Conference Sessions
th
5 Conference on
Nuclear and Particle Physics
19-23 Nov. 2005
Cairo, Egypt
NUPPAC' 05
Saturday, 19 Nov. 2005
9:30 - 11:00
11:30 - 13:00
13:00 - 14:30
13:00 - 14:30
15:30 - 17:00
15:30 - 17:00
Registration and Opening
Session P
Session HEP1
Session NSS1
Session NSR1
Session RMD1
Sunday, 20 Nov. 2005
9:30 - 11:00
9:30 - 11:00
11:30 - 13:00
13:00 - 14:30
13:00 - 14:30
15:30 - 17:00
15:30 - 17:00
17:00 - 18:30
17:00 - 18:30
Session
Session
Session
Session
Session
Session
Session
Session
Session
NRP1
RQP1
IKN1
NSR2
PFP
AR1
DI1
HEP2
NSS2
Tuesday, 22 Nov. 2005
9:30 - 11:00
9:30 - 11:00
11:30 - 13:00
13:00 - 14:30
13:00 - 14:30
15:30 - 17:00
15:30 - 17:00
Session
Session
Session
Session
Session
Session
Session
NRP2
RQP2
IKN2
AR2
DI2
NSR3
RMD2
Wednesday, 23 Nov. 2005
November 2005
9:30 - 11:00
9:30 - 11:00
11:30 - 13:00
13:00 - 14:30
13:00 - 14:30
15:30 - 17:00
Session
Session
Session
Session
Session
Session
CCS
DI3
IKN3
HEP3
NSS3
CS
Saturday, 19 Nov. 2005
Session P
P-1
MICROSCOPIC OPTICAL POTENTIALS FOR NUCLEUSNUCLEUS ELASTIC AND INELASTIC SCATTERING AT
INTERMEDIATE ENERGIES AND RELATED PROBLEMS
V.K. Lukyanov,
Joint Institute for Nuclear Research, 141980 Dubna, Russia
lukyanov@thsun1.jinr.ru.
In this brief review, it is shown how one can construct the
microscopic optical nucleus-nucleus potentials using the high-energy
approximation theory and basing on the realistic Fermi type nuclear density
distributions. These potentials are applied to calculate the differential elastic
and total reaction cross sections, and the corresponding comparisons with
the experimental data are made. The role of relativization, effects of the
nuclear medium and the trajectory distortion of colliding nuclei on cross
sections are estimated. It is noted that the obtained density dependent NNforces make it possible to get the nuclear incompressibility in the
overlapping volume of colliding nuclei in an acceptable agreement with its
magnitude in neutron stars. The procedure of fitting with experimental data
is suggested to get the co-called semi-microscopic potentials. To this end,
calculations of the corresponding elastic scattering differential cross sections
were made within the high-energy approach as well as by numerically
solving the wave equation with a help of the ECIS code. The microscopic
potentials have no free parameters, and can be used, e.g., for predictions of
the total cross-sections of reactions of the exotic radioactive nuclei with the
stable target-nuclei. The fitted semi-microscopic potentials are required to
obtain the justified entrance and exit channel distorted waves when
calculating inelastic scattering and the nucleons removal reactions. As an
example, the inelastic differential cross-sections are calculated with
excitations of the rotational and vibrational collective states of the targetnuclei. Moreover, the interaction potential, depended on the collective
variables of nuclei, is obtained basing on the microscopic nucleus-nucleus
optical potentials. The respective comparisons with the experimental data
are represented and discussed.
P-2
THE SYNTHESIS AND DECAY PROPERTIES OF SUPERHEAVY
NUCLEI (Z=113-116,118)
Yu. Ts. Oganessian, V. K. Utyonkov, Yu. V. Lobanov, F. Sh. Abdullin,
A. N. Polyakov, I. V. Shirokovsky, Yu. S. Tsyganov, A. N. Mezentsev,
M. G. Itkis
Joint Institute for Nuclear Research,141980,Dubna,Russian Federation.
The present report deals with actual problem of hypothetical super
heavy elements.
