d e n s i t y 2. 63 - 2. 85 g m / c m 3 , c o m p r e s s i o n a l
w a v e v e l o c i t y ( N T P ) 4. 82 - 5. 88 k m / s e c , r e m a n e n t m a g n e t i z a t i o n
0. 0 0 2 5 t o 0. 0 3 9 e m u / c m 3 . T h e l a s t v a l u e i s of s p e c i a l i n t e r e s t s i n c e
it i s m u c h h i g h e r t h a n p r e v i o u s l y r e p o r t e d v a l u e s . If t h e o b s e r v e d
i n c r e a s e of r e m a n e n t m a g n e t i z a t i o n w i t h d e p t h i s a g e n e r a l p r o p e r t y
of o c e a n i c b a s a l t s , t h e n i t i s p o s s i b l e t o e x p l a i n t h e o b s e r v e d p a t t e r n
of m a g n e t i c a n o m a l i e s w i t h o u t a r e f e r e n c e t o r e v e r s a l s of t h e m a g n e t i c
field.
C K 4.
D E E P SEA NAVIGATION WITH V L F RADIO TRANSMISSIONS
R . O. K u e h n e l , D a l h o u s i e U n i v e r s i t y , a n d B . D. L o n c a r e v i c ,
B e d f o r d I n s t i t u t e of O c e a n o g r a p h y , D a r t m o u t h , N. S.
Location is the m o s t important single p a r a m e t e r n e c e s s a r y
f o r e v a l u a t i o n of s c i e n t i f i c o b s e r v a t i o n s r e c o r d e d a t s e a . T w o n a v i g a t i o n a l a i d s w i t h w o r l d - w i d e c o v e r a g e a r e in t h e a d v a n c e d s t a g e of
d e v e l o p m e n t : i) V e r y L o w F r e q u e n c y r a d i o t r a n s m i s s i o n s a n d ii)
Radio t r a n s m i s s i o n s f r o m navigational satellites.
Experimental
i n v e s t i g a t i o n s of t h e f o r m e r h a v e b e e n in p r o g r e s s a t B I O s i n c e 1964.
U.S. Navy navigational pattern OMEGA was used for a quantitative
e v a l u a t i o n of V L F n a v i g a t i o n d u r i n g t h e H y d r o g r a p h i e s u r v e y of t h e
G r e a t B a n k of N e w f o u n d l a n d ( s u m m e r 1966). P a r t i c u l a r a t t e n t i o n w a s
paid to identifying and eliminating w h e n e v e r possible the inherent
e r r o r s d u e t o i n s t a b i l i t y of t h e p r o p a g a t i o n p a t h a n d e q u i p m e n t l i m i t ations. During the second investigation, fixes obtained with the
s y s t e m w e r e c o m p a r e d with a s t r o f i x e s over the s u r v e y a r e a over
t h e M i d - A t l a n t i c R i d g e . O n t h e b a s i s of t h e a n a l y s i s of t h e 1966 o b s e r v a t i o n s it a p p e a r s t h a t t h e s y s t e m c a n b e u s e d f o r t h e f o l l o w i n g a p p l i c a t i o n s : R a t h e r c r u d e c o n t i n u o u s n a v i g a t i o n w i t h a n a c c u r a c y of 2 - 3
m i l e s in a r e a s w h e r e n o o t h e r a i d s e x i s t ; a n d ii) a s n a v i g a t i o n a l
i n t e r p o l a t i o n o v e r a p e r i o d of a f e w h o u r s b e t w e e n a c c u r a t e f i x e s on
navigational satellite, moored buoys or prominent coastline features.
CK
5.
THE AGE OF THE STEENS MOUNTAIN GEOMAGNETIC
TRANSITION
A . B a k s i , D. Y o r k , U n i v e r s i t y 1 of T o r o n t o , a n d N . D.
Florida State University.
POLARITY
Watkins,
- 80 -
A d e t a i l e d K - A r s t u d y h a s b e e n c a r r i e d out on t h e
S t e e n s M o u n t a i n (Oregon) volcanic s e c t i o n in which i s r e c o r d e d a
p o l a r i t y t r a n s i t i o n of t h e E a r t h ' s m a g n e t i c f i e l d . A r e v e r s e d
polarity sequence is separated f r o m the younger n o r m a l polarity
l a v a s b y a s e r i e s of t r a n s i t i o n a l m a g n e t i c d i r e c t i o n s .
Nineteen
different c o r e s h a v e been dated, with n u m e r o u s duplicate a n a l y s e s ,
a n d t h e a g e of t h e g e o m a g n e t i c p o l a r i t y r e v e r s a l h a s b e e n f o u n d t o
b e 1 5 . 1 - 0. 3 m . y . w h e r e t h e u n c e r t a i n t y i n c l u d e s a l l o w a n c e f o r
s y s t e m a t i c e r r o r s . No c o r r e l a t i o n is o b s e r v a b l e b e t w e e n age and
p o t a s s i u m concentration. Although the p o t a s s i u m content v a r i e s
b y a f a c t o r of t w o a m o n g t h e c o r e s , t h e a g e r e m a i n s a c o n s t a n t .
P r e v i o u s K - A r w o r k e r s h a v e d a t e d t h e p o l a r i t y b o u n d a r i e s by
i n t e r p o l a t i o n : it i s s u g g e s t e d t h a t t h e p r e s e n t a p p r o a c h of d a t i n g
the actual polarity transition directly will yield m o r e a c c u r a t e
r e s u l t s i n t h e a g e r a n g e 5 t o 15 m . y. T h i s w i l l e n a b l e m o r e
s t r i n g e n t t e s t i n g of t h e o c e a n - f l o o r - s p r e a d i n g h y p o t h e s i s t o b e
c a r r i e d out.
CK
6.
PALAEOMAGNETISM O F LOWER P A L A E O Z O I C ROCKS FROM
NEWFOUNDLAND
P . S. R a o a n d E . R . D e u t s c h , M e m o r i a l U n i v e r s i t y of N e w f o u n d l a n d .
A n i n i t i a l p a l a e o m a g n e t i c s t u d y of r e l a t i v e l y f l a t lying b a s a l t s and a s s o c i a t e d s e d i m e n t s f r o m the L a b r a d o r Coast
( D e u t s c h a n d M u r t h y , r e p o r t a t 1966 C A P m e e t i n g ) h a s b e e n e x t e n d e d t o s i m i l a r r o c k s i n t h e C a n a d a B a y a r e a in t h e N o r t h e r n
P e n i n s u l a of N e w f o u n d l a n d . R e s u l t s of s t a b i l i t y t e s t s w i t h a l t e r n a t i n g field and t h e r m a l demagnetization a r e included. According to Clifford
(1965), t h e s i m i l a r i t i e s in l i t h o l o g y a n d s t r a t i g r a p h i e s e q u e n c e s u g g e s t
t h a t t h e r o c k s in t h e t w o r e g i o n s m a y h a v e o r i g i n a t e d a t t h e s a m e
time, probably during the lower C a m b r i a n . Some palaeomagnetic
r e s u l t s f r o m O r d o v i c i a n r o c k s in N o r t h - C e n t r a l N e w f o u n d l a n d a r e
also presented.
CK
7.
PALEOMAGNETISM OF U P P E R PALAEOZOIC FORMATIONS OF
THE MARITIMES
J. L. Roy, Dominion Observatory,
Ottawa.
Several formations
f r o m the M a r i t i m e s covering
m o s t of t h e U p p e r P a l a e o z o i c h a v e b e e n s a m p l e d . T h e r e s u l t s s h o u l d
g i v e a r e c o r d of P a l e o m a g n e t i c d a t a f r o m S i l u r i a n t o P e r m i a n .
The
p r e v i o u s North A m e r i c a n r e s u l t s f o r this p e r i o d a r e few and p r o v i d e
- 81 -
o n l y s p o t - r e a d i n g s . T h e m e a s u r e m e n t s a n d s t a b i l i t y t e s t s of
s i x f o r m a t i o n s f r o m t h e u p p e r p a r t of t h e p e r i o d c o n s i d e r e d h a v e
been c o m p l e t e d . T h e p r e l i m i n a r y data indicate that a s m a l l but
s i g n i f i c a n t (17°) p o l a r d r i f t , p r e v i o u s l y u n d e t e c t e d b e c a u s e of
insufficient data, o c c u r r e d f r o m the Upper M i s s i s s i p p i a n to L o w e r
P e r m i a n . T h e r e s u l t s a l s o s h o w t h a t t w o r e v e r s a l s of t h e e a r t h ' s
f i e l d h a v e t a k e n p l a c e in U p p e r M i s s i s s i p p i a n .
CK
8.
A S I M P L E M E T H O D F O R BUILDING ASTATIC AND PARASTATIC
MAGNETOMETERS
J . P . H o d y c h , U n i v e r s i t y of T o r o n t o .
D e t a i l s w i l l b e g i v e n on h o w t o c o n s t r u c t a s t a t i c a n d
p a r a s t a t i c m a g n e t o m e t e r s s i m p l y , w i t h c y l i n d e r s of t r a n s v e r s e l y
m a g n e t i z e d P l a t i n a x II. A l i g n i n g t h e m a g n e t s on a s t e e l r u l e h a s
b e e n f o u n d t o i m m e d i a t e l y g i v e a n a s t a t i c i s m of a b o u t 1 i n 100.
T h e p e r f o r m a n c e of s u c h m a g n e t o m e t e r s w i l l b e d e s c r i b e d .
CK
9.
I N V I T E D P A P E R : P R O G R E S S IN D I S C O V E R Y O F T H E
BEHAVIOR OF T H E CRUST AND U P P E R M A N T L E .
J . T . W i l s o n , U n i v e r s i t y of T o r o n t o .
RECENT
- 82 -
Session DJ
THURSDAY,
J U N E 2 2 , 2 : 0 0 p. m .
I N V I T E D P A P E R S O N C O M P U T E R S IN M E D I C A L P H Y S I C S
J. R. Cunningham,
DJ
1.
Chairman
T H E E F F E C T OF: F I E L D SHAPE, TISSUE INHOMOGENITIES
A N D B E A M P E N U M B R A ON C O M P U T E R C A L C U L A T E D D O S E
D I S T R I B U T I O N S IN T I S S U E , - C O B A L T - 6 0
G . H o l t , F . R i t t e r , a n d J . S. L a u g h l i n , M e m o r i a l H o s p i t a l f o r
C a n c e r a n d A l l i e d D i s e a s e s N e w Y o r k , N e w Y o r k 10021.
T h e d i s t o r t i o n of t h e r a d i a t i o n f i e l d i n t r o d u c e d b y
t h e p r e s e n c e of c o r k a n d a l u m i n u m h a s b e e n m e a s u r e d f o r d i f f e r e n t
g e o m e t r i e s in a t i s s u e e q u i v a l e n t p h a n t o m . T h e m a g n i t u d e " . * r o r s
i n t r o d u c e d i n t h e c o m p u t a t i o n s b a s e d on t w o c o m p u t e r m o d e l s of
p a t i e n t s i m u l a t i o n i s e v a l u a t e d . E x p e r i m e n t a l d a t a will be p r e s e n t e d
and a c o m p a r i s o n will be m a d e b e t w e e n c o m p u t e d and m e a s u r e d
doses.
DJ
2.
C A L C U L A T I O N O F T H R E E DIMENSIONAL ISODOSE CURVES
USING D E C R E M E N T L I N E S
M . D. P e t e r s o n , P . J . G i b b s , M . B . D a v i s , R . M .
a n d V. P . C o l l i n s .
Adams,
A m e t h o d i s p r e s e n t e d f o r c o m p u t e r c a l c u l a t i o n of
i s o d o s e c u r v e s in t h r e e d i m e n s i o n s . P l a n e s p e r p e n d i c u l a r , p a r a l l e l
and diagonal to the b e a m axis and cuts at any angle m a y be r e q u e s t e d
f o r a n y f i e l d s i z e . C a l c u l a t i o n s a r e m a d e by fitting a n e l l i p s e t o e a c h
d e c r e m e n t line a c r o s s the b e a m . C o m p u t e r calculations f r o m this
t h r e e d i m e n s i o n a l m a t r i x p r o d u c e i s o d o s e c u r v e s f o r r o t a t i o n and
f i x e d f i e l d t h e r a p y w h i c h m a y b e s u p e r i m p o s e d on A P , L a t e r a l a n d
t r a n s v e r s e localization films. This technic is particularly valuable
w h e n t r e a t m e n t f i e l d s e n c o m p a s s a r e a s of g r o s s a n a t o m i c v a r i a t i o n
and v a r y i n g t a r g e t to skin d i s t a n c e s .
- 83 -
DJ
3.
OPTIMIZATION OF E X T E R N A L RADIATION BEAMS FOR
THERAPY PLANNING
Tom Lewis Gallagher
T h e r e h a s b e e n a c o n s t a n t s t r i v i n g on t h e p a r t of
t h e r a d i o t h e r a p i s t t o i m p r o v e h i s t r e a t m e n t , b u t it h a s o n l y
b e e n r e c e n t l y t h a t a f o r m u l a t i o n of o p t i m i z a t i o n h a s b e e n p r o p o s e d
which q u a n t i f i e s s o m e p a r a m e t e r s in e x t e r n a l r a d i a t i o n b e a m t h e r a p y .
B e c a u s e of t h e c o m p l e x i t y of t h e s i m u l a t i o n of r a d i a t i o n b e a m s a n d
of p r a c t i c a l o p t i m i z a t i o n s c h e m e s , t h e c o m p u t e r i s a n e c e s s a r y t o o l .
A s c h e m e i s p r e s e n t e d f o r t h e m a x i m i z a t i o n of i n t e g r a l
d o s e i n a s p e c i f i e d t u m o r r e g i o n , s u b j e c t t o a s e t of c o n s t r a i n i n g
c o n d i t i o n s in t h e t o t a l t r e a t m e n t a r e a . O p t i m u m l e v e l s of s o u r c e
s t r e n g t h a r e o b t a i n e d w h i l e s e a r c h i n g f o r t h e l e v e l s of a n g l e of b e a m
i n c i d e n c e and wedge f i l t e r angle by a p e r t u r b a t i o n p r o c e d u r e .
Optimum plans a r e given for five anatomical regions,
and the r e s u l t s a r e c o m p a r e d with an initial c o n f i g u r a t i o n supplied
by the t h e r a p i s t s .
DJ
4.
