Nuclear Data Project at
McMaster University
Status Report: April 1, 2011 to Jan 31, 2013
Balraj Singh
McMaster University
IAEA-NSDD-2013
KFAS, Kuwait, January 27-31, 2013
Nuclear Structure and Decay Data
Balraj Singh, Jun Chen, John Cameron, Michael Birch, Ervin Thiagalingam
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ENSDF evaluations; training workshops
XUNDL (includes papers on Atomic masses)
NSR (includes papers on nuclear reactions)
Topical Evaluations: B(E2) for first 2+ states;
Beta-delayed neutron (BD-N) emitters: %Pn, T1/2
• Collaborative research projects
• Does not include Alan Chen’s active experimental Nuclear
Astrophysics program, and data evaluation of relevant reaction rates
ENSDF: NSDD: Permanent Responsibility
A=1 (2005)
A=31 (1998, update at galley stage)
A=64 (2007)
A=32 (2011)
A=89 (2013)
A=33 (2011)
A=34 (2012)
A=98 (2003)
A=35 (2011)
A=100 (2008)
A=36 (2011)
A=149 (2004)
A=37 (2012)
A=151 (2009)
A=38 (2008)
A=164 (2001, updated: pre-rev stage)
A=39 (2006)
A=40 (2004)
A=188 (2002; update at other center)
A=41 (2001)
A=190 (2003); update in progress)
A=42 (2001, updated: pre-rev stage)
A=194 (2006)
A=43 (2001, updated: post-rev stage)
A=44 (2011)
During 2011-13, work was also done on several other A-chains and
nuclides, which are outside McMaster’s A-chain responsibility
ENSDF: A-chain Evaluations Published in NDS
(April 1, 2011 to Jan 31, 2013)
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A=33:
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A=32: C. Ouellet and B. Singh, NDS 112, 2199-2355 (2011)
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A=44:
J. Chen, B. Singh and J.A. Cameron, NDS 112, 2357-2495 (2011)
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A=35:
J. Chen, J. Cameron and B. Singh, NDS 112, 2715-2850 (2011)
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A=36:
N. Nica, J. Cameron and B. Singh, NDS 113, 1-155 (2012)
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A=37: J. Cameron, J. Chen, B. Singh, N. Nica, NDS 113, 365-514 (2012)
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A=62:
A.L. Nichols, B. Singh and J.K. Tuli, NDS 113, 973-1114 (2012)
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A=77:
B. Singh and N. Nica, NDS 113, 1115-1314 (2012)
A=34:
N. Nica and B. Singh , NDS 113, 1563-1733 (2012)
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A=89:
B. Singh, NDS 114, 1-208 (2013)
J. Chen and B. Singh, NDS 112, 1393-1511 (2011)
ENSDF: A-chain Evaluations Submitted for NDS
April 1, 2011 to Jan 31, 2013
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A=44 and 62: submitted May 2011 and Sept 2011; published in 2012.
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A=75:
A. Negret and B. Singh (submitted July 2011) (post-review stage)
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A=43:
B. Singh and J. Chen (submitted Sept 2011) (post-review stage)
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A=42:
J. Chen and B. Singh (submitted Sept 2012) (pre-review stage)
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A=164: B. Singh and J. Chen (submitted Sept 2012) (pre-review stage)
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A=211:
IAEA-ICTP-2012 workshop (submitted Sept 2012) (post-review stage) .
(This work is being coordinated by B. Singh)
ENSDF: A-chain Evaluations in pipeline for NDS
April 1, 2011 to Jan 31, 2013
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A=31:
C. Ouellet and B. Singh (submitted Sept 2009) (galley stage) (*)
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A=85:
B. Singh and J. Chen (submitted Sept 2009) (post-review stage) (*)
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A=61:
K. Zuber and B. Singh (submitted Sept 2010) (review stage) (*)
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A=129: J. Timar, Z. Elekes and B. Singh (submitted Sept 2010) (post-review) (*)
ENSDF: Nuclide Evaluations of Nuclides for ENSDF
April 1, 2011 to Jan 31, 2013
• 80 nuclides updated in ENSDF
Mostly far-off the stability New Nuclides and/or nuclides for which
excited state and/or gamma-ray data became available for the first
time.