Modern theoretical models of nucleus predict high stability against
different types of radioactive decay in the vicinity of new closed shells
N=184 and Z=114. The results of experiments designed to synthesize
elements 113-116 in reactions Pu-242,244. Am-243 and Cm-245,248 plus
Ca-48 are presented. The reactions of production of super heavy nuclei,
their formation cross sections and decay properties are considered. The
large measured alpha-particle energies of newly observed nuclei, together
with the long decay times and spontaneous fission terminating the chains,
offer evidence of the decay of nuclei with high atomic numbers. The decay
of new nuclei are consisted with the consecutive alpha-decay originating
from the parent nuclides with Z=114,115 and 116 produced in the 3n- and
4n-evaporation channels.
The results of an attempt aimed at the synthesis of element 118 in reaction
Cf-249 plus Ca-48 are reported.
The self-consistent interpretations of all observed decay chains
originating at Z=114,115 and 118 is discussed.
The observed nuclear decay properties of nuclides with Z=112-118 are
compared with theoretical nuclear mass calculations and the systematic
trends of spontaneous fission properties.
The experiments were performed employing the Dubna Gas-Filled
Recoil Separator and U-400 cyclotron at Flerov Laboratory of Nuclear
Reactions (Joint Institute for Nuclear Research, Dubna)
P-3
STUDY OF CHARACTERISTICS OF AN EXPERIMENTAL
SUBCRITICAL NUCLEAR FUEL ASSEMBLY DRIVEN BY THE
660 MEV PHASOTRON
Aleksander Polański1,2 and Bronisław Słowiński3,4
1
Soltan Institute for Nuclear Studies, Poland
2
Joint Institute of Nuclear Research, Dubna, Russia
3
Physics Faculty, Warsaw University of Technology, Poland
4
Institute of Atomic Energy, Poland
Polanski@jinr.ru, slowb@if.pw.edu.pl
To make nuclear power quite safe, more efficient and competitive
with respect to other large-scale energy sources within the general accepted
approach of sustainable development the intense investigations in this field
are in progress all over the world. Unfortunately, mainly for material and
technical reasons, we are presently rather far from being able to make
practical usage of our knowledge accumulated in nuclear physics where, in
principle, are seemingly contained the ultimate possibilities existing in
Nature. Therefore, various experimental arrangements are now in operation
providing information on different characteristics concerning the physical
processes, which occur in such complex systems. The most significant and
successful one was the recently performed experiment
TARC in which many fundamental results were obtained [1]. Furthermore,
the idea of the so-called accelerator driven systems based on fueling
spallation neutrons (for example, [2]), first introduced in [3], is now widely
developed in many scientific centers (for example, [4]).
In the work we describe in brief an experimental sub critical
spallation nuclear fuel assembly (SAD) driven by the 660 Mev proton
phasotron planed to be build at Joint Institute for Nuclear Research (Dubna)
[5]. It consists of a spallation interchangeable target (W and Pb), a
subcritical core based on MOX fuel elements (0.297 PuO2+0.703 UO2),
lead reflector and concrete shielding. Spallation neutrons are produced by
the proton beam in a multilayer target (W, Pb). A blanket containing MOX
fuel surrounds the target. The fuel is placed in a stainless steel vessel. A lead
reflector and concrete shielding surround the core. The target and the fuel
elements are cooled by air.
The SAD research program purposes, in particular, the following
goals of investigation: neutron and proton spectra for different spallation
materials and target geometry, heat distribution, transmutation rates of longlived nuclides and energy gain. The schematic view of this device is shown
in the figure. The results of modeling of basic SAD parameters and
especially neutron spectra in different SAD localities [6,7] are discussed in
more detail.
Schematic top view of the SAD experimental sub critical spallation
assembly of MOX fuel core driven by the 660 MeV proton phasotron
(JINR, Dubna).
1. Abanades A. et al. CERN-LHC/98-12(EET), 6 May, 1999; Arnould H, et
al. Phys.Lett B458, 1999, 167-80; Arnould H, et al. CERN-SL-99-036 EET.
Geneva, 1999.
2. Słowiński B. Applied Energy 75 (2003) 129-136.
3. Rubbia C. Et al.CERN/AT/95-44(ET), September 1995,AIP
Con.Proc.346,Las Vegas,1994.
4. Proc. of the Intern. Symp. on Accelerator-driven Transmutation Systems
and Asia ADS Network Initiative. JAERI-Conf 2003-012.
5. Polański A. Monte Carlo Modeling of Electronuclear Processes in
Experimental Accelerator Driven Systems. Acta Phys. Polonica, Vol. B11,
No.1, p. 95,2000.