SOME A P P L I C A T I O N S AND AN E V A L U A T I O N O F T H E USE O F
S C A T T E R - A I R R A T I O S IN T H E P R O D U C T I O N O F M U L T I F I E L D
AND ROTATION ISODOSE DISTRIBUTIONS
J . R. C u n n i n g h a m ,
The Ontario Cancer Institute,
Toronto,
Canada.
In a n e f f o r t t o s e p a r a t e l y c o n s i d e r t h e d o s e c o n t r i b u t i o n s
of p r i m a r y a n d s c a t t e r e d r a d i a t i o n i n a n a b s o r b i n g m e d i u m t h e a u t h o r
h a s p r e v i o u s l y i n t r o d u c e d t h e c o n c e p t of " s c a t t e r - a i r r a t i o " .
This
a p p r o a c h a l l o w s t h e c a l c u l a t i o n of d o s e d i s t r i b u t i o n s u n d e r v e r y
g e n e r a l i z e d c o n d i t i o n s w i t h o n l y a s i n g l e s e t of d a t a a s a s t a r t i n g
p o i n t . T h e p h y s i c a l a s s u m p t i o n s u n d e r l y i n g t h e u s e of s c a t t e r - a i r
r a t i o a r e e x a m i n e d b r i e f l y and c o m p a r i s o n is m a d e with " f i r s t
s c a t t e r " c o n s i d e r a t i o n s . A s a n e x a m p l e of t h e a p p l i c a t i o n of t h i s
a p p r o a c h , t h r e e d i m e n s i o n a l distributions for rotation with varying
field size and rotation speed a r e shown.
- 84 -
Session DL
THURSDAY,
J U N E 22, 2:00 p . m .
E A R T H P H Y S I C S II
J. E. Blanchard,
DL
1.
Chairman
M A G N E T I C D E E P SOUNDING AND L O C A L
A N O M A L I E S IN T H E E A R T H
CONDUCTIVITY
D. I. G o u g h a n d J . S. R e i t z e l , U n i v e r s i t y of A l b e r t a a n d
Southwest Center for Advanced Studies, Dallas, Texas.
A three-component recording magnetic variometer
h a s b e e n d e s i g n e d a n d t e s t e d , a n d r e c o r d s v a r i a t i o n s in t h e p e r i o d
range 1 m i n u t e to a few days with sensitivity b e t t e r than 1 g a m m a
(10"5 g a u s s ) . T h i s n e w i n s t r u m e n t c a n b e p r o d u c e d f o r a b o u t $1500
a n d i s b e i n g p r o d u c e d in s u f f i c i e n t q u a n t i t i e s , i n D a l l a s a n d E d m o n t o n ,
t o m a k e p o s s i b l e t h e s i m u l t a n e o u s o b s e r v a t i o n of n a t u r a l m a g n e t i c
v a r i a t i o n s a t 20 o r m o r e s t a t i o n s o v e r a n a r e a of t h e E a r t h ' s s u r f a c e .
T h i s s h o u l d l e a d t o i m p r o v e d s t u d i e s of l o c a l a n o m a l i e s of e l e c t r i c a l
c o n d u c t i v i t y a t d e p t h s of 6 0 0 k m . o r l e s s . S u c h a n o m a l i e s a r e of
interest mainly because they a r e v e r y probably associated with
temperature, through semiconduction mechanisms.
T h e p a p e r g i v e a b r i e f d e s c r i p t i o n of t h e n e w v a r i o m e t e r
and r e p o r t s an a n o m a l y in C o l o r a d o , n e a r the R o c k y M o u n t a i n f r o n t ,
d i s c o v e r e d d u r i n g t e s t s of e i g h t of t h e n e w i n s t r u m e n t s . M e t h o d s of
s e p a r a t i o n of t h e f i e l d s of e x t e r n a l a n d i n t e r n a l c u r r e n t s w i l l b e d i s c u s s e d , a n d a f i e l d p r o g r a m m e f o r t h e s u m m e r of 1967, w i t h a n a r r a y
of a b o u t 40 v a r i o m e t e r s , w i l l b e o u t l i n e d .
DL
2.
M A G N E T O T E L L U R I C S U R V E Y IN S O U T H E R N A L B E R T A
D. R a n k i n , U n i v e r s i t y of A l b e r t a .
M a g n e t o t e l l u r i c m e a s u r e m e n t s h a v e b e e n o b t a i n e d in t w o
t r a v e r s e s r u n n i n g a p p r o x i m a t e l y n o r t h s o u t h a n d e a s t w e s t in a n a r e a
of S o u t h e r n A l b e r t a w i t h r e l a t i v e l y c l o s e s p a c i n g b e t w e e n s t a t i o n s .
S i m u l t a n e o u s r e c o r d i n g s h a v e b e e n obtained at a fixed station n e a r
E d m o n t o n . T h e r e s u l t s of s p e c t r a l a n a l y s i s p r o v i d e t h e a p p a r e n t
r e s i s t i v i t y c u r v e s w h i c h a r e a n a l y z e d i n t e r m s of t h e l a y e r i n g s t r u c t u r e
at individual s t a t i o n s . T h e s t a t i o n t o station v a r i a t i o n s p r o v i d e the
- 85 -
basis for analyzing discontinuities within the layering.
DL
3.
INLAND, COASTAL AND OFFSHORE
MEASUREMENTS
S. P . S r i v a ^ t a v a ,
MAGNETOTELLURIC
B e d f o r d I n s t i t u t e of O c e a n o g r a p h y ,
Dartmouth,
N. S.
F o r s i x w e e k s d u r i n g t h e s u m m e r of 1966 s i m u l t a n e o u s
m a g n e t i c and e l e c t r i c fields r e c o r d i n g s w e r e m a d e at F r e d e r i c t o n ,
H a l i f a x a n d S a b l e I s l a n d . T h e m a i n p u r p o s e of t h e s e m e a s u r e m e n t s
w a s to obtain a conductivity p r o f i l e inside the e a r t h a c r o s s the e a s t e r n c o a s t of C a n a d a a n d t o s t u d y t h e e f f e c t of t h e c o a s t on t h e m a g n e t i c
variations. The data f r o m these stations h a s been analysed using
p o w e r s p e c t r a l t e c h n i q u e s . A g r a d u a l i n c r e a s e in t h e i n t e n s i t y of
v e r t i c a l c o m p o n e n t of t h e m a g n e t i c f i e l d v a r i a t i o n s i s o b s e r v e d f r o m
Sable Island to F r e d e r i c t o n . T h e p a p e r d e a l s with the p o s s i b l e
m e c h a n i s m which m a y be r e s p o n s i b l e f o r this v a r i a t i o n .
B e s i d e s m e a s u r i n g e l e c t r i c and m a g n e t i c field v a r i a t i o n s
on S a b l e I s l a n d , e l e c t r i c f i e l d w a s a l s o m e a s u r e d in t h e s e a a b o u t 3000
feet away f r o m the island. This was a p r e l i m i n a r y experiment towards
d e s i g n i n g a s e l f - c o n t a i n e d s y s t e m w h i c h c o u l d b e l o w e r e d in d e e p w a t e r
to r e c o r d e a r t h c u r r e n t s . A high c o r r e l a t i o n between the e a r t h c u r r e n t ,
m e a s u r e d on t h e i s l a n d a n d t h o s e m e a s u r e d o f f s h o r e , i s o b t a i n e d f o r
p e r i o d s l o w e r than t h r e e h o u r s but the c o r r e l a t i o n b e c o m e s p o o r f o r
higher periods. A possible reason is suggested for this phenomenon.
DL
4.
G E O M A G N E T I C V A R I A T I O N S T U D I E S IN I C E L A N D
J . F . H e r m a n c e a n d G. D. G a r l a n d , U n i v e r s i t y of T o r o n t o .
G e o m a g n e t i c v a r i a t i o n s g e n e r a t e d by t i m e - v a r y i n g
e l e c t r i c c u r r e n t s flowing in the A u r o r a l Zone over Iceland a r e u s e d
to Deep-Sound the e a r t h ' s c r u s t and u p p e r - m a n t l e , electrically.
R e c o r d s f r o m D a n i s h M a g n e t i c O b s e r v a t o r i e s in G r e e n land w e r e i n v e s t i g a t e d t o d e t e r m i n e an " a v e r a g e " s t r u c t u r e to the
A u r o r a l Zone c u r r e n t s y s t e m , which w a s found to be adequately
r e p r e s e n t e d b y a c u r r e n t s h e e t f l o w i n g a t a h e i g h t of 110 k m . w i t h a
G a u s s i a n - d i s t r i b u t e d c u r r e n t d e n s i t y of c h a r a c t e r i s t i c h a l f - w i d t h
480 k m .
A s u p p r e s s i o n , f o r b a y e v e n t s , of t h e Z / H p r o f i l e
- 86 -
p e r p e n d i c u l a r to t h e A u r o r a l Z o n e c u r r e n t s o u r c e i s b e s t e x p l a i n e d
a s a n i n d u c t i o n e f f e c t in a b r o a d conducting r e g i o n extending u n d e r
a l l of I c e l a n d a n d p r o b a b l y i s n o t d u e to a s o u r c e o r a n o c e a n e f f e c t .
The p r e l i m i n a r y conductivity m o d e l invoked is a nonc o n d u c t i n g c r u s t , s a y 30 k m t h i c k , o v e r l a y i n g a c o n d u c t i n g m a n t l e
of c o n d u c t i v i t y 0 . 1 m h o s / m e t e r .
DL
5.
A GRAVIMETRIC DETERMINATION O F THE V E R T I C A L ICE
M O V E M E N T O F THE PENNY ICE C A P , B A F F I N ISLAND
J. R. W e b e r , Gravity Division, Dominion O b s e r v a t o r y .
E l e v a t i o n c h a n g e s of i c e c a p s o v e r a l o n g t i m e p e r i o d
can be d e t e r m i n e d f r o m r e p e a t e d gravity m e a s u r e m e n t s at selected
l o c a t i o n s o n t h e i c e c a p s . It i s s h o w n t h a t a n i n c r e a s e i n e l e v a t i o n
of a b o u t 3 . 5 m c o r r e s p o n d s to a g r a v i t y d e c r e a s e of o n e m i l l i g a l
a n d t h a t t h e a c c u r a c y of i t s d e t e r m i n a t i o n d e p e n d s u p o n t h e p r e c i s i o n
of t h e g r a v i t y m e a s u r e m e n t s a n d o n h o w w e l l t h e a v e r a g e d e n s i t i e s
of t h e g a i n e d o r w a s t e d i c e o r s n o w m a s s e s b e d e t e r m i n e d .
The
s t a n d a r d d e v i a t i o n of a s i n g l e t i e o b s e r v a t i o n w i t h a L a C o s t e &
R o m b e r g i s + 0 . 04 m g a l , a n d t h e e r r o r d u e to u n c e r t a i n t i e s i n
d e n s i t y d e t e r m i n a t i o n s v a r i e s f r o m + 0. 8 to + 2 p e r c e n t of t h e
observed vertical displacement.
In 1962, two p a r a l l e l l i n e s of a l u m i n i u m p o l e s w e r e
d r i l l e d i n t o t h e f i r n a c r o s s t h e c r e s t of t h e P e n n y I c e C a p i n B a f f i n
I s l a n d w h e r e s e i s m i c s o u n d i n g s s h o w e d t h e i c e to b e 520 m t h i c k .
The p o l e s w e r e s u r v e y e d by t e l l u r o m e t e r t r i a n g u l a t i o n and by
o b s e r v i n g s i m u l t a n e o u s v e r t i c a l a n g l e s , and the g r a v i t y d i f f e r e n c e s
r e l a t i v e to a r o c k o u t c r o p w e r e m e a s u r e d .
T h e s u r v e y s w e r e r e p e a t e d i n 1965 a n d 1966.
The
h o r i z o n t a l m o v e m e n t of t h e p o l e s n e a r t h e i c e c a p c r e s t p r o v e d to
be s m a l l and the g r a v i t y o b s e r v a t i o n s w e r e m a d e at the o r i g i n a l
p o l e l o c a t i o n s . A g r a v i t y d e c r e a s e of 0. 18 + 0. 04 m g a l a t t h e
c e n t r e p o l e b e t w e e n 1962 a n d 1965 i s i n t e r p r e t e d a s a n e l e v a t i o n
i n c r e a s e of 0. 62 t 0 . 1 4 m a s c o m p a r e d w i t h a n i n c r e a s e of 0. 7 + 0. 3
m o b t a i n e d f r o m t h e t r i a n g u l a t i o n r e s u l t s . No s i g n i f i c a n t g r a v i t y
c h a n g e w a s o b s e r v e d b e t w e e n 1965 a n d 1966. T h e t o t a l s n o w
a c c u m u l a t i o n w a s 170 c m (88. 9 c m w a t e r e q u i v a l e n t ) f o r t h e p e r i o d
a u t u m n 1962 to a u t u m n 1965, a n d 84 c m ( 2 7 . 1 c m w a t e r e q u i v a l e n t )
f o r t h e p e r i o d a u t u m n 1965 to M a y 1966.
- 87 -
DL
6.
A P P L I C A T I O N OF GRAVITY DATA TO G E O D E T I C STUDIES AT
T H E DOMINION O B S E R V A T O R Y
Dezsb Nagy, Gravity Division, Dominion
Observatory.
T h e m a j o r p r o b l e m of p h y s i c a l g e o d e s y i s t o f i n d t h e
p o t e n t i a l of t h e e a r t h , s u c h t h a t i t s n o r m a l d e r i v a t i v e t a k e s on p r e s c r i b e d v a l u e s at the s u r f a c e . T h i s i s the second b o u n d a r y value
p r o b l e m of p o t e n t i a l t h e o r y , a l s o k n o w n a s t h e N e u m a n n p r o b l e m .
In t h e p r a c t i c a l c a s e t h e n o r m a l d e r i v a t i v e , t h e g r a v i t y v a l u e , i s
not known all over the e a r t h ' s s u r f a c e , which i n t r o d u c e s e r r o r s
into the solution.
At the Dominion O b s e r v a t o r y a c o m p u t e r m e t h o d i s
being developed to d e t e r m i n e the geoid o v e r Canada. The geoid is
an equipotential s u r f a c e at m e a n s e a - l e v e l and is s i m p l y the p o t e n t i a l
divided by the t h e o r e t i c a l g r a v i t y value. T h e input data f o r the
c o m p u t a t i o n s a r e the g r a v i t y v a l u e s which a m y be obtained e i t h e r f r o m
d i r e c t m e a s u r e m e n t s o r f r o m t h e a n a l y s i s of s a t e l l i t e o r b i t s .