A table of half-lives of bare and/or highly-charged ionic nuclei, together with
complete reference list was prepared by Yuri Litvinov (GSI) and B. Singh,
and published as an appendix in 2011 Nuclear Wallet Cards.
Data files for 56 (+4?) new nuclides from 2012Ku26: Phys. Lett. B 717, 371
(Oct 2012) have been prepared. Will be submitted in Feb 2013.
These updates are based on regular scanning of literature for XUNDL
compilations. XUNDL work also leads to corrections in current datasets in
ENSDF. Is a review of this policy/procedure needed?
ENSDF: A-chain evaluations: in progress
A=57: with K. Zuber (Krakow).
(previous: 1999)
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A=76: with A. Farhan (Kuwait U).
(previous: 1994)
A=86: with A. Negret (Bucharest).
(previous: 1999)
A=130: with A. Rodionov, Yu. Khazov (PNPI, Russia)
A=139: with P. Joshi (TIFR, Mumbai), A.K. Jain (IIT,Roorkee),
J.K. Tuli (NNDC,BNL). S. Singh (Ambala, India) (previous: 2001)
A=189, 190: with T. Johnson (NNDC, BNL)
(previous: 2003)
ENSDF database
Corrections for γ-ray branching ratio for
‘single-γ levels’.
• October 2012: Roberto Capote from IAEA-NDS sent a
file retrieved from ENSDF database with 10260 gamma rays with no
relative photon branching ratio listed in Adopted datasets. This
omission produced problems with their calculation of yields in some
reactions.
• November 2012: on my request, received another more relevant
and filtered file from R. Capote which contained 2438 such gammaray records.
• Nov 12 to present: I have gone through 21 nuclides and sent
corrections (i.e. enter 100 where justified) to Jagdish Tuli. Most of
these have been edited in ENSDF. I will continue with the rest.
ENSDF: related codes
• A working version of JAVA-NDS code developed primarily at
McMaster handed over to NNDC in Oct 2011. For several
years it has been used routinely to produce ‘band drawings in
color’ for NDS publication.
• In August 2012, on request this code was sent to Dr. Marco
Verpelli at IAEA. He plans using this code for his LIVECHART
to produce drawings for decay schemes from ENSDF, and
perhaps also from XUNDL datasets.
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M. Birch has developed a general purpose code which has a
library of different averaging procedures, including outliers.
This code also handles asymmetric uncertainties, not handled
by AVETOOLS. He has proposed a new method as well.
Code is now available on NNDC webpage.
ENSDF: training workshops
• Dr. Alexandru Negret from Bucharest visited McMaster in July 2011
for two weeks to work on evaluation of A=75 nuclides.
• IAEA-ICTP Workshop: August 6-17, 2012:
I participated as a lecturer, and coordinated evaluation of A=211
mass chain. This work is at post-review stage, and close to
publication.
• ENSDF workshop Nov 26-29, 2012 at Variable Energy Cyclotron
Center (VECC) in Kolkata, India. I participated as a lecturer and
coordinated A=215 evaluation. About 40 researchers from various
labs and universities in India attended. The work on A=215 is still
continuing. First draft is expected to be completed by the end of this
month.
Collaborations related to ENSDF work
1. NNDC, Brookhaven National Lab.: B. Pritychenko, T. Johnson, J.K. Tuli
2. Physics Department, Kuwait University, Kuwait: A. Farhan
3. Petersburg Nuclear Physics Institute, Gatchina: A.A. Rodionov, Y. Khazov
4. Nuclear Research Institute, Debrecen: J. Timar, Z. Elekes
5. Institute of Nuclear Physics (IFJ-PAN), Krakow: K. Zuber
6. National Institute of Physics and Nuclear Engineering , Bucharest: A. Negret
7. Cyclotron Institute, Texas A&M, USA: N. Nica
8. Tata Institute of Fundamental Research (TIFR), Mumbai, India: P.K. Joshi
9. Indian Institute of Technology (IIT) Roorkee, India: A.K. Jain.
10. Department of Physics, University of Surrey, UK: A.L. Nichols
11. IAEA-NDS: D. Abriola
XUNDL: compilations
April 1, 2011 to Jan 31, 2013
• 796 compiled datasets and 25 updated (for new papers from the
same groups) datasets from about 280 recent (from April 2011
onwards) publications. 42 datasets were compiled with David Kulp,
contactor with NNDC.