6. Petrochenkov S., Polański A., Puzynin I. Mathematical Modeling of
Parameters of Subcritical Assembly in Dubna (SAD). Comm.JINR- Р112005-77.
7. Polański A et al. Power Upgrate of the Subcritical Assembly in Dubna
(SAD) to 100 kW, Venice, August 28-September 3, 2005.
Session HEP1
HEP1-1
STUDY OF EVENT-BY-EVENT FLUCTUATIONS IN
RELATIVISTIC HEAVY ION COLLISIONS.
Shafiq Ahmad and M. Ayaz Ahmad
Physics Department, Aligarh Muslim University, Aligarh-202002, India
sahmad2004amu@yahoo.co.in
Recently the study of non-statistical multiplicity fluctuations in
multiparticle production in high-energy nuclear collisions has gained
considerable attention. In order to observe the existence of dynamical
fluctuations, the idea of multifractality has been used. An attempt has been
made to study the event by event fluctuations using the modified method of
multifractal moments, Gq, in the interactions of 28Si and 12C nuclei at 4.5A
GeV/c with nuclear emulsion. In this method N singly charged particles in a
pseudo-rapidity intervals ∆ = max - min are distributed into M bins of
width =/M. A self-similarity in the particle production is characterized
by a power law as:
1 Nev M
 Gq 
(1.)
 ( nj/N)q  (nj-q) ~ ()q
Nev 1 j 1
where nj denotes the number of charged particles in jth bin and q is a
positive integer; (nj-q) is called a step function such that its value is unity if
nj ≥q , otherwise it is zero. N is total number of particles in an event and
Nev stands for the total number of events. q represents mass exponent. The
analysis of Gq moments for our data samples of 443events ( 28Si) and 303
events (12C) clearly shows an evidence of multifractal behavior.
The values of q are found to be higher for the higher order of
the moments. It is also observed that the values of q are nearly independent
of energy and mass. An initial indication of presence of fractality in
multiparticle production supports a self-similar cascade mechanism.
It has been shown that a new entropy index p defined by:
p = dq(p) /dp
at p =1
(2.)
is used as a possible signature of chaotic behavior of multiparticle
production in high energy collisions. Large values of entropy index p
calculated for our data implies that multiparticle production exhibits chaotic
behavior. Finally, the comparison of entropy index for different samples of
our data with those obtained for the FRITIOF events, suggests that this
event generator result may not reproduce the experimental results
adequately.
HEP1-2
RELATIVISTIC EFFECTS IN NUCLEAR MATTER ENERGY BY
LOCV FORMALISM.
S. Zaryouni, H.R. Moshfegh,
Physics Group,Faculty of Sience,Bu-Ali Sina University, Hamedan, Iran
zaryouni@basu.ac.ir
We calculated the relativistic corrections of symmetric nuclear
matter in cluster expansion energy with phenomenological potential AV18.
Relativistic corrections contain relativistic one-body and two-body kinetic
energy corrections and boost interaction corrections. In our calculation we
keep only the terms of boost interaction associated with static part of
potential due to the relativistic energy expansion and Lorentz contraction,
and neglected the terms which are responsible for Thomas precession and
quantum contributions because they are negligibly small. We also calculated
the equation of state of symmetric nuclear matter with non-relativistic
Hamiltonian plus boost interaction correction. The results are in good
agreement with Akmal, Pandeharipande and Ravenhall calculations.
HEP1-3
REMARKABLE EVENTS IN THE KNEE REGION OF THE
ENERGETIC COSMIC RAY SPECTRUM.
M.C. Talai etal,
Algeria
The abstract is not available
HEP1-4
MONTE CARLO SIMULATION OF THE INTERACTION OF
COSMIC RAYS WITH THE GEOMAGNETIC FIELD.
R. Attallah etal,
Algeria
The abstract is not available
HEP1-5
ISOTOPIC ENHANCEMENT IN THE FUSION OF HEAVY-ION
COLLIDING NUCLEI.
Narinder K. Dhiman and Rajeev K. Puri
Physics Department, Panjab University, Chandigarh -160 014, India
Lot of efforts have been made in the past to understand the fusion
phenomena. The recent availability of neutron and proton- rich nuclear
beams has generated
further interest in the field. A large number of
theoretical attempts have been advanced in the past to explain one or the
other features of the fusion dynamics. We shall attempt here to present a
model independent isotopic dependence of fusion dynamics by using a
variety of models, such as Skyrme energy density model, Blocki’s proximity
potential, potential due to Bass, Christensen & Winther, Ngô & Ngô and
Denisov. For the details, reader is referred to refs. [1,2].