The
i m p o r t a n t p a r t of t h e p r o g r a m i s a p r o v i s i o n f o r e r r o r a n a l y s i s .
DL
7.
A REVIEW OF EARTHQUAKE MECHANISM STUDIES
Anne E. Stevens,
Dominion Observatory,
Ottawa.
T h e m e c h a n i s m of e n e r g y r e l e a s e a t t h e f o c u s of a l a r g e
e a r t h q u a k e can be s t u d i e d by c o m p a r i n g r e c o r d e d and t h e o r e t i c a l
initial ground d i s p l a c e m e n t s p r o d u c e d at l a r g e d i s t a n c e s f r o m the f o c u s
by v a r i o u s f o c a l m o d e l s . I n i t i a l d i s p l a c e m e n t p a t t e r n s p r o d u c e d by
longitudinal (P) w a v e s indicate that the f o c a l m e c h a n i s m m a y be r e p r e s e n t e d b y e i t h e r a s i n g l e c o u p l e ( T y p e I) o r a d o u b l e d i p o l e ( T y p e II)
f o r c e s y s t e m a c t i n g at a point f o c u s . D i s p l a c e m e n t p a t t e r n s in t r a n s v e r s e (S) w a v e s a n d s u r f a c e w a v e s c a n d i s t i n g u i s h b e t w e e n t h e s e t w o
mechanism types.
O b s e r v a t i o n a l r e s u l t s h a v e s h o w n t h a t T y p e II w a s t h e
better focal m o d e l f o r m o s t earthquakes studied to date.
However,
t h e s e e a r t h q u a k e s r e p r e s e n t e d only a few s e i s m i c r e g i o n s .
Theoretical
r e s u l t s h a v e s h o w n t h a t t h e T y p e II p a t t e r n h a s a t l e a s t t h r e e p h y s i c a l
interpretations - - faulting, regional s t r e s s release, or a sudden phase
c h a n g e in t h e f o c a l r e g i o n .
- 88 -
A c r i t i c a l r e v i e w of s e v e r a l h u n d r e d P a n d S
m e c h a n i s m solutions has e m p h a s i z e d the n e c e s s i t y for an adequate
a z i m u t h d i s t r i b u t i o n of d a t a a b o u t t h e e p i c e n t r e to e n s u r e m e a n i n g f u l s o l u t i o n s . A b o u t 10% of p r e v i o u s l y p u b l i s h e d m e c h a n i s m s o l u t i o n s
w e r e c l o s e l y defined by the d a t a .
DL
8.
T H E NEW E A R T H TIDE OBSERVATORY NEAR OTTAWA
D. R . B o w e r , G r a v i t y D i v i s i o n , D o m i n i o n O b s e r v a t o r y .
In t h e p a s t f e w y e a r s , i n s t r u m e n t s h a v e b e c o m e
a v a i l a b l e to m e a s u r e c h a n g e s i n t h e v e r t i c a l a n d h o r i z o n t a l c o m p o n e n t s
of g r a v i t a t i o n a l a t t r a c t i o n to a n a c c u r a c y of 10" ^ g . T h i s i s w e l l
w i t h i n t h e r a n g e of v a r i a t i o n s d u e to t h e e a r t h t i d e a n d o t h e r s m a l l
d e f o r m a t i o n s of t h e e a r t h . Of p a r t i c u l a r i n t e r e s t i s t h e a p p l i c a t i o n
of s u c h m i c r o g r a v i t y m e a s u r e m e n t s to r e g i o n a l s t u d i e s of t h e e a r t h ' s
crust.
T h e p r i n c i p a l r e g i o n a l a p p l i c a t i o n s i n c l u d e m e a s u r e m e n t of
t h e d e f o r m a t i o n d u e to l o a d i n g of t h e c r u s t b y o c e a n t i d e s a n d b y t h e
m o v i n g a t m o s p h e r e , m e a s u r e m e n t of t h e d e f o r m a t i o n n e a r f a u l t s ,
a n d i d e n t i f i c a t i o n of t e c t o n i c - b l o c k s t r u c t u r e . E n g i n e e r i n g a p p l i c a tions i n c l u d e m e a s u r e m e n t s n e a r d a m s , in m i n e s and r a i l w a y
t u n n e l s , a n d s u r f a c e m e a s u r e m e n t s to d e t e r m i n e t h e e f f e c t of
ground-water depletion.
The e a r t h tide o b s e r v a t o r y d i s c u s s e d h e r e is being
e s t a b l i s h e d f o r t h r e e p r i n c i p a l r e a s o n s . T h e s e a r e : (i) to e x t e n d
t h e e x i s t i n g c o v e r a g e of c o n t i n u o u s , s y s t e m a t i c o b s e r v a t i o n s of
t h e e a r t h t i d e ; (ii) to i n v e s t i g a t e t h e r e l i a b i l i t y of m i c r o g r a v i m e t r i c i n s t r u m e n t s a n d t h e t e c h n i q u e s of s i t e s e l e c t i o n a n d
i n s t a l l a t i o n ; ( i i i ) to i n v e s t i g a t e t h e u t i l i t y of t h e s e m e a s u r e m e n t s
i n r e g i o n a l s t u d i e s of t h e e a r t h ' s c r u s t .
The site c h o s e n f o r the s t a t i o n is in an abandoned
a s b e s t o s m i n e l o c a t e d a b o u t 30 m i l e s n o r t h of O t t a w a .
Two
h o r i z o n t a l p e n d u l u m s of t h e V e r b a a n d e r t - M e l c h i o r t y p e a r e b e i n g
i n s t a l l e d i n a n i c h e c u t i n t h e r o c k f a c e a t t h e e n d of a n 8 0 0 f o o t
a d i t . A m i r r o r m o u n t e d o n e a c h p e n d u l u m r e f l e c t s t h e i m a g e of
a l i g h t s o u r c e o n to a s e r v o - d r i v e n p h o t o c e l l l o c a t e d 14 f e e t a w a y .
P r o p o r t i o n a l v o l t a g e s a r e g e n e r a t e d and c a r r i e d outside the m i n e
to a s m a l l h u t w h e r e t h e y a r e f i l t e r e d a n d t h e n r e c o r d e d , t o g e t h e r
with t i m e , on m a g n e t i c tape in a c o m p u t e r - c o m p a t i b l e f o r m a t .
A L a C o s t e - R o m b e r g e a r t h - t i d e g r a v i m e t e r will a l s o
be i n s t a l l e d at the site s h o r t l y and e x t e n s o m e t e r s a r e being
considered for future installation.
- 89 -
DL
9.
S U R F A C E W A V E S IN T H E V I C I N I T Y O F L A R G E C H E M I C A L
EXPLOSIONS AT SUFFIELD
H . S. H a s e g a w a ,
Dominion Observatory,
Ottawa.
T h e p r e s e n t i n v e s t i g a t i o n i s a c o n t i n u t a t i o n of t h e
Suffield s e i s m i c p r o g r a m which is c o n c e r n e d p r i m a r i l y with the
f o l l o w i n g : a s t u d y of t h e p r o p a g a t i o n c h a r a c t e r i s t i c s of t h e l a r g e a m p l i t u d e s e i s m i c w a v e s in t h e v i c i n i t y of m u l t i t o n , u n c o n f i n e d ,
c h e m i c a l e x p l o s i o n s ; t h e i d e n t i f i c a t i o n of t h e s i g n i f i c a n t c o m p o n e n t s
of t h e s e w a v e s ; a d e t e r m i n a t i o n of t h e s o u r c e m e c h a n i s m of t h e s e
waves. T h e o r e t i c a l Rayleigh and Love wave d i s p e r s i o n c u r v e s a r e
c o m p a r e d with the e x p e r i m e n t a l data; for Rayleigh w a v e s an a d d itional c r i t e r i o n is u s e d , n a m e l y the s u r f a c e p a r t i c l e motion.
The
r e s u l t s i n d i c a t e t h a t (1) t h e p r o p a g a t i o n c h a r a c t e r i s t i c s of t h e s e l a r g e a m p l i t u d e s u r f a c e w a v e s a r e s t r o n g l y i n f l u e n c e d by t h e m u l t i l a y e r i n g
of u n c o n s o l i d a t e d s e d i m e n t s ( s e v e r a l h u n d r e d f e e t t h i c k ) w h i c h o v e r l i e
s e d i m e n t a r y r o c k s , (2) t h e t w o m a i n c o m p o n e n t s of t h e s u r f a c e w a v e
f o r w h i c h t h e g r o u n d m o t i o n i s i n t h e r a d i a l - v e r t i c a l p l a n e a r e of t h e
t y p e s p r e d i c t e d b y P r e s s a n d E w i n g (1951) a n d P r e s s a n d O l i v e r (1955);
t h e s e c o m p o n e n t s , a constant f r e q u e n c y wave t r a i n and a d i s p e r s i v e
wave, a r e commonly r e f e r r e d to as air-coupled Rayleigh waves,
(3) t h e t r a n s v e r s e w a v e m o t i o n , w h i c h i s a p p r e c i a b l e i n a m p l i t u d e on
m a n y of t h e s e i s m o g r a m s of u n c o n f i n e d e x p l o s i o n s , i s d i f f i c u l t t o
a n a l y z e b e c a u s e of t h e i r r e g u l a r a p p e a r a n c e of t h e i r w a v e f o r m s a n d
t h e w i d e s p a c i n g of t h e s e i s m o m e t e r s , a n d (4) t h e m a j o r p o r t i o n of
t h e e n e r g y of t h e s e s u r f a c e w a v e s i s c o n f i n e d t o t h e p e r i o d r a n g e
0. 2 s e c t o 1. 0 s e c .
D L 10.
SHORT P E R I O D P WAVE EVIDENCE O F CRUSTAL
R. M. E l l i s a n d P .
W. B a s h a m ,
INHOMOGENEITIES
U n i v e r s i t y of B r i t i s h C o l u m b i a .
T i m e d o m a i n s t u d i e s of s h o r t p e r i o d P w a v e s r e c o r d e d
o n t h e d e e p h o r i z o n t a l s e d i m e n t s of c e n t r a l A l b e r t a s h o w l a r g e t r a n s v e r s e a m p l i t u d e s in t h e P w a v e c o d a , d i s t i n c t a r r i v a l s due to s c a t t e r ing a n d l a r g e d e v i a t i o n s of a p p a r e n t a z i m u t h f r o m t h e t r u e a z i m u t h .
In t h e f r e q u e n c y d o m a i n , o b s e r v e d v e r t i c a l - t o - r a d i a l s p e c t r a l r a t i o s
do not a g r e e c l o s e l y with t h o s e c a l c u l a t e d t h e o r e t i c a l l y u s i n g known
v e l o c i t i e s and f u r t h e r m o r e exhibit v a r i a b i l i t y b e t w e e n e a r t h q u a k e s
f r o m d i f f e r e n t r e g i o n s a n d e v e n b e t w e e n e a r t h q u a k e s of s i m i l a r h y p o central regions.
It i s c o n c l u d e d t h a t t h e d e v i a t i o n of t h e s e o b s e r v a t i o n s
f r o m those p r e d i c t e d f o r a horizontally l a y e r e d s y s t e m is due to inh o m o g e n e i t i e s in t h e c r u s t .
- 90 -
Session £1
FRIDAY,
J U N E 23, 9:00 a . m .
H E A L T H P H Y S I C S S Y M P O S I U M (A)
EI
1.
THE TRANSPORTATION OF RADIOACTIVE MATERIALS
R o b e r t W. B l a c k b u r n , A t o m i c E n e r g y C o n t r o l B o a r d .
Radioactive m a t e r i a l s t r a n s p o r t regulations which a r e
b a s e d on h e a l t h p h y s i c s p r i n c i p l e s and w h i c h a r e i n t e r n a t i o n a l l y
u n i f o r m f o r a l l m o d e s of t r a n s p o r t h a v e r e c e n t l y b e e n d e v e l o p e d
u n d e r t h e s p o n s o r s h i p of t h e I n t e r n a t i o n a l A t o m i c E n e r g y A g e n c y
( I A E A ) a n d a r e c u r r e n t l y b e i n g a d o p t e d b y m o s t c o u n t r i e s of t h e w o r l d ,
including Canada.
T h e b a s i c c o n s i d e r a t i o n i n t h e t r a n s p o r t of r a d i o a c t i v e
m a t e r i a l s i s t h a t they m a y p r e s e n t r a d i a t i o n and c o n t a m i n a t i o n h a z a r d s
to t r a n s p o r t w o r k e r s , p a s s e n g e r s , and the g e n e r a l public.
Also,
s i m i l a r h a z a r d s m a y r e s u l t f r o m c r i t i c a l i t y i n c i d e n t s in the t r a n s p o r t
of f i s s i l e r a d i o a c t i v e m a t e r i a l s . In a d d i t i o n , r a d i a t i o n e x p o s u r e m a y
d a m a g e companion c a r g o such a s undeveloped film.
Under the IAEA Regulations, t h e s e potential h a z a r d s
a r e c o n t r o l l e d by c o n s i d e r i n g the t h r e e b a s i c f a c t o r s : radionuclide
health h a z a r d s , packaging p e r f o r m a n c e , and t r a n s p o r t e n v i r o n m e n t .
Radionuclides a r e grouped according to relative h a z a r d
on " p h y s i c a l f o r m " a n d " r a d i o t o x i c i t y " b a s e s . F r o m t h i s t r a n s p o r t
g r o u p i n g a n d a k n o w l e d g e of p a c k a g i n g p e r f o r m a n c e u n d e r v a r i o u s
c o n d i t i o n s of t r a n s p o r t a r e d e r i v e d t h e q u a n t i t y l i m i t s of t h e d i f f e r e n t
r a d i o n u c l i d e s g r o u p i n g s which m a y be t r a n s p o r t e d within the d i f f e r e n t
t y p e s of p a c k a g i n g . P a c k a g i n g , w h i c h i s t h e p r i m a r y c o n t r o l o v e r
e x t e r n a l r a d i a t i o n a n d c o n t a m i n a t i o n h a z a r d s , i s c a t e g o r i z e d on t h e
b a s i s of i t s a b i l i t y t o r e t a i n s h i e l d i n g , c o n t a i n m e n t , s p a c i n g ( f o r
fissiles), and heat t r a n s f e r (for large sources) capabilities under
n o r m a l a n d a c c i d e n t c o n d i t i o n s of t r a n s p o r t . In t h e t r a n s p o r t
environment, simple operational controls a r e employed to f u r t h e r
m i n i m i z e r a d i a t i o n e x p o s u r e t o p e r s o n n e l a n d f i l m . In a d d i t i o n ,
t h e " n o r m a l " a n d " a c c i d e n t " c o n d i t i o n s of t r a n s p o r t a r e d e f i n e d a n d
a r e used as p e r f o r m a n c e requirements for packaging.