• 116 datasets from TUNL; 48 from ANL were reviewed, and edited
when needed.
• Continued correspondence with the original authors to resolve datarelated problems , and obtain additional data.
• Training of a new undergraduate student each year.
• Compilation new mass measurements papers since AME-2003:
Nov 2010 –Oct 2012: 41 primary papers (~ 325 data points);
These data are made available on ORNL webpage: www.nuclearmasses.org
NSR: key-wording of PRC articles
(April 1, 2011 to Jan 31, 2013)
PRC issues: March 2011 to Sept 2012 (19 months):
Keyword abstracts prepared for about 1220 articles from
a total of about 1880 articles.
Undergraduate students prepared first drafts:
J. Choquette, M. Birch and E. Thiagalingam
I provided training for the key-wording process. Draft of keywords
were checked and edited for technical content, wording, and run
through NSR-PREP code to resolve formatting errors, prior to
sending to NNDC
Reference paper for NSR database published:
B. Pritychenko, E. Betak, M.A. Kellett, B. Singh and J. Totans:
Nuclear Instr. & Methods A 640, 213 (2011)
Topical evaluations: B(E2) for first 2+ states
Update of Raman’s 2001 evaluation
B. Pritychenko, M. Birch, J. Choquette, M. Horai, B. Singh
• B. Pritychenko, J. Choquette, M. Horoi, B. Karamy and B. Singh,
An update of B(E2) evaluation for 01+ to 21+ transitions in even-even
nuclei near N~Z~28, ADNDT 98, 798-811 (2012).
• Significant number of new measurements have been published in
the last 2-3 years with the availability of radioactive ion beams.
• B(E2) data for Z=2-22, Z>30 have been compiled and
evaluated, and first drafts of tables are complete. Article
for Z=2-22 region is being prepared for submission to
ADNDT. Hopefully this project can be wrapped up in
about a year.
Topical evaluations: Beta-delayed neutron decays
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In early 2011, initial suggestion for this topic came from Iris Dillmann at GSI,
in context of my communications with C. Sheidenberger.
June 2011: I visited IAEA-NDS and GSI; suggested to D. Abriola to consider
project of reference database for evaluated beta-delayed neutron data for
an IAEA-CRP.
In October 2011, Consultants’ meeting at IAEA for a reference database of
%P(n) values for beta-delayed neutron emitters was organized by D.
Abriola. A Summary report was published by D. Abriola, B. Singh and I.
Dillmann: INDC(NDS)-0599 (Dec 2011)
In May 2012, McMaster hosted a follow-up meeting with 15 participants
from IAEA, GSI, Valencia, BNL, ORNL, RIKEN, LLNL, Guelph (TRIUMF)
with interest in experimental and evaluation work of beta-delayed neutron
emitters. Next meeting is planned at ORNL May 2-3, 2013.
A first draft of evaluation of %P(n) and T1/2 for non-fission region (A<72)
nuclei has been prepared. McMaster + IAEA + NNDC + GSI collaboration.
NNDC has published a systematics paper on the topic:
E.A.McCutchan, A.A.Sonzogni, T.D.Johnson, D.Abriola, M.Birch, B.Singh:
Phys. Rev. C 86, 041305(R) (2012)
Collaborative Research projects
Zr-94 structure experiment at TRIUMF
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Phonon-Coupled Excitations and Mixed-Symmetry States in Zr-94.
Through the study of Y-94 decay to Zr-94 at TRIUMF-ISAC facility: using
radioactive ion beam and 8π gamma-detector array
Steve Yates et al.; one week experiment run in Sept 2011 at TRIUMF .