The present study of fusion is carried out using magic and semimagic Ca and Ni nuclei. Both symmetric X+X and cross reacting partners
Ca+Ni are considered. Here, we start from the symmetric (N=Z) nuclei and
then gradually add / remove neutrons from the projectile and/or target [2].
We calculated the fusion barrier heights and positions for a large number of
isotopes over N=Z colliding pair as:
R B (%) 
V B (%) 
0
RB  RB
0
RB
V B  V B0
V B0
 100;
(1)
 100,
(2)
Where R and V are, respectively, the positions and heights of the barriers
for N=Z colliding pair. The normalized variation in the fusion barrier
positions and heights are parameterized in terms of a second-order non0
B
0
B
linear form = AS + A S2 , with AS = [N/Z-1]. Slopes of RB(%) and
VB(%) as a function of AS using different models are displayed. These
slopes for RB(%) and VB(%) are very close to each other. The
coefficients  and  for unified formula are within a range of 22.003.00 &
–4.751.75 for RB(%) and –18.751.25 & 6.801.70 for VB(%),
respectively. In spite of a second-order non-linear dependence for RB(%)
and VB(%) a linear variation occurs for the fusion probabilities. All the
fusion variation fus(%) lie within 112.506.50. The above study clearly
indicates that the isotopic effects in fusion dynamics are model independent
and hence experiments are called for to verify our predictions.
1- R.K. Puri et.al, Phys. Rev. C43, 315(1991).
2- N.K. Dhiman and R.K. Puri submitted to Eur. Phys. J. (2005).
HEP1-6
ANTIPROTON - NUCLEI ANNIHILATION CROSS - SECTION
MEASUREMENT WITH THE ASACUSA.
Luca Venturelit
Dipartirnento di chimica e Fisica per l’Ingegneria e per i Materiai, Italy
The ASACUSA Experiment will run at the Antiproton Decelerator
at CERN next Years after the 2005 shutdown.
The main fields of investigation concern test of CPT violation by
spectroscopy of antihydrogen and antiprotonic helium, atomic collision and
nuclear physics experiments.
The nuclear physics program foresees measurements of pbar-nuclei cross
sections at low energies (from few Mev down to the Kev region) using a
detector with 6 layers of scintillating fibers surrounding the target in a
cylindrical geometry.
These measurements will contribute to understand the dynamic of the
annihilation process and in particular to explain why the antiproton nucleus
annihilation rate at very low energy appears independent from the size of the
target, as measured at 1 Mev by the Obelix Collaboration at CERN for H, D
and He.
In addition with the possibility offered by the Musashi decelerator to go
down to less than 1 Kev in antiproton kinetic energy, for the first time it will
be possible to study events where the nuclear processes match with the start
of atomic capture processes.
Session NSS1
NSS1-1
NUCLEON-NUCLEON FINAL-STATE INTERACTION IN THE
HELICITY STRUCTURE OF THE γd  πNN REACTION
Eed M. Darwish
Physics Department, Faculty of Science, South Valley University, Sohag
82524, Egypt
E-mail address: eeddarwish@yahoo.com.
The helicity dependence of the inclusive pion photo production
reaction from the deuteron in the  (1232)-resonance region is investigated
with inclusion of final-state nucleon-nucleon rescattering (NN-FSI). For the
elementary π -production operator an effective Lagrangian model which
includes the standard pseudo vector Born terms and a contribution from the
 -resonance is used. The half-off-shell NN-scattering matrix is obtained
from a separable representation of a realistic NN-interaction. The
differential polarized cross-section difference for parallel and antiparallel
helicity states is predicted and compared with experiment. We find that the
effect of NN-FSI is much less important in the helicity difference than in the
previously studied unpolarized differential cross section. Furthermore, the
contribution of d  γ,π  NN to the deuteron spin asymmetry is explicitly
evaluated with inclusion of NN-FSI. It has been found that the effect of
NNFSI is much larger in the asymmetry than in the total cross section, and
this leads to an appreciable reduction of the spin asymmetry in the  region. Inclusion of such effect also leads to improved and quite satisfactory
agreement with existing experimental data.