The b a s e s f o r the IAEA Regulations and t h e i r application
i n C a n a d a a r e d e v e l o p e d i n d e t a i l in t h i s p a p e r .
- 91 -
EI
2.
SOME A S P E C T S OF THE APPLICATION OF INTERNATIONAL
S T A N D A R D S IN R A D I A T I O N P R O T E C T I O N P R A C T I C E S
A. H . B o o t h ,
Radiation Protection Division, Ottawa,
Ontario
T h e a p p l i c a t i o n of t h e r e c o m m e n d a t i o n s of t h e
I n t e r n a t i o n a l C o m m i s s i o n on R a d i o l o g i c a l p r o t e c t i o n t o c e r t a i n p r a c t i c a l
p r o b l e m s a r i s i n g in r a d i a t i o n p r o t e c t i o n p r o g r a m s i s d i s c u s s e d .
T h e r e c o m m e n d a t i o n s a r e n o t g e n e r a l l y g i v e n in a f o r m w h i c h p r o v i d e s
u n e q u i v o c a l g u i d a n c e in d e a l i n g w i t h s u c h p r o b l e m s .
Frequently,
the decisions involved a r e left to the "national authority".
Particular
a t t e n t i o n i s c a l l e d t o t h e f o l l o w i n g d i f f i c u l t i e s : (1) t h e r e l a t i o n b e t w e e n
actual e x p o s u r e l e v e l s and the m a x i m u m p e r m i s s i b l e levels e s t a b l i s h e d
f o r " c o n t i n u o u s " e x p o s u r e c o n d i t i o n s ; (2) t h e c o n t r o l m e c h a n i s m s
r e q u i r e d in s i t u a t i o n s w h e r e e x p o s u r e s a r e p r o d u c e d f r o m a v a r i e t y of
s o u r c e s a n d (3) t h e f o l l o w - u p a c t i o n s r e q u i r e d in d e a l i n g w i t h i n c i d e n t s
w h e r e the r e c o m m e n d e d limits have been exceeded accidentally.
These
topics a r e illustrated with specific e x a m p l e s .
EI
3.
R E G U L A T O R Y C O N T R O L S IN T H E U S E O F R A D I O I S O T O P E S
A. K. D a s G u p t a , R a d i a t i o n P r o t e c t i o n D i v i s i o n , O t t a w a ,
Ontario
T h e a c q u i s i t i o n a n d u s e of a l l r a d i o a c t i v e m a t e r i a l i n
Canada is subject to the Atomic E n e r g y Control Regulations.
These,
u n l i k e r e g u l a t i o n s of m a n y o t h e r c o u n t r i e s , do n o t g i v e s p e c i f i c
r e q u i r e m e n t s f o r a n y p a r t i c u l a r u s e . It t h u s b e c o m e s t h e r e s p o n s i b i l i t y
of t h e r e g u l a t o r y a g e n c i e s t o s c r u t i n i z e e v e r y p r o p o s e d u s e a n d e n s u r e
that the full b e n e f i t s f r o m r a d i o i s o t o p e s can be obtained without
i n c u r r i n g u n a c c e p t a b l e h a z a r d s to public health and safety.
This
responsibility r e s t s mainly with the Radiation Protection Division
of t h e D e p a r t m e n t of N a t i o n a l H e a l t h a n d W e l f a r e .
T h e p r o b l e m s t h a t a r i s e f r o m t h e u s e of r a d i o i s o t o p e s
i n d i f f e r e n t f i e l d s of e n d e a v o u r a r e d i v e r s e . T h e y c a n b e c o n s i d e r e d
in t h r e e c a t é g o r i e s - - i n d u s t r i a l , m e d i c a l a n d r e s e a r c h u s e s . In
C a n a d i a n i n d u s t r y , t h e g r e a t p o t e n t i a l of r a d i o i s o t o p e s i s n o t f u l l y
r e a l i z e d , a n d t h e r e g u l a t i o n s a r e i m p l e m e n t e d in a w a y t h a t w i l l
a s s i s t t h e u s e r s in a c q u i r i n g a p r o p e r p e r s p e c t i v e of t h e p o t e n t i a l
g a i n s a s w e l l a s t h e h a z a r d s . In t h e f i e l d s of m e d i c i n e a n d r e s e a r c h ,
in r e c e n t t i m e s a t t e m p t s h a v e b e e n m a d e t o e n c o u r a g e e f f e c t i v e
control by the institutions t h e m s e l v e s . T h i s h a s been achieved by the
f o r m a t i o n of l o c a l c o m m i t t e e s a n d b y r e d u c i n g a d m i n i s t r a t i v e h u r d l e s
to a m i n i m u m without in any way s a c r i f i c i n g s a f e t y r e q u i r e m e n t s .
Canadian r e g u l a t i o n s allow g r e a t flexibility and full
a d v a n t a g e of t h i s i s t a k e n b y t h e r e g u l a t o r y a g e n c i e s t o e n s u r e t h a t
- 92 -
they do not b e c o m e a h i n d r a n c e t o p r o g r e s s . The Radiation P r o t e c t i o n
Division believes that its advisory role is f a r m o r e important than
i t s r e g u l a t o r y f u n c t i o n s . It p r o v i d e s a n u m b e r of v e r y i m p o r t a n t
s e r v i c e s - - c h i e f amongst which a r e the F i l m Monitoring Service,
t r a i n i n g c o u r s e s , p u b l i c a t i o n of s a f e t y c o d e s a n d i n f o r m a t i o n l i t e r a t u r e ,
inspection s e r v i c e s and the newly c r e a t e d b o d y - b u r d e n a s s a y s e r v i c e .
EI
4.
THE SAFETY ASPECTS OF NUCLEAR ACCELERATOR
J. M. R o b s o n ,
INSTALLATIONS
D e p a r t m e n t of P h y s i c s , U n i v e r s i t y of O t t a w a
T h e s a f e t y a s p e c t s of s e v e r a l N u c l e a r P a r t i c l e A c c e l e r a t o r s
in u s e in C a n a d i a n U n i v e r s i t i e s h a v e b e e n c o n s i d e r e d b y a n A d v i s o r y
C o m m i t t e e of t h e A t o m i c E n e r g y C o n t r o l B o a r d . T h e e x p e r i e n c e
g a i n e d w i l l b e s u m m a r i z e d a s a s e t of s u g g e s t e d g u i d e - l i n e s f o r s a f e
installations. The guidelines will cover h a z a r d s f r o m direct radiations
and f r o m noxious gas p r o d u c t i o n and conventional non r a d i a t i o n h a z a r d s ;
they will c o n s i d e r a c c e s s - p r e v e n t i o n d e v i c e s , w a r n i n g d e v i c e s and
a d m i n i s t r a t i v e controls. S o m e suggestions will be m a d e f o r f u r t h e r
e x p e r i m e n t a l d e v e l o p m e n t w o r k c o n n e c t e d w i t h t h e g e n e r a l p r o b l e m s of
accelerator safety.
EI
7.
ADVANTAGES AND LIMITATIONS OF SEMICONDUCTOR DETECTORS
IN M E D I C A L A N D B I O L O G I C A L P H Y S I C S A P P L I C A T I O N S
R. M . G r e e n , R C A V i c t o r C o m p a n y , L t d . , M o n t r e a l
T h e v a r i o u s t y p e s of s i l i c o n n u c l e a r p a r t i c l e d e t e c t o r s
h a v e a n u m b e r of c h a r a c t e r i s t i c s w h i c h m a k e t h e m a t t r a c t i v e f o r
a p p l i c a t i o n s i n n u c l e a r m e d i c i n e a n d b i o l o g y . In p a r t i c u l a r , f o r i n
vivo applications, the high detection efficiency (compared to gas counters),
the ability t o f a b r i c a t e s m a l l d e v i c e s , and the low o p e r a t i n g voltage
are considerable advantages.
A n u m b e r of p r o b l e m s a l s o e x i s t , of c o u r s e .
The
c a p a c i t a n c e a n d e x t r a n e o u s p i c k - u p of t h e n e c e s s a r i l y l o n g c a b l e
i n c r e a s e the noise level substantially, s e v e r e l y degrading the
sensitivity. S p u r i o u s counts due to m e c h a n i c a l v i b r a t i o n and s t r e s s
m u s t a l s o b e e l i m i n a t e d . In a d d i t i o n , t h e d e s i g n m u s t b e s u c h a s t o
p e r m i t s t e r i l i z a t i o n a n d i m m e r s i o n in b o d y f l u i d s .
S u r p r i s i n g l y l i t t l e u s e h a s b e e n m a d e of t h e s e d e t e c t o r s
in the m e d i c a l field. T h i s p a p e r o u t l i n e s the a t t e m p t s both at R C A
V i c t o r and o t h e r l a b o r a t o r i e s to p r o d u c e suitable d e t e c t o r s y s t e m s .
S a t i s f a c t o r y m e c h a n i c a l d e s i g n s h a v e been obtained, but the n o i s e
l e v e l d u e t o t h e l e n g t h of c a b l e i s a m a j o r d i f f i c u l t y . A m p l i f i c a t i o n
at the d e t e c t o r would significantly r e d u c e this contribution to the noise.
One t e c h n i q u e i s to i n c l u d e an a m p l i f i e r with the d e t e c t o r but t h i s
c o m p l i c a t e s both the p a c k a g i n g and the shielding (an a d d i t i o n a l supply
voltage line is n o r m a l l y r e q u i r e d ) . A b e t t e r a l t e r n a t i v e is to u s e
- 93 -
d e t e c t o r s with build-in gain.
property are described.
EI
8.
Two device configurations with this
LITHIUM F L U O R I D E AS A P E R S O N N E L
DOSIMETER
A. G. S c o t t , H e a l t h a n d S a f e t y B r a n c h W h i t e s h e l l N u c l e a r R e s e a r c h
E s t a b l i s h m e n t , A t o m i c E n e r g y of C a n a d a L i m i t e d , P i n a w a , M a n i t o b a
L u m i n e s c e n c e d o s i m e t e r s a r e of p o t e n t i a l v a l u e f o r s h o r t
t e r m control radiation exposures, particularly for those establishments
t h a t do not h a v e t h e i r own f i l m - b a d g e p r o c e s s i n g unit.
Whiteshell Nuclear Research Establishment have
combined L i F d o s i m e t e r s with selected f i l m - b a d g e s f o r this p u r p o s e ,
and h a v e r e a d t h e d o s i m e t e r s r o u t i n e l y to c o m p a r e t h e r e s u l t s obtained
in p r a c t i c e b y L i F a n d f i l m d o s i m e t r y s y s t e m s . T h e t w o s y s t e m s a g r e e
w e l l o n e s t i m a t e s of ^ e x p o s u r e w i t h i n d i c a t i o n s t h a t L i F i s s l i g h t l y
m o r e s e n s i t i v e t h a n f i l m f o r e x p o s u r e s n e a r t h e 20 m R l e v e l .
A v a l u a b l e f e a t u r e of L i F i s t h a t t h e r e i s v e r y l i t t l e
f a d i n g of t h e s t o r e d d o s e , s o it i s p o s s i b l e t o i n t e g r a t e t h e d o s e
received over some months.
A p r o g r a m m e i s now in p r o g r e s s to c o m p a r e the i n t e g r a t e d
e x p o s u r e o v e r a p e r i o d of 3 m o n t h s a s d e t e r m i n e d b y L i F w i t h t h a t
d e t e r m i n e d by d o s i m e t e r f i l m s changed e v e r y two w e e k s .
Preliminary
r e s u l t s i n d i c a t e t h a t f o r t o t a l d o s e s of a b o u t 2 0 0 m R in 3 m o n t h s ,
the difference between the s y s t e m s is small.
E I 10.
R A D I O L O G I C A L H E A L T H P R O B L E M S IN A U N I V E R S I T Y
B r i a n D. P a t e , D e p a r t m e n t of C h e m i s t r y , S i m o n F r a s e r
B u r n a b y 2, B . C.
University,
T h e b r o a d f e a t u r e s of a t y p i c a l u n i v e r s i t y r e s e a r c h p r o g r a m
in n u c l e a r and r a d i o c h e m i s t r y a r e outlined and the a s s o c i a t e d r a d i o l o g i c a l
h a z a r d s a r e d e s c r i b e d . It i s n o t e d t h a t t h e r a d i o l o g i c a l h a z a r d s a r e
v e r y s i m i l a r f o r a w i d e r a n g e of r e s e a r c h o p e r a t i o n s ; a l s o t h e n a t u r e
of t h e p r o g r a m i s s u c h t h a t f r e q u e n t c h a n g e s of d i r e c t i o n a n d i n
operational detail a r e the rule r a t h e r than the exception.
T h e i m p a c t of t h e f o r e g o i n g i s o u t l i n e d on t h e form of
r a d i o i s o t o p e l i c e n c e and i m p o r t p e r m i t a r r a n g e m e n t s which a r e m o s t
c o n v e n i e n t f r o m t h e u n i v e r s i t y p o i n t of v i e w . C u r r e n t e x p e r i e n c e i n
these m a t t e r s is discussed.
- 94 -
T h e p e c u l i a r h a z a r d s a s s o c i a t e d w i t h t h e o p e r a t i o n of
a d - T n e u t r o n g e n e r a t o r a r e outlined together with an a s s e s s m e n t
of t h e c u r r e n t u n d e r s t a n d i n g of t h e s e h a z a r d s . I n i t i a l e x p e r i e n c e
i n t h e c o n t r o l of t h e s e h a z a r d s a t S i m o n F r a s e r U n i v e r s i t y w i l l b e
presented.
E I 11.