I participated in the experiment run.
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A. Chakraborty, E.E. Peters, B.P. Crider, C. Andreoiu, P.C. Bender, D.S. Cross, G.A. Demand,
A.B. Garnsworthy, P.E. Garrett, G. Hackman, B. Hadinia, S. Ketelhut, A. Kumar, K.G. Leach,
M.T. McEllistrem, J. Pore, F.M. Prados-Este´vez, E.T. Rand, B. Singh, E.R. Tardiff, Z.-M. Wang,
J. L. Wood, S.W. Yates: Collective Structure in 94Zr and Subshell Effects in Shape Coexistence.
PRL 110, 022504 (2013). (Use of RULER code)
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Previous publication on Y-94 to Zr-94 decay (Data in ENSDF):
B. Singh, H.W. Taylor, and P.J. Tivin, J. Phys. G: Nucl. Phys. 2, 397 (1976) :
54 gamma rays in this work with lowest intensity of 0.010, relative to 100 for most intense γ
In current work, ~450 gamma rays. A. Chakraborty is visiting McMaster in May-June
2013 for 3 weeks to extend the analysis further, and preparation of a full paper.
Steve Yates may visit McMaster also. Use of NNDC codes for analysis.
Experiment on 98Zr structure is also approved at TRIUMF. Run is expected in 2013.
Structure studies of N=Z nuclide 30P
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28Si(3He,
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E. Mcneice, K. Setoodehnia, B. Singh, Y. Abe, D. N. Binh, A. A. Chen, J. Chen, S. Cherubini,
S. Fukuoka, T. Hashimoto, T. Hayakawa, Y. Ishibashi, Y. Ito, D. Kahl, T. Komatsubara, S.
Kubono, T. Moriguchi, D. Nagae, R. Nishikiori, T. Niwa, A. Ozawa, T. Shizuma, H. Suzuki, H.
Yamaguchi, and T. Yuasa.
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We have used ENSDF code GTOL for deducing level energies in a complex
level scheme.
pγ)30P at University of Tsukuba Tandem Accelerator.
By product of experiment on 30S for nuclear astrophysics.
The spectra had a large contribution from 30P.
Dr. Kiana Setoodehnia studied 30S for her thesis.
I encouraged her to analyze data for 30P as well.
This has been done. Results will be presented at ND-2013.
It is McMaster + Tsukuba + CNS, Tokyo + RIKEN + JAEA collaboration:
Other collaborative studies
• Evaluation of half-life of 198Au:
J. Chen, S. D. Geraedts, C. Ouellet, B. Singh : Applied Rad. & Iso. 69, 1064 (2011)
• Decay scheme and half-life of 139Ba:
(in context of A=139 ongoing evaluation): experimental work done at
BARC, India using CIRUS and Dhruva reactors, clover Ge detectors.
This work is now published.
L.S. Danu, P.K. Joshi, D.C. Biswas, S. Mukhopadhyay, A. Goswami, P.N. Prashanth,
L.A. Kinage, R.K. Choudhury, B. Singh:
Eur. Phys. J. A 48, 186 (Dec 2012)
We believe that half-life (discrepant) issue of 139Ba is now settled. Our results are in
excellent agreement with a 2012 publication in PRC by Ken Krane.
• Level structures in 156Pm from 156Nd β− decay: interpretation and theory:
P.C. Sood, M. Sainath, R. Gowrishankar, B. Singh: Eur. Phys. J. A 48, 136 (Oct 2012)
Personnel and Funding
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Alan Chen:
Assoc. Professor, PI of the Project
Jim Waddington: Co-PI of the project.
John Cameron: Emeritus Professor (volunteer for ENSDF eval.1999-2011)
Balraj Singh:
Senior Research Scientist
Jun Chen:
Post-doctoral fellow: until March 2012
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Undergraduate Students (part-time):
Jeremie Choquette: until November 2011
Michael Birch: Since March 2011
Ervin Thiagalingam: Since March 2012
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Main support from Office of Science, DOE, USA