NSS1-2
ENERGIES OF COLLECTIVE-SINGLE-PARTICLE STATES OF
DEFORMABLE ODD NUCLEI WITH SMALL NON-AXIALLITY
Sh. Sharipov, M. J. Ermamatov and J. K. Bayimbetova
Institute of Nuclear Physics, Ulughbek, Tashkent 702132, Uzbekistan
Excited states deformable odd nuclei with small non-axiality are
investigated with allowance for the interaction of collective and singleparticle states. Possibility of describing excited states energies of
deformable odd nuclei with small non-axiality within non-adiabatic theory
of odd nuclei, including states up to high spins, is considered. Exponential
type of potential is used for the longitudinal vibrations of the surface of
nucleus.
Following expression is obtained for the collective-single-particle
excited states of deformable odd nuclei with small non-axiality
E n  n Ij |m | 
1

 n    V   0 

3
2

 4 g   2Pj  1  Pj2 
g
2Pj

  P j 12

 e

 
1 1
m2
  P 12
V   0  e j 


2
n

|
m
|

1

  I    ,


2  2 
2 gPj  
12

 
where n is quantum number of -vibrations, n is quantum number of  vibrations, I  spin of the odd nucleus, |m| is a number of rotationally-singleparticle band,  is a number of eigen values concerning to the same I, V(0)
is a parameter having energy dimension, g is dimensionless parameter of the
theory,  is parameter deformability with respect to transverse vibrations,
 I  ( ) are eigen values of a rigid asymmetric rotor,  is a dimensionless
parameter that takes into account the relationship between rotation and
single-particle motion.
Theoretical calculations of the ratios of the excited states energies
to the energy of first excited level are compared with the experimental data
for the nuclei 153Eu, 173Yb, 181Re, 181Re, 183Re and 233U.
NSS1-3
CORRELATION ENERGY BY THE PROJECTION TECHNIQUE
M.R. Oudih(1), M. Fellah(1,2), N.H. Allal(1,2), and N. Benhamouda(1)
(1)
Laboratoire de Physique Théorique, Faculté de Physique
BP32 Al-Alia, 16111 Bab-Ezzouar, Algiers, Algeria X-Assp-Spam-Prob.
(2)
Centre de Recherches Nucléaires d'Alger 2, Bd Frantz Fanon , BP399
Alger-Gare, Algiers, Algeria
Microscopic description of quantum many-body systems like nuclei
is generally based on particle (or quasiparticle) mean-field approach. In the
latter some symmetries are broken and a part of correlation energy is lost.
The breaking of the particle number symmetry in the BCS theory and the
rotational invariance in deformed nuclei are two well known examples.
Recently, correlation energy associated with the former symmetry has been
investigated in the framework of a schematic model [1]. In the present work,
we extend our study by the inclusion of the contribution to the ground state
correlation associated with the rotational symmetry breaking in the case of
nuclei with a quadrupolar deformation. In a first part, we introduce both
kinds of correlations by simultaneous projection mean-field intrinsic states
on the correct number of particles (neutrons and protons) and on spin. The
exact equations being not easy to handle, we use the Gaussian overlap
approximation which seems to be the most attractive method for numerical
calculation. In the second part, an application to the 164Er nucleus is
presented and the correlation effect on the energy surface is discussed.
[1] M.R. Oudih, N. Benhamouda, M. Fellah and N.H. Allal, Heavy Ion
Physics 19,217 (2004).
NSS1-4
PHOTON AND ENERGY YIELDS OF EB GENERATED BY THE
COMPLETE ABSORPTION OF BETA PARTICLES FROM 90SR-90Y
USING MAGNETIC DEFLECTION TECHNIQUE
Ali A. Lateef
Department of Applied Science,University of Technolory, Baghdad, Iraq
The external bremsstrahlung (EB) generated by the complete
absorption of 90Sr-90Y beta particles in different materials of perspex, teflon,
SiO2 glass, aluminum, copper, brass, silver, idium, tin, tungesten, gold and
lead were measured using multichannel NaI(Tl) scientillation spectrometer
along with a standard geometrical arrangement in the energy region 0.26-
2.00 Mev. The Magnetic deflection method was followed. The energy and
poton yiels and their constants was extensively investigated. The use of
magnetic deflection technique demonstrates that the production of EB
photons by low-Z materials is significant. Neglecting this contribution in the
traditional beta-stopper method my cause a considerable error in results.