S E N S E A N D N O N S E N S E IN I N T E R N A L E X P O S U R E C R I T E R I A AS
E X E M P L I F I E D BY E X P E R I E N C E W I T H T R I T I A T E D H E A V Y W A T E R
W. R . B u s h , A t o m i c E n e r g y of C a n a d a ,
Chalk R i v e r
T h e c r i t e r i a f o r l i m i t i n g i n t a k e of t r i t i u m o x i d e a r e
i n t e r m e d i a t e in c o m p l e x i t y b e t w e e n t h o s e f o r e x t e r n a l g a m m a
r a y s and those f o r other internal contaminants. Consequently, a
c r i t i c a l s t u d y of s o m e of t h e s e n s i b l e a n d n o n s e n s i c a l a s p e c t s of
t r i t i u m oxide c o n t r o l can h e l p b r i d g e the gap in u n d e r s t a n d i n g that
e x i s t s between e x t e r n a l and i n t e r n a l radiation e x p o s u r e s .
Enough flexibility is available within statutory dose
limits that a p p r o p r i a t e control c r i t e r i a can be designed f o r a wide
r a n g e of e x p o s u r e c i r c u m s t a n c e s .
But f u l l a d v a n t a g e i s not a l w a y s
t a k e n of t h i s f l e x i b i l i t y a n d r e l a t i v e l y s t r i c t c r i t e r i a a r e o f t e n
applied to internal contaminants. This is partially justifiable for
t r i t i u m oxide b e c a u s e u n d e r typical Chalk R i v e r e x p o s u r e conditions
m o r e c a r e i s r e q u i r e d t o l i m i t i n t a k e of t r i t i u m o x i d e t h a n i s r e q u i r e d
to a v e r t equivalent g a m m a - r a y e x p o s u r e s . By adhering to relatively
s t r i c t c r i t e r i a , w o r k e r s a r e k e p t s o c o n s c i o u s of t h e t r i t i u m h a z a r d
t h a t s a f e w o r k h a b i t s b e c o m e h a b i t u a l . On the o t h e r h a n d , a d h e r e n c e
to excessively strict c r i t e r i a h a s certain disadvantages. F o r example,
one c a n b e c o m e so involved in r e l a t i v e l y c o m p l e x i n t e r n a l e x p o s u r e
c o n t r o l s that even b i g g e r e x t e r n a l e x p o s u r e s can go unnoticed b e c a u s e
of m o r e p e r m i s s i v e c r i t e r i a .
E I 12.
A STUDY O F RADIATION E X P O S U R E DOSES F R O M F I L M MONITORING
S E R V I C E D A T A O F 1964 A N D 1965
R . N. K h a n d k a r , R a d i a t i o n P r o t e c t i o n D i v i s i o n , D e p a r t m e n t of
National Health and W e l f a r e , Ottawa
S i n c e 1951 t h e R a d i a t i o n P r o t e c t i o n D i v i s i o n h a s p r o v i d e d
Canadian r a d i a t i o n w o r k e r s with a f i l m m o n i t o r i n g s e r v i c e f o r the
d e t e c t i o n a n d m e a s u r e m e n t of e x t e r n a l r a d i a t i o n e x p o s u r e .
This
p a p e r d e s c r i b e s t h e r e s u l t s of t h e s t a t i s t i c a l a n a l y s i s of t h e X a n d
g a m m a r a y e x p o s u r e d o s e s r e c e i v e d by t h e r a d i a t i o n w o r k e r s d u r i n g
t h e y e a r s 1964 a n d 1965. T h e a n a l y s i s of e x p o s u r e d a t a p e r t a i n i n g t o
t h i s t w o y e a r p e r i o d i s of p a r t i c u l a r i n t e r e s t f o r t h e f o l l o w i n g r e a s o n s ;
- 95 -
(1) T h e i n t r o d u c t i o n of s e m i - a u t o m a t i c m e t h o d s i n t h e f i l m m o n i t o r i n g
s e r v i c e p e r m i t s t h e r e c o r d i n g of d o s e s d o w n t o 1 m r . In t h e p a s t t h e
l o w e r l i m i t of r e c o r d e d e x p o s u r e w a s 40 m r ; (2) B e c a u s e t h e d a t a
a r e r e c o r d e d on p u n c h c a r d s it i s n o w p o s s i b l e t o s e p a r a t e t h e m a i n
o c c u p a t i o n a l g r o u p s ( h o s p i t a l s , i n d u s t r y , c l i n i c s , etc. ) into s u b - g r o u p s
a c c o r d i n g to individual job c l a s s e s ( l a b o r a t o r y t e c h n i c i a n , m e d i c a l
p h y s i c i s t , r a d i o l o g i c a l t e c h n i c i a n , d i a l p a i n t e r , oil l o g g e r , e t c . ). It
i s a l s o p o s s i b l e t o s e p a r a t e t h e e x p o s u r e r e c o r d s of c l e r i c a l a n d s u p p o r t i n g
s t a f f f o r w h o m t h e p r o b a b i l i t y of e x p o s u r e i s n e g l i g i b l e .
In a s s e s s i n g t h e d o s e l e v e l s of i n d i v i d u a l g r o u p s , t w o
m e t h o d s a r e u s e d . O n e m e t h o d i n v o l v e s t h e d e t e r m i n i n g of t h e
average annual cumulative exposure per person. The second method
involves computing the a v e r a g e dose p e r film. A v e r a g e values a r e
shown f o r m a l e and f e m a l e w o r k e r s s e p a r a t e l y by two a g e c l a s s e s :
W o r k e r s b e l o w 30 y e a r s of a g e a n d t h o s e 30 y e a r s a n d o l d e r . A
c o m p a r i s o n i s a l s o m a d e of t h e a v e r a g e d o s e v a l u e s f o r v a r i o u s j o b
c l a s s e s . F i n a l l y t o a s s e s s t h e r e l a t i v e r i s k of e x p o s u r e , a v e r a g e
d o s e v a l u e s a r e e x p r e s s e d a s a p e r c e n t a g e of s t a n d a r d s d e r i v e d f r o m
t h e r e c o m m e n d a t i o n s of t h e I C R P .
R e s u l t s i n d i c a t e that r a d i a t i o n e x p o s u r e s in t h e i n d u s t r y
g r o u p s a r e h i g h e r than other occupational g r o u p s but still c o n s i d e r a b l y
l e s s than the r e c o m m e n d e d m a x i m u m p e r m i s s i b l e dose.
- 96 -
Session E J
FRIDAY,
J U N E 23, 9:00 a . m .
E A R T H P H Y S I C S III
C. C a r m i c h a e l ,
EJ
1.
Chairman
T H E M A X W E L L B R I D G E A S A C I R C U I T E L E M E N T IN F E E D B A C K
SEISMOGRAPH S
R . D. R u s s e l l , R . D. M e l d r u m a n d O, G .
U n i v e r s i t y of B r i t i s h C o l u m b i a .
Jensen,
T h e c h a r a c t e r i s t i c s of a s e i s m o g r a p h c a n b e m o d i f i e d
b y f i l t e r i n g o r b y t h e u s e of n e g a t i v e f e e d b a c k . B o t h m e t h o d s p r o v i d e
the s a m e b a s i c s i g n a l - t o - n o i s e c a p a b i l i t i e s , and each h a s its p a r t i c u l a r
a d v a n t a g e s . T h e p r i n c i p a l a d v a n t a g e of t h e f e e d b a c k i n s t r u m e n t i s t h e
p o s s i b i l i t y of l i n e a r i t y o v e r a g r e a t e r d y n a m i c r a n g e .
It i s s h o w n t h a t b y i n c o r p o r a t i n g a s e i s m o m e t e r i n t o a
b a l a n c e d M a x w e l l b r i d g e , and by r e t u r n i n g t h e f e e d b a c k t h r o u g h t h e
b r i d g e , it is p o s s i b l e to c o n t r o l individually the e f f e c t i v e m a s s , s p r i n g
c o n s t a n t a n d d a m p i n g r a t i o of t h e i n s t r u m e n t . F o r e x a m p l e , a W i l l m o r e
M a r k I s e i s m o m e t e r h a s been m a d e to o p e r a t e with an effective m a s s
well o v e r one ton.
A feedback seismograph h a s been constructed using this
p r i n c i p l e a n d h a s b e e n in c o n t i n u o u s o p e r a t i o n f o r o n e a n d o n e - h a l f
y e a r s . P l a n s a r e u n d e r w a y to build a digital v e r s i o n which will a l s o
u s e the Maxwell b r i d g e feedback link.
EJ
2.
A T I M E - T E R M ANALYSIS O F T H E FIRST ARRIVAL DATA F R O M
T H E S E I S M I C E X P E R I M E N T IN H U D S O N B A Y , 1965.
Alan Ruffman, Dalhousie University.
A t i m e - t e r m a n a l y s i s i s m a d e of t h e f i r s t a r r i v a l d a t a
f r o m t h e 41 s h o t s of t h e 1965 H u d s o n B a y s e i s m i c e x p e r i m e n t .
An
i n v e s t i g a t i o n of t h e w a t e r w a v e d a t a i s m a d e t o d e t e r m i n e w h i c h of
t h r e e p o s s i b l e s e r i e s of n a v i g a t i o n i s m o s t c o n s i s t e n t . A s i n g l e l a y e r e d c r u s t w i t h a c o m p r e s s i o n a l w a v e v e l o c i t y of 6. 33 k m / a a n d
a n u p p e r m a n t l e c o m p r e s s i o n a l w a v e v e l o c i t y of 8. 27 k m / s a r e p r o p o s e d f o r H u d s o n Bay. T h e M o h o r o v i c i c discontinuity is found to
- 97 -
h a v e c o n s i d e r a b l e t o p o g r a p h y with d e p t h s r a n g i n g f r o m 42. 7 k m
t o l e s s t h a n 26 k m . T h e C h u r c h i l l - S u p e r i o r b o u n d a r y i s p r o p o s e d
to be a t h r e e - d i m e n s i o n a l c r u s t a l f e a t u r e and is extended o f f s h o r e
f r o m C a p e S m i t h a n d e x t e n d e d w e s t w a r d t o t h e n o r t h of t h e O t t a w a
I s l a n d s t h r o u g h a p p r o x i m a t e l y 5 9 ° 4 0 ' N a n d 8 2 ° 0 0 ' W. T h e
M o h o r o v i c i c d i s c o n t i n u i t y r i s e s t o d e p t h s of a b o u t 26 k m b e n e a t h
C h e s t e r f i e l d I n l e t a n d B a k e r L a k e . T h e m a n t l e i s a b o u t 40 k m d e e p
a t C h u r c h i l l , M a n i t o b a a n d r i s e s t o a b o u t 30 k m s o m e 130 k m w e s t
of G i l m o u r I s l a n d , t h e n d r o p s t o a l m o s t 4 2 k m f u r t h e r e a s t .
The
sudden drop is related to the Churchill-Superior boundary.
EJ
3.
THE STRUCTURE OF THE CRUST & U P P E R MANTLE ACROSS THE
S U P E R I O R - C H U R C H I L L BOUNDARY F R O M "EARLY RISE" DATA
R. F . M e r e u and J . A. H u n t e r ,
U n i v e r s i t y of W e s t e r n O n t a r i o .
T h e s t r u c t u r e of t h e e a r t h ' s c r u s t a n d u p p e r m a n t l e
u n d e r the C a n a d i a n shield a s d e t e r m i n e d f r o m the P r o j e c t E a r l y
R i s e e x p e r i m e n t of 1966 w i l l b e p r e s e n t e d in t h i s p a p e r . In t h a t
e x p e r i m e n t 39 l a r g e s h o t s w e r e s e t off a t a p p r o x i m a t e l y o n e p o i n t
in L a k e S u p e r i o r . F o r t y o b s e r v a t i o n s of t h e s e s h o t s w e r e m a d e
a l o n g a 1500 k m l i n e r u n n i n g N N W f r o m t h e s h o t l o c a t i o n a c r o s s t h e
Canadian shield. T h i s line c r o s s e d the geological boundary between
the S u p e r i o r province and the younger Churchill province.
The t r a v e l - t i m e curve had 3 b r a n c h e s showing a p p a r e n t
s e i s m i c v e l o c i t i e s of (i) 6. 6 k m / s e c u p t o 2. 4 ° , (ii) 8. 1 k m / s e c f r o m
2. 4 ° t o 6 ° , ( i i i ) a n d 8. 5 k m / s e c f r o m 6 ° t o 13. 4 ° . T h e M o h o r o v i c i c
d i s c o n t i n u i t y w a s f o u n d t o b e r e l a t i v e l y h o r i z o n t a l a t a d e p t h of 33 t o
35 k m u n d e r t h e S u p e r i o r p r o v i n c e w h i l e u n d e r t h e y o u n g e r C h u r c h i l l
p r o v i n c e it w a s t h i c k e r t h a n 40 k m . T h e s e c o n c l u s i o n s w e r e r e a c h e d
by a s s u m i n g t h a t v a r i a t i o n s in the t i m e - t e r m s along t h e line w e r e due
t o v a r i a t i o n s i n c r u s t a l t h i c k n e s s e s . T i m e - t e r m d a t a f r o m t h e 1963
L a k e S u p e r i o r e x p e r i m e n t a n d t h e 1965 H u d s o n B a y e x p e r i m e n t w e r e
u s e d t o h e l p t i e i n b o t h e n d s of t h e t r a v e l t i m e c u r v e . T h e h i g h v e l o c i t y
8. 5 k m . s e c l a y e r w a s f o u n d t o b e a t a d e p t h of 80 k m . V e r y w e a k
a m p l i t u d e s i n t h e d i s t a n c e r a n g e 10° t o 12. 4 ° f o l l o w e d by a l a r g e a m p l i t u d e i n d i c a t e d t h a t t h e r e m a y b e a s l i g h t d e c r e a s e in v e l o c i t y b e g i n n i n g
a t a d e p t h of a p p r o x i m a t e l y 90 k m . A d d i t i o n a l o b s e r v a t i o n s , o b t a i n e d
f r o m s t a t i o n s l o c a t e d on t h e s h i e l d n o r t h of t h e l a k e a t d i s t a n c e s f r o m
300 t o 6 0 0 k m a w a y f r o m t h e s h o t s , s h o w e d t h a t t h e u n u s u a l l y t h i c k
50 k m c r u s t u n d e r L a k e S u p e r i o r i s n o t e x t e n s i v e a n d t h a t n o r m a l
t h i c k n e s s e s of 35 k m a r e r e a c h e d a s o n e m o v e s a w a y f r o m t h e L a k e .
- 98 -
REGIONAL MAGNETIC ANOMALIES, SURFACE MAGNETIZATION,
A N D T H E I R R E L A T I O N S H I P T O C R U S T A L S T R U C T U R E IN T H E
KENORA DISTRICT OF ONTARIO.
D. H . H a l l , U n i v e r s i t y of M a n i t o b a .
Regional m a g n e t i c a n o m a l i e s h a v e b e e n delineated by
n u m e r i c a l f i l t e r i n g of t h e F e d e r a l g o v e r n m e n t a e r o m a g n e t i c m a p
in an a r e a b o u n d e d by l a t i t u d e s 4 8 ° 4 5 ' and 5 0 ° 0 0 ' , and l o n g i t u d e s
93°30' and 95°00'.
T h e s e h a v e b e e n r e l a t e d t o t h e g e o l o g y of t h e a r e a , a n d
t o t h e n a t u r a l r e m a n e n t a n d i n d u c e d m a g n e t i z a t i o n of s u r f a c e r o c k s
sampled a c r o s s the area.
Highs in the r e g i o n a l field a r e found to lie o v e r g r a n i t e
bodies, and lows over Keewatin-type volcanic belts. T h e regional
a n o m a l i e s can be s e p a r a t e d into two t y p e s : t h o s e that a r e r e l a t e d to
s u r f a c e m a g n e t i z a t i o n , and t h o s e r e l a t e d to m a g n e t i z a t i o n at depth.
F r o m i n t e r p r e t a t i o n of t h e l a t t e r a n o m a l i e s , m a g n e t i z a t i o n i s s h o w n
t o e x t e n d in a t l e a s t o n e c a s e t o t h e b o t t o m of t h e g r a n i t i c l a y e r of
the c r u s t .
T h e d i s t r i b u t i o n of s u r f a c e m a g n e t i z a t i o n i n d i c a t e s t h a t
regional tectonic or physical boundaries separate magnetic provinces
rather than lithological boundaries.
GEOLOGICAL I N T E R P R E T A T I O N S OF THE NELSON RIVER AND
KAPUSKASING GRAVITY HIGHS
R . A. G i b b , D o m i n i o n O b s e r v a t o r y of C a n a d a .
The Nelson r i v e r and Kapuskasing gravity highs a r e both
p r o m i n e n t p o s i t i v e a n o m a l o u s a r e a s of t h e g r a v i t y f i e l d of t h e C a n a d i a n
Shield. The Nelson River high h a s been related to the deeply eroded
r o o t s of a f o r m e r P r e c a m b r i a n m o u n t a i n r a n g e , w h e r e a s t h e K a p u s k a s i n g
h i g h h a s b e e n i n t e r p r e t e d a s t h e g r a v i t y e x p r e s s i o n of a d e e p l y e r o d e d
c o u n t e r p a r t of t h e p r e s e n t d a y r i f t v a l l e y s .
A l t h o u g h t h e i n t e r p r e t e d s t r u c t u r a l h i s t o r i e s of t h e s e a r e a s
a r e d i f f e r e n t , t h e y h a v e s e v e r a l f e a t u r e s in c o m m o n . Both g r a v i t y
h i g h s a r e u n d e r l a i n i n p a r t b y f a u l t - b o u n d e d b e l t s of A r c h a e a n g r a n u l i t e
f a c i e s r o c k s , c h a r a c t e r i s t i c a l l y a s s o c i a t e d with g a b b r o i c and a n o r t h o s i t i c i n t r u s i v e b o d i e s . T h e s e b e l t s cut a c r o s s t h e r e g i o n a l g e o l o g i c a l
t r e n d s in b o t h a r e a s . I n t r u s i v e r o c k s , p e r i d o t i t e s a n d a l k a l i n e r o c k s
r e s p e c t i v e l y , o r i g i n a t i n g p e r h a p s f r o m the m a n t l e a r e p r e s e n t at the
- 99 -
s u r f a c e in b o t h a r e a s . T h e g r a v i t y v a r i a t i o n s a r e l o c a l l y r e l a t e d
to t h e s u r f a c e g e o l o g y in both a r e a s but m o d e l s t u d i e s i n d i c a t e t h a t
t h e l a r g e s c a l e r e g i o n a l h i g h s c a n b e i n t e r p r e t e d in t e r m s of u p l i f t e d
d e n s e r p a r t s of t h e l o w e r c r u s t .
EJ
6.
T H E T I M E S O F E M P L A C E M E N T O F A L K A L I N E R O C K S IN C A N A D A
D. Y o r k , R . M . M a c i n t y r e a n d J . G i t t i n s , U n i v e r s i t y of T o r o n t o .
C a r b o n a t i t e s a r e shown by K - A r dating t o h a v e been
e m p l a c e d i n C a n a d a a t i n t e r v a l s o v e r t h e p a s t 1. 7 b i l l i o n y e a r s .
B e c a u s e of t h e a p p a r e n t a s s o c i a t i o n of c a r b o n a t i t e s w i t h r i f t s t r u c t u r e s
i m p o r t a n t i n f o r m a t i o n on t h e t e c t o n i c h i s t o r y of a c o n t i n e n t m a y b e
d e r i v e d f r o m a k n o w l e d g e of c a r b o n a t i t e a g e s . T h e p a t t e r n i n t i m e of
t h e s e a g e s i s d i s c u s s e d a n d t h e p o t e n t i a l s i g n i f i c a n c e of t h e s e b o d i e s
f o r w o r l d - w i d e age c o r r e l a t i o n is e m p h a s i z e d and explained.
EJ
7.
L E A D I S O T O P E R A T I O S IN O R E S A N D IN A D J A C E N T
ROCKS
P . H . R e y n o l d s a n d R . D. R u s s e l l , U n i v e r s i t y of B r i t i s h
Columbia,
A l t h o u g h i s o t o p e s t u d i e s of l e a d i n c e r t a i n s t r a t i f o r m
o r e s h a v e b e e n i n t e r p r e t e d a s d e m o n s t r a t i n g an o r i g i n f r o m a c l o s e d ,
a p p r o x i m a t e l y u n i f o r m p r i m a r y s y s t e m , s t u d i e s of r o c k l e a d s h a v e
o f t e n i n d i c a t e d d e v e l o p m e n t in h e t e r o g e n e o u s , p r o b a b l y o p e n s y s t e m s .
S t u d i e s of a d j a c e n t r o c k s a n d l e a d o r e m i n e r a l s h a v e b e e n u n d e r t a k e n
in o r d e r t o t r y t o r e l a t e t h e s e t w o l i n e s of e v i d e n c e .
At B a l m a t , N e w Y o r k , it h a s b e e n found that the o r e lead
can h a v e n o s i m p l e g e n e t i c r e l a t i o n s h i p with l e a d in n e a r b y g r a n i t i c
r o c k s . In the K o o t e n a y A r c , B r i t i s h C o l u m b i a , two p a t t e r n s e m e r g e .
A s f i r s t s h o w n b y A . J . S i n c l a i r , t h e r e a r e a n u m b e r of o r e d e p o s i t s
containing l e a d which is g e n e t i c a l l y r e l a t e d , and p r o b a b l y r e l a t e d to
S u l l i v a n - l i k e l e a d . L e a d f r o m f e l d s p a r s in t h e N e l s o n B a t h o l i t e d o e s
n o t t a k e p a r t in t h i s r e l a t i o n s h i p , n o r d o l e a d s f r o m t h e B l u e b e l l a n d
other n e a r b y m i n e s that a r e apparently concentrated f r o m the Nelson
Batholith.
EJ
8.
THEORETICAL CALCULATION OF TRACE ELEMENT
COEFFICIENTS
D o n a l d N . S k i b o , G e o l o g i c a l S u r v e y of C a n a d a ,
PARTITION
Ottawa.
T h e i m p o r t a n c e of a n u n d e r s t a n d i n g of t r a c e
element
- 100 -
d i s t r i b u t i o n i n t h e e a r t h a s a f u n c t i o n of t i m e h a s r e c e n t l y b e e n
n o t e d b y L e e (1967) 1 a n d R e y n o l d s e t a l . ( 1 9 6 6 ) 2 , t h e f o r m e r
p o i n t i n g o u t t h e p o s s i b i l i t y of t h e d o m i n a n t r o l e of t r a n s p o r t of
r a d i o a c t i v e e l e m e n t s in t h e e a r t h ' s t h e r m a l h i s t o r y , t h e l a t t e r
n o t i n g t h e l i k e l i h o o d of l a r g e s c a l e m e l t i n g i n a c h o n d r i t i c m o d e l
of t h e e a r t h . A c c o r d i n g l y , w h e r e m e l t i n g h a s o c c u r r e d i n t h e
m a n t l e it w o u l d b e d e s i r a b l e t o h a v e s o m e e s t i m a t e of t h e d i s t r i b u t i o n of r a d i o a c t i v e e l e m e n t s b e t w e e n t h e m o l t e n a n d s o l i d p h a s e s .
U s i n g e l e m e n t a r y s o l i d s t a t e t h e o r y of s o l u t i o n s a n d
a n i d e a l i z e d m o d e l of t h e m o l t e n s t a t e of r o c k f o r m i n g m i n e r a l s a
theoretical expression is derived f o r equilibrium partition coe f f i c i e n t s of t r a c e e l e m e n t s . It i s a s s u m e d t h a t t h e d o m i n a n t m o d e
of t r a c e e l e m e n t i n c o r p o r a t i o n i n t o t h e s o l i d p h a s e i s b y i n c l u s i o n
i n t o a v a c a n c y of o n e of t h e d o m i n a n t c a t i o n i c s p e c i e s ( s u b s t i t u t i o n a l
solid solution f o r m a t i o n ) . E n e r g y changes due to polarization, elastic
strain, coulomb, charge-dipole and ionic dipole-dipole interations a r e
t a k e n i n t o a c c o u n t in s o l i d s o l u t i o n f o r m a t i o n .
T h e r e s u l t s of s u c h a t h e o r y a p p l i e d t o a m o d e l of t h e
e a r t h w i t h s o l i d i f i c a t i o n of t h e m a n t l e f r o m t h e b a s e u p w a r d s i s f o u n d
t o y i e l d c a l c u l a t e d v a l u e s of c r u s t a l e l e m e n t a b u n d a n c e s w h i c h a g r e e
w i t h o b s e r v e d v a l u e s w i t h i n l i m i t s of e x p e r i m e n t a l e r r o r .
Improvem e n t s and f u r t h e r w o r k in t h e o r y , e x p e r i m e n t and o b s e r v a t i o n a l d a t a
n e c e s s a r y b e f o r e such theory can be reliably applied a r e d i s c u s s e d .
T h e p o s s i b l e a c c p l i c a t i o n of s u c h t h e o r e t i c a l p a r t i t i o n c o e f f i c i e n t
s t u d i e s t o p r o b l e m s c o n n e c t e d w i t h i s o t o p i c s t u d i e s of o r e d e p o s i t i o n
and o r o g e n e s i s a r e also noted.
EJ
9.
1.
W. H . K . L e e , T h e m a l H i s t o r y of t h e E a r t h ,
V o l . 4 8 , N o . 1, 1967.
Trans.
2.
R . T . B e y n o l d s , P . E . F r i c k e r a n d A. L . S u m m e r s , E f f e c t s of
m e l t i n g u p o n t h e r m a l m o d e l s of t h e E a r t h , J o u r . G e o p h y s . R e s . ,
V o l . 71, N o . 2, 1966, p . 5 7 3 - 5 8 1 .
VISCOSITY OF T H E U P P E R M A N T L E
R, K. M c C o n n e l l , A r t h u r D. L i t t l e I n c . , C a m b r i d g e ,
E J 10.
A.G.U.
INVITED P A P E R :
Mass.
THERMAL HISTORY OF THE EARTH
J . A . J a c o b s , U n i v e r s i t y of B r i t i s h C o l u m b i a .
- 101 -
Session F J
FRIDAY,
J U N E 23, 2:00 p . m .
H E A L T H P H Y S I C S S Y M P O S I U M (B)
FJ
1.
" R A D I A T I O N S A F E T Y IN T H E L I N A C L A B O R A T O R Y O F T H E
UNIVERSITY OF TORONTO"
J . H . A i t k e n , E . W. H o r r i g n a , J . W. H u n t , K. G.
U n i v e r s i t y of T o r o n t o , T o r o n t o , O n t a r i o .
McNeill,
A r e p o r t -will b e g i v e n of t h e p r a c t i c e s a n d p r o c e d u r e s
d e v e l o p e d s o f a r t o e n s u r e s a f e o p e r a t i o n of t h e U n i v e r s i t y ' s L i n a c
L a b o r a t o r y . A m o n g t h e t o p i c s t o b e m e n t i o n e d w i l l b e , t y p e s of
r a d i a t i o n h a z a r d , c o n t r o l of e x p e r i m e n t s p e r f o r m e d o n t h e l i n a c ,
c o n t r o l of d a n g e r o u s a r e a s , i n s t r u m e n t a t i o n f o r r a d i a t i o n s a f e t y ,
i n t e r l o c k s , a n d r e s u l t s of r a d i a t i o n s u r v e y s .
FJ
2.
L I M I T A T I O N S ON T H E E V A L U A T I O N O F S H I E L D I N G
A G A I N S T S O U R C E S A T AN I N T E R F A C E
C. C l i f f o r d , D e f e n s e R e s e a r c h B o a r d , S h i r l e y B a y ,
PROTECTION
Ontario.
P r e s e n t techniques f o r calculating shielding protection
a g a i n s t y s o u r c e s w e r e d e v e l o p e d l a r g e l y f r o m c a l c u l a t i o n s of t h e
t r a n s p o r t of y r a d i a t i o n f r o m i s o t r o p i c s o u r c e s i m b e d d e d i n i n f i n i t e
h o m o g e n e o u s m e d i a . T o apply t h e s e infinite m e d i u m calculations to
a c t u a l p r o b l e m s s i m p l i f y i n g a s s u m p t i o n s w e r e m a d e and, by c o m p a r i s o n
w i t h c o r r e s p o n d i n g e x p e r i m e n t s , t h e m e t h o d s of a p p l i c a t i o n w e r e r e f i n e d
t o d e v e l o p a s h i e l d i n g m e t h o d o l o g y . In g e n e r a l g o o d a g r e e m e n t i s o b s e r v e d b e t w e e n c a l c u l a t e d s h i e l d i n g v a l u e s a n d t h e r e s u l t s of e x p e r i m e n t s
t h a t s a t i s f y the a s s u m p t i o n s u s e d in the c a l c u l a t i o n s .