NSS1-5
FROM THE SPECTRUM TO THE POTENTIAL.
F.Z. Ighezou(1), R.J. Lombard(2)
(1) Université des Sciences et de la Technologie Houari Boumediene, BP
32 El Alia, 16111 Bab Ezzouar, Alger, Algérie.
(2) Groupe de Physique Théorique, Institut de Physique Nucléaire, 91406
Orsay Cedex, France
Following a method initiated by Bertlmann and Martin [1], a series
of recurrent inequalities connecting the even moments of the ground state
density, to the energy of the yrast levels was developed in the frame work of
the two-body non relativistic quantum mechanics [2]. These expressions can
be converted into equalities by introducing a correction factor, not universal,
but quite satisfactory in many cases; for instance an accuracy better than 1%
is reached for confining and power-law potentials [3,4].
The method allows us to determine the moments of the ground state density,
from the spectrum; consequently it enables us to reconstruct the ground state
density and thus the ground state wave function from discrete spectrum. The
density is reconstructed from its moments via its Fourier transform F(q)
which admits a formal series expansion in term of the even moments. It can
be approximated by using the technique of Padé approximants which
provide us with a way of determining the uncertainties on the ground state
density. The next step consists in reconstructing potential by inverting the
Schrödinger equation.
The accuracy of the results depends on the number of available
levels; a concrete example has been given in the spectral analysis of the
(208Pb) muonic atom data [5], the case of He atom is also treated.
[1] R.A. Bertlmann, A. Martin, Nucl. Phys. B 168, 111 (1980); 182, 35
(1981).
[2] R J. Lombard, J. Mares, Phys. Rev. C 52, 170 (1995).
[3] F. Z. Ighezou, R. J. Lombard, Ann. Phys. (NY) 278 (1999) 265.
[4] R. Mezhoud, F. Z. Ighezou, A. Chouchaoui, A. T. Kerris and R. J.
Lombard, Ann. Phys. (NY) 308 (2003) 143.
[5] F. Z. Ighezou, R. J. Lombard and J. Mares, Eur. Phys. J. A 11 (2001) 79.
NSS1-6
ON THE INCLUSION OF 3-BODY FORCES INTO THE FOURBODY BOUND STATE IN 3-D APPROACH
M. R. Hadizadeh and S. Bayegan
Dept. of Phys., Univ. of Tehran, Tehran,Iran.
In recent years Glockle and collaborators have introduced the
Three-Dimensional approach which greatly simplifies the numerical
calculations of Few-Body systems without performing the Partial Wave
components. We have extended the approach for four-body bound state
[1,2] with two- body forces, and we have solved the obtained Yakubovsky
equations directly as three dimensional integral equations without
employing partial wave decomposition [3]. We want to introduce an
approach to include a 3BF into the 4-Body Yakubovsky equations with 3-D
scheme. The four-body binding energy and the full wave function with
Malfliet-Tjon type two-body potentials and scalar Fujita-Miyazawa type
three-body forces [4] have been calculated. The preliminary comparison of
our numerical calculations with the Partial Wave results with and without
3NF is promising.
[1] H. Kamada and W. Glockle, Nucl. Phys. A 548 (1992) 205
[2] H. Kamada and W. Glockle, Nucl. Phys. A 560 (1993) 541
[3] M. R. Hadizadeh, S. Bayegan, in preparation.
[4] H.Liu, Ch. Elster, W. Glockle, Few-Body Systems 33 (2003) 241
NSS1-7
DESCRIPTION OF THE INTERACTION BOSON-FERMION
MODEL FOR 9B AND 9BE NUCLEUS
H.M. Khalil, H.A Abdel Ghany and H. Yassin
Phys. Dept., College for Women, Ain Shams University, Cairo, Egypt.
In this work the energy levels of 4Be9 and 5B9 nuclei were
described by Interacting Boson-Fermion Model (IBFM). The 4Be9 and 5B9
were treated as a two body problem 1H3 (F), 3Li6 (B) and 2He3 (F), 3Li6 (B),
respectively. The obtained theoretical calculations were compared with the
experimental results.