H o w e v e r , a s t h e a m o u n t of s h i e l d i n g p r o t e c t i o n i s i n c r e a s e d
it i s n e c e s s a r y t o r e c o n s i d e r s o m e of t h e a s s u m p t i o n s on w h i c h t h e c a l c u l a t i o n s a r e b a s e d a n d a l s o t o c o n s i d e r t h e i m p o r t a n c e of t h e l o w - e n e r g y
c o m p o n e n t of t h e r a d i a t i o n on t h e a c c u r a c y of s h i e l d i n g e s t i m a t e s .
The
f a c t o r s that can affect the shielding protection calculated f o r y s o u r c e s
n e a r a n i n t e r f a c e a r e r e v i e w e d t o s h o w t h e i r i n f l u e n c e on t h e a c c u r a c y
of s h i e l d i n g e s t i m a t e s a n d t h e e x t e n t t o w h i c h t h e y l i m i t t h e a c c u r a c y
a s t h e d e g r e e of p r o t e c t i o n i s i m p r o v e d . A t p r e s e n t , i n t e r f a c e r o u g h n e s s could limit a c c u r a c y at all levels while the l o w - e n e r g y r e s p o n s e
of d e t e c t o r s i s i n c r e a s i n g l y i m p o r t a n t at h i g h p r o t e c t i o n l e v e l s .
- 102 -
FJ
3.
R A D I A T I O N S U R V E Y S ON A N D A B O U T X - R A Y M A C H I N E S
L O C A T E D IN M A N I T O B A H O S P I T A L S
E . M. C a m p b e l l , P h y s i c s D e p a r t m e n t ,
T r e a t m e n t and R e s e a r c h Foundation.
The Manitoba Cancer
R a d i a t i o n p r o t e c t i o n s u r v e y s h a v e b e e n c o n d u c t e d on
a n d a b o u t 150 d i a g n o s t i c x - r a y i n s t a l l a t i o n s in M a n i t o b a h o s p i t a l s .
T h e s e s u r v e y s i n v o l v e d c h e c k i n g v a r i o u s a s p e c t s of e a c h i n s t a l l a t i o n
t o a s c e r t a i n w h e t h e r t h e y c o m p l i e d w i t h t h e R e c o m m e n d a t i o n s of t h e
I n t e r n a t i o n a l C o m m i s s i o n o n R a d i o l o g i c a l P r o t e c t i o n . In a d d i t i o n ,
in o r d e r t h a t t h e u s e r of t h e e q u i p m e n t b e a w a r e of t h e m a g n i t u d e of
the e x p o s u r e obtained during diagnostic p r o c e d u r e s employed in the
d e p a r t m e n t , m e a s u r e m e n t s w e r e m a d e of t h e e x p o s u r e r a t e s , q u a l i t i e s ,
etc, f o r the v a r i o u s t e c h n i q u e s involved. T h i s p a p e r will p r o v i d e a
s u m m a r y of t h e s e s u r v e y s .
FJ
4.
H U M A N D O S E E F F E C T S T U D I E S A N D F U T U R E T R E N D S IN T H E S E
STUDIES
J o h n D. A b b a t t , R a d i a t i o n P r o t e c t i o n D i v i s i o n , O t t a w a ,
Ontario.
A n e v a l u a t i o n of r i s k f a c t o r s a s s o c i a t e d w i t h l o n g t e r m
l o w d o s e r a d i a t i o n e f f e c t s in m a n c a n o n l y b e o b t a i n e d f r o m o b s e r v a t i o n a n d q u a n t i t a t i o n of e f f e c t s a n d l a c k of e f f e c t s in e x p o s e d
populations.
S t u d i e s a l r e a d y c a r r i e d o u t , o r in p r o g r e s s , i n c l u d e
w o r k o n l e u k a e m i a , b o n e t u m o u r s a n d g e n e r a l c a n c e r i n c i d e n c e in
a d u l t s , a n d l e u k a e m i a a n d c a n c e r in c h i l d r e n .
T h e i r r a d i a t e d p o p u l a t i o n s h a v e in the m a i n b e e n c o m p o s e d
of J a p a n e s e b o m b s u r v i v o r s , I r r a d i a t e d a r t h r i t i c s , r a d i u m c a s e s ,
u r a n i u m m i n e r s , c h i l d r e n i r r a d i a t e d in u t e r o and s e v e r a l o t h e r s e r i e s
of t h e r a p e u t i c a l l y i r r a d i a t e d i n d i v i d u a l s .
M a n y of t h e s e s t u d i e s w e r e i n i t i a t e d w h e n o u r k n o w l e d g e
of r a d i a t i o n e f f e c t s a n d m e c h a n i s m s w a s e v e n l e s s c o m p l e t e t h a n it
i s n o w and t h e f i n d i n g s a r e in m o s t c a s e s only s e m i q u a n t i t a t i v e and
tend to r e l a t e to r e l a t i v e l y high dose situations.
None
as to
ation
from
of t h e s t u d i e s s o f a r u n d e r t a k e n h a v e b e e n d e s i g n e d in s u c h a w a y
g i v e a n y u s e f u l i n f o r m a t i o n on t h e m e c h a n i s m s of a c t i o n of r a d i at the s u b c e l l u l a r and c e l l u l a r level. T o obtain t h i s i n f o r m a t i o n
f u t u r e epidemiologic studies they m u s t be ecologically oriented.
- 103 -
To achieve this a i m such studies m u s t have m u c h m o r e detailed
i n t e r d i s c i p l i n a r y p r o s p e c t i v e planning and i m p l e m e n t a t i o n than
h a s b e e n t h e c a s e in t h e p a s t .
S o m e of t h e p o p u l a t i o n s p o t e n t i a l l y a v a i l a b l e w i l l b e
m e n t i o n e d a n d c e r t a i n s u g g e s t i o n s of a r a t h e r g e n e r a l n a t u r e w i l l
b e m a d e r e l a t i n g t o t h e f a c t o r s t o b e s t u d i e d a n d t h e d i r e c t i o n of
study.
FJ
5.
DELAYED DEATH OF IRRADIATED YEAST
Allen P.
James,
CRNL, Chalk River,
CELLS
Ontario.
P e d i g r e e a n a l y s i s of i n d i v i d u a l X - i r r a d i a t e d y e a s t
cells is being u s e d to study r a d i a t i o n - i n d u c e d lethal d a m a g e and
its repair.
D e a t h i s u s u a l l y d e l a y e d , a n d t h i s d e l a y i s of t w o t y p e s .
In o n e t y p e , d e a t h of a l l d e s c e n d a n t s of a c e l l o c c u r s a f t e r a v a r i a b l e
n u m b e r of c e l l g e n e r a t i o n s . In t h e o t h e r t y p e , c l u s t e r s of l y s i n g
cells, or lethal sectors, appear sporadically among cells capable
of i n d e f i n i t e r e p r o d u c t i o n . A l t h o u g h l e t h a l s e c t o r i n g o c c u r s w i t h
d e c r e a s i n g f r e q u e n c y t h r o u g h a d v a n c i n g g e n e r a t i o n s , it i s p o s s i b l e
t o i s o l a t e l i n e s in w h i c h s e c t o r i n g p e r s i s t s i n d e f i n i t e l y . T h e a m o u n t
of s e c t o r i n g v a r i e s b e t w e e n t h e s e l i n e s . D a t a s u g g e s t t h a t m u c h
r a d i a t i o n - i n d u c e d d e a t h i s a c o n s e q u e n c e of i n d u c e d i n s t a b i l i t y , a n d
t h a t a p r o p o r t i o n of t h e d a m a g e c a u s i n g d e a t h of a l l d e s c e n d a n t s of
an i r r a d i a t e d cell is qualitatively r e l a t e d to that r e s p o n s i b l e f o r
lethal sectoring.
FJ
7.
THE FEASIBILITY OF A NEW PROCEDURE FOR BIOLOGICAL
DOSIMETRY
J . F . W h i t f i e l d , D i v i s i o n of R a d i a t i o n B i o l o g y , N a t i o n a l R e s e a r c h
Council, Ottawa.
In t h i s t a l k it w i l l b e s h o w n t h a t t h e p r o p o r t i o n of r a t
a s well a s h u m a n l y m p h o c y t e s with s t r u c t u r e l e s s (or pycnotic)
n u c l e i c a n s e r v e a s a s e n s i t i v e i n d i c a t o r of a b s o r v e d r a d i a t i o n d o s e
(following an a c u t e exposure) provided that the i r r a d i a t e d cells a r e
r e m o v e d f r o m t h e b l o o d a n d m a i n t a i n e d in a g l u c o s e - p h o s p h a t e m e d i u m .
A t t h e p r e s e n t s t a g e of d e v e l o p m e n t t h e " d o s i m e t e r " i s p a r t i c u l a r l y
s e n s i t i v e t o d o s e s b e t w e e n 0 a n d 100 R . A b o v e 100 R , t h e s l o p e of t h e
l i n e a r d o s e - e f f e c t c u r v e t e n d s to d e c r e a s e and the " d o s i m e t e r " b e c o m e s
less sensitive.
- 104 -
FJ
8.
C Y T O G E N E T I C S IN T H E A S S E S S M E N T O F C H R O N I C H U M A N
RADIATION E X P O S U R E F R O M I N T E R N A L E M I T T E R S
M. R. Q u a s t e l , R a d i a t i o n P r o t e c t i o n D i v i s i o n ,
Ottawa.
T h e p r o p e r t y of i o n i z i n g r a d i a t i o n of i n d u c i n g c h r o m o s o m a l
a b e r r a t i o n s h a s b e e n u s e d b y a n u m b e r of w o r k e r s f o r t h e e v a l u a t i o n
of h u m a n r a d i a t i o n e x p o s u r e . T h e a c c u m u l a t i o n of i n t e r p h a s e d a m a g e
i n a p r o p o r t i o n of t h e c i r c u l a t i n g l y m p h o c y t e p o p u l a t i o n , w h i c h p r o b a b l y
p e r s i s t s f o r r e l a t i v e l y l o n g p e r i o d s of t i m e , a f f o r d s a r a t i o n a l e f o r
t h e q u a n t i t a t i v e a s s e s s m e n t of c h r o n i c r a d i a t i o n e x p o s u r e .
D i f f e r e n c e s i n t h e t y p e of f r e q u e n c y of a b n o r m a l i t i e s
obtained in h u m a n s e x p o s e d to d i f f e r e n t r a d i o n u c l i d e s such a s r a d i o c e s i u m , u r a n i u m , t h o r i u m a n d r a d i u m w i l l b e d i s c u s s e d in t e r m s of
body b u r d e n a n d a v a i l a b l e i n f o r m a t i o n on n e o p l a s t i c i n c i d e n c e .
T h e u s e a n d l i m i t a t i o n s of t h i s t e c h n i q u e w i l l b e d i s c u s s e d
w i t h p a r t i c u l a r r e f e r e n c e t o i t s a p p l i c a t i o n t o l a r g e n u m b e r s of p e o p l e
and to p r o b l e m s a s s o c i a t e d with n o n - r a d i a t i o n induced c h r o m o s o m e
aberrations.
FJ
9.
C H E M I C A L C O M P O S I T I O N O F A L G I N A T E IN R E L A T I O N O F I T S
AFFINITY T O RADIOACTIVE STRONTIUM
Y. T a n a k a , D. W a l d r o n - E d w a r d , a n d S. C . S k o r y n a ,
R e s e a r c h Laboratory, McGill University, Montreal.
Gastro-Intestinal
In 1964 it w a s r e p o r t e d f r o m t h i s l a b o r a t o r y t h a t a l g i n i c
a c i d s p e c i f i c a l l y i n h i b i t s a b s o r p t i o n of r a d i o a c t i v e s t r o n t i u m f r o m t h e
i n t e s t i n e of r a t s . O t h e r g r o u p s c o n f i r m e d t h i s f i n d i n g i n c a t s , p i g s ,
and h u m a n s u b j e c t s . Alginate a d m i n i s t r a t i o n is an effective and
s i m p l e m e t h o d of r e d u c i n g t h e h e a l t h h a z a r d of r a d i o a c t i v e s t r o n t i u m :
e f f e c t i v e b e c a u s e u p t o 87% of i n g e s t e d r a d i o s t r o n t i u m c a n b e r e m o v e d
b e f o r e a b s o r p t i o n , and s i m p l e b e c a u s e the m e t h o d is " p o r t a b l e " - that
is, d o s a g e s c h e d u l e s can be a d j u s t e d readily to p a r t i c u l a r locations,
s p e c i e s a n d d e g r e e s of c o n t a m i n a t i o n .
S o d i u m a l g i n a t e w a s p r e p a r e d f r o m v a r i o u s s p e c i e s of
b r o w n s e a w e e d b y (1) a c i d i f i c a t i o n w i t h HC1, (2) e x t r a c t i o n w i t h
s o d i u m c a r b o n a t e , a n d (3) p r e c i p i t a t i o n w i t h e t h a n o l . T h e r a t i o of
m a n n u r o n i c t o g u l u r o n i c a c i d w a s d e t e r m i n e d b y (1) a c i d h y d r o l y s i s ,
(2) f r a c t i o n a t i o n on D o w e x - 1 r e s i n , a n d (3) o r c i n o l r e a c t i o n .
3
- 105 -
A l g i n i c a c i d i s a g e n e r a l t e r m f o r 1, 4 - l i n k e d p o l y u r o n i c a c i d i n b r o w n s e a w e e d s , w h i c h c o n s i s t of D - m a n n u r o n i c a n d
L - g u l u r o n i c a c i d . T h e r a t i o of t h e s e two u r o n i c a c i d s d i f f e r s
w i d e l y f r o m s p e c i e s to s p e c i e s . S o d i u m a l g i n a t e p r e p r a t i o n s of h i g h
g u l u r o n i c a c i d c o n t e n t w e r e f o u n d to b e m o r e e f f e c t i v e i n i n h i b i t i n g
a b s o r p t i o n of s t r o n t i u m t h a n t h o s e of h i g h m a n n u r o n i c a c i d c o n t e n t .
T h e p r e s e n t r e p o r t d e a l s w i t h (1) a b s o r b a b i l i t y a n d s t r u c t u r e of
s t r o n t i u m b i n d e r s , (2) d i f f e r e n c e s i n a c t i v i t y of p r e p a r a t i o n s ,
(3) s t e r e o c h e m i c a l r e l a t i o n s h i p s .
- 106 -
Session F L
F R I D A Y , J U N E 23, 2 : 0 0 p . m .
E A R T H P H Y S I C S IV
G. D. G a r l a n d ,
FL
1.
Chairman
GEOLOGICAL I N T E R P R E T A T I O N OF ISOTOPIC AGE DATA
C. T. H a r p e r ,
U n i v e r s i t y of T o r o n t o .
T h e a p p l i c a t i o n of i s o t o p i c d a t i n g m e t h o d s t o a w i d e r
v a r i e t y of g e o l o g i c a l m a t e r i a l s a n d a n a p p r e c i a t i o n of t h e m o b i l i t y
of r a d i o g e n i c d a u g h t e r p r o d u c t s u n d e r t h e P , T c o n d i t i o n s e n c o u n t e r e d
i n t h e e a r t h ' s c r u s t a r e l e a d i n g t o a b e t t e r u n d e r s t a n d i n g of t h e p r o c e s s e s i n v o l v e d i n c r u s t a l e v o l u t i o n . T h e t e c t o n i c e v o l u t i o n of o r o g e n i c
b e l t s can be r e s o l v e d by detailed K - A r studies. E x a m p l e s f r o m the
B r i t i s h Caledonides, N o r t h e r n A p p a l a c h i a n s , and the Greriville P r o v i n c e
are discussed.
FL
2.
GEOPHYSICAL INVESTIGATION OF THE EARTH'S CRUST AND U P P E R
M A N T L E IN A L B E R T A
E . R . K a n a s e w i c h a n d R . M . C l o w e s , U n i v e r s i t y of A l b e r t a .
Deep s e i s m i c reflection studies have been combined
with gravity and m a g n e t i c o b s e r v a t i o n s to obtain a c r u s t a l section
in s o u t h e r n A l b e r t a . S e v e r a l r e f l e c t i n g h o r i z o n s a p p e a r to be
c o n t i n u o u s o v e r d i s t a n c e s of a t l e a s t 30 k i l o - m e t e r s a n d t h e s e o u t l i n e a m a j o r e a s t - w e s t g r a b e n i n t h e t w o b i l l i o n y e a r old b a s e m e n t .
M a n y k i l o m e t e r s of s t r u c t u r a l r e l i e f o c c u r o n a d e e p r e f l e c t i n g h o r i z o n
n e a r a d e p t h of 30 k i l o m e t e r s a n d d i p s of 2 0 ° a r e o b s e r v e d .
A
c o m b i n â t i o n of s e i s m i c v e l o c i t i e s a n d B o u g u e r a n o m a l i e s i s u s e d t o
d e v e l o p a m o d e l of t h e c r u s t a n d t h i s i n d i c a t e s t h a t d e n s i t y c h a n g e s in
t h e u p p e r m a n t l e a r e n e c e s s a r y . R e f l e c t e d e n e r g y f r o m d e p t h s of 40
t o 47 k i l o m e t e r s a l o n g t h e p r o f i l e p r o v i d e s e v i d e n c e f o r a s h a r p v e l o c i t y
d i s c o n t i n u i t y a t t h e b a s e of t h e c r u s t . T h i s m a y b e i n t e r p r e t e d a s
favoring the hypothesis that the Mohorovicic discontinuity is a chemical
change f r o m basalt to peridotite.
- 107 -
A R E V I E W O F G E O P H Y S I C A L F I N D I N G S IN T H E L A K E S U P E R I O R
REGION
H. C . H a l l s a n d C . F . W e s t , U n i v e r s i t y of T o r o n t o .
Continuing g e o p h y s i c a l s t u d i e s in the Lake S u p e r i o r
r e g i o n a r e l e a d i n g to a n i m p r o v e d p i c t u r e of t h e r e g i o n a l g e o l o g y
and the c r u s t a l s t r u c t u r e .
T h e 1963 s e i s m i c s u r v e y r e v e a l e d a n
u n u s u a l l y t h i c k c r u s t u n d e r t h e e a s t - c e n t r a l p a r t of t h e l a k e , a n d
i n d i c a t e d that the v o l c a n i c f l o w s s e e n o u t c r o p p i n g a r o u n d the edge
of t h e l a k e f o r m a c o n t i n u o u s b a s i n b e n e a t h i t , r e a c h i n g a d e p t h
of o v e r 10 k m . T h e 1966 E a r l y R i s e p r o g r a m h a s s h o w n t h a t t h e
c r u s t a l t h i c k n e s s r e t u r n s to m o r e n o r m a l v a l u e s e a s t of t h e l a k e .
M a g n e t i c , g r a v i t y and i n t e r m e d i a t e r a n g e r e f r a c t i o n s u r v e y s
h a v e d e f i n e d t h e e x t e n t of t h e K e w e e n a w a n b a s i n , a n d g i v e s o m e
i n d i c a t i o n of t h e t h i c k n e s s of t h e v o l c a n i c f l o w s , a n d r e v e a l s o m e
m a j o r f a u l t s . The s u r v e y s a l s o i n d i c a t e that the f l a t - l y i n g , L a t e
K e w e e n a w a n s e d i m e n t a r y r o c k s w h i c h o u t c r o p o n t h e s h o r e s of
t h e s o u t h e a s t p a r t of t h e l a k e a r e to b e f o u n d u n d e r l y i n g a t l e a s t
t h e c e n t r a l p a r t , a n d p r o b a b l y a l l of t h e l a k e b a s i n .
A PRELIMINARY INTERPRETATION OF THE
CRUSTAL EXPERIMENT
K. G. B a r r a n d M . J . B e r r y ,
YELLOWKNIFE
Dominion Observatory.
T h e Y e l l o w k n i f e c r u s t a l e x p e r i m e n t i n A u g u s t 1966
involved ten r e c o r d i n g s c r e w s and s e v e n t e e n l a r g e shots d i s t r i b u t e d o v e r a n a r e a of 150, 000 s q u a r e m i l e s : p a r t of t h e e x p e r i m e n t
p r o d u c e d a r e v e r s e d p r o f i l e , 500 m i l e s l o n g , t h r o u g h Y e l l o w k n i f e
and U r a n i u m City.
A p r e l i m i n a r y i n t e r p r e t a t i o n of t h e f i r s t a r r i v a l
d a t a by the t i m e - t e r m and p r o f i l e m e t h o d s i n d i c a t e s a s i m p l e ,
m o d e r a t e l y t h i c k c r u s t w i t h no e v i d e n c e of i n t e r m e d i a t e l a y e r s
a n d a n o r m a l P n v e l o c i t y . T h e p r e s e n t s t a t u s of t h e i n t e r p r e t a tion will be given.
A C R U S T - M A N T L E P R O F I L E F R O M M O U L D B A Y , N. W. T . ,
C A N A D A T O T U C S O N , A R I Z O N A , U. S. A.
K. P e c a n d A. J . W i c k e n s ,
Dominion Observatory.
Love wave phase velocities w e r e calculated f o r six
a d j a c e n t s e g m e n t s of a 5000 k m g r e a t c i r c l e p a t h f r o m M o u l d
B a y , C a n a d a to T u c s o n , A r i z o n a , u s i n g , w h e r e a v a i l a b l e , s e i s m o g r a m s in both d i r e c t i o n s .
- 108 -
T h e e f f e c t of a s l o p i n g m a n t l e l o w v e l o c i t y c h a n n e l
w a s o b s e r v e d f o r t h e s e g m e n t s f r o m M o u l d B a y to E d m o n t o n .
FL
6.
A R A Y T H E O R Y IN I N H O M O G E N E O U S E L A S T I C M E D I A
Ravi Ravindra,
Dalhousie University.
In a d d i t i o n t o t h e h i g h f r e q u e n c y r e s t r i c t i o n , t h e
r a y t h e o r y i n s e i s m o l o g y i s l i m i t e d t o s m a l l a n g l e s of i n c i d e n c e .
T h e v a l i d i t y of t h e u s e of r a y s f o r a r b i t r a r y a n g l e s w i l l b e
e x a m i n e d w i t h r e f e r e n c e to t h e e x a c t s o l u t i o n f o r a n i n h o m o g e n e o u s
e l a s t i c m e d i u m w i t h l i n e a r v a r i a t i o n of v e l o c i t y .
FL
7.
ON M A L K U S ' P R E C E S S I O N - D R I V E N G E O M A G N E T I C DYNAMO
M . G. R o c h e s t e r , U n i v e r s i t y of W a t e r l o o , D. E . S m y l i e a n d
K . F . C h o n g , U n i v e r s i t y of W e s t e r n O n t a r i o .
E l s a s s e r and B u l l a r d d i s m i s s e d the l u n i s o l a r
p r e c e s s i o n as a p o s s i b l e driving m e c h a n i s m f o r the m a g n e t o h y d r o d y n a m i c d y n a m o in t h e E a r t h ' s c o r e , but M a l k u s (1963)
h a s s u g g e s t e d t h a t p r e c e s s i o n a l t o r q u e s m a y b e a d e q u a t e to s u s t a i n
d y n a m o a c t i o n . A s y e t , no d e t a i l e d c r i t i c a l r e v i e w of h i s t h e o r y
h a s b e e n p u b l i s h e d , b u t a p r e l i m i n a r y s t u d y of t h i s a d m i t t e d l y
c o m p l i c a t e d p a p e r by the p r e s e n t a u t h o r s h a s r e v e a l e d what a p p e a r
t o b e s e r i o u s e r r o r s i n t h e m a t h e m a t i c a l t r e a t m e n t of t h e c o r e
m a g n e t o h y d r o d y n a m i c s a n d t h e c o r e - m a n t l e d y n a m i c s . We m u s t
conclude that M a l k u s has not, in f a c t , e s t a b l i s h e d the p o s s i b i l i t y
of a p r e c e s s i o n - d r i v e n d y n a m o .
(1)
FL
8.
Malkus,
W.V.R.,
9.
2871.
F I E L D USE O F DIGITAL DATA PROCESSORS
B . D. L o n c a r e v i c ,
FL
1963, J . G e o p h y s . R e s . ^ 8 ,
B e d f o r d I n s t i t u t e of O c e a n o g r a p h y .
NUMERICAL F I L T E R S FOR THE EXTRACTION OF DISPERSED
S U R F A C E WAVES F R O M SEISMOGRAMS
G . C l a r k e , U n i v e r s i t y of T o r o n t o .
A d i s p e r s i v e s e i s m i c signal can be r e g a r d e d a s a
n o n s t a t i o n a r y r a n d o m p r o c e s s s i n c e a s t a t i s t i c a l d e s c r i p t i o n of
such a signal m u s t be t i m e - d e p e n d e n t . The instantaneous autoc o r r e l a t i o n function and the i n s t a n t a n e o u s power s p e c t r u m a r e
d e f i n e d to d e s c r i b e t h e n o n s t a t i o n a r y p r o c e s s . F i l t e r s f o r e x t r a c t i n g
- 109 -
dispersive seismic waves are designed using a generalization
of t h e W i e n e r o p t i m u m f i l t e r t h e o r y t o i n c l u d e n o n s t a t i o n a r y
p r o c e s s e s . If t h e f i l t e r i s r e s t r i c t e d to b e i n g a t i m e - v a r i a b l e
delay line then an o p t i m u m digital f i l t e r can be designed.
A p p l i c a t i o n of t h e o p t i m u m f i l t e r t h e o r y to t h e t i m e - v a r y i n g
deconvolution p r o b l e m in r e f l e c t i o n s e i s m o l o g y is also possible.
F L 10.
T H E R E Q U I R E M E N T FOR AN I N T E R N A T I O N A L R E F E R E N C E
MAGNETIC FIELD
E. Dawson,
Dominion Observatory.
C o m p a r i s o n s w e r e m a d e of t h r e e r e c e n t m o d e l s of
t h e m a i n g e o m a g n e t i c f i e l d a n d t h e l a t e s t Z - c h a r t of C a n a d a f o r
e p o c h 1 9 6 5 . A l t h o u g h t h e s p h e r i c a l h a r m o n i c c o e f f i c i e n t s of
t h r e e r e c e n t m o d e l s (i) R . G. O . (ii) U. S. C . & G. S. ( i i i ) N A S A ,
a p p e a r to a g r e e q u i t e c l o s e l y , d i f f e r e n c e s of t h e o r d e r of 6 0 0 y
do o c c u r . W h i l e d i f f e r e n c e s of t h i s o r d e r m i g h t b e e x p e c t e d
o v e r p o o r l y s u r v e y e d a r e a s of t h e w o r l d , o n e e q u a l l y e x p e c t s
t h e w e l l s u r v e y e d a r e a s , s u c h a s C a n a d a , to h a v e c o n s i d e r a b l e
i n f l u e n c e o n t h e m a g n i t u d e of t h e c o e f f i c i e n t s . T h e i n e q u a l i t i e s
a r e a s c r i b e d to t h r e e p r i n c i p a l s o u r c e s .
1) s e c u l a r c h a n g e d i s c r e p a n c i e s ,
2) v a r y i n g t i m e l e n g t h s of i n p u t d a t a ,
3) d i f f e r i n g t e c h n i q u e s i n d e r i v i n g t h e S. H. A.
F L 11.
T H E R O L E O F T H E I N V A R I A B L E P E N D U L U M IN G R A V I T Y
MEASUREMENTS
H . D. V a l l i a n t ,
Dominion Observatory.
T h e s t a t e - o f - t h e - a r t of t h e p e n d u l u m m e t h o d f o r
r e l a t i v e g r a v i t y m e a s u r e m e n t s is b r i e f l y s u r v e y e d in this p a p e r .
T h e c o n t i n u i n g n e e d f o r p e n d u l u m m e a s u r e m e n t s to p r o v i d e a
c a l i b r a t i o n s t a n d a r d and n e t w o r k c o n t r o l is outlined. The t h e o r y
of t h e b i - p e n d u l u m m e t h o d a l o n g w i t h i t s i n h e r e n t p r o b l e m s a n d
s o u r c e s of e r r o r i s r e v i e w e d .
T h e s o l u t i o n to t h e s e p r o b l e m s ,
e s p e c i a l l y a s r e l a t e d to t h e C a n a d i a n P e n d u l u m a p p a r a t u s , i s
discussed.
T h e p r e c i s i o n a n d b e h a v i o u r of t h e C a n a d i a n p e n d u l u m s
a r e c o m p a r e d w i t h t h o s e of o t h e r c o n t e m p o r a r y p e n d u l u m a p p a r a t u s .
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