Session NSR1
NSR1-1
THE NEUTRON CAPTURE CROSS SECTIONS FOR 99Tc WITH
FESHBACH AND WEISSKOPF MODEL
N. Amrani* and A. Boucenna
DAC Laboratory, Physics department, Faculty of sciences, UFAS
University, Algeria
*E-mail: naima2073@yahoo.fr
The transmutation is one of the famous modes for the nuclear
wastes management. It is based on the transformation of the radiotoxic
element to the stable one by nuclear reaction. The most important fission
products are technetium-99. The 99Tc where confirmed to have highest
transmutation priorities in terms of transmutability and long-term
radiological risk reduction. Its transmutation under a neutron flux in an
installation (transmuter) is the process of its artificial transformation into
stable nuclides. The neutronic cross sections of the 99Tc (n,) 100Tc reactions
are calculated with the Feshbach and Weisskopf model outside the
resonance region. These values are compared to those evaluated from the
nuclear data library ENDF/B-IV. The introduction of the normalization
factor is necessary to have closers values.
NSR1-2
ENHANCEMENT OF ENERGY LOSS OF 25 MEV PROTONS IN
FERROELECTRIC BATIO3 SINGLE CRYSTALS.
U.K. Khadke etal,
India
The abstract is not available
NSR1-3
RESCATTERING EFFECTS IN POLARIZATION OBSERVABLES
FOR PION PHOTOPRODUCTION FROM THE DEUTERON
E. M. Darwisha,1, A. Y. Ellithib, M. K. Hegabb and K. Fousia
a
Physics Dept, Faculty of Science, South Valley University, Sohag, Egypt
b
Physics Dept., Faculty of Science, Cairo University, Giza, Egypt
1
eeddarwish@yahoo.com.
The influence of final-state interaction (FSI) effects on polarization
observables of the differential cross section in the inclusive pion photo
production reaction from the deuteron,
d  γ,π  NN, involving polarization
of the photon beam and/or the deuteron target, has been investigated over
the whole Δ (1232)-resonance region adopting a nonrelativistic model
based on time-ordered perturbation theory. The elementary reaction
mechanism on the free nucleon is described within an effective Lagrangian
model with inclusion of Born terms and Δ (1232)-resonance contribution.
The half-off-shell scattering matrices are obtained from separable
representation of realistic interactions. Various single- and doublepolarization asymmetries of the differential cross section are studied with
respect to the influence of such interaction effects and numerical predictions
are given for forthcoming experiments. Final-state rescattering is found to
be quite important for the linear photon asymmetry Σ , the tensor target
asymmetries T20, T21 and T22 and the longitudinal double-spin asymmetry
T 20 , whereas it is much less important for the vector target asymmetry T11
and the other beam-target double-polarization asymmetries.
NSR1-4
MODIFED TWO-BODY POTENTIAL MODEL TO THE 3He(,)7Be
AND 7Be(p,)8B REACTIONS AT EXTREMELY LOW ENERGIES.
S.B. Igamov, A. Santullaev , and R.Yarmukhamedov
Inst. Of Nucl. Phys., Uzbekistan Academy of Sciences , Tashkent,
Uzbekistan
A reliable estimation of rates of different nuclear astrophysical
reactions A(a, )B responsible for light element abundance is one of the
most actual problem of the modern nuclear astrophysics [1]. Solution of this
problem is impossible without obtaining the rather low energy cross
sections (or equivalently its astrophysical S-factors (AS) SAa(E)) for such
reactions as 3He(,)7Be , 7Be(p, )8B etc [1].
In the present work modified two-body potential approach allowing to
determine both the asymptotic normalization constant (ANC) of the overlap
integral for the bound wave function of the nucleus B in the (A+a) -channel,
CAa; l.j,( or the respective nuclear vertex constant for the virtual decay B 
A+a ), where l ( j ) is the orbital (total) angular momentum of the particle a
in the nucleus B =(A+a) , and the AS SAa(E) at the stellar energies (E  25
Kev) from an analysis of the Sexp(E) for the peripheral direct caputure
reaction A(a, )B is developed. This method involves two additional conditions that verify the peripheral character of the reaction under consideration
and on it S(E) is expressed in the terms of ANC
2
C Aa
;lj but not in the
terms of the usual spectroscopic factor ZAa;lj , which is related to the ANC
CAa; l.j as
2
2
Z Aa;lj  CAa
;lj / blj , where blj is the single-particle ANC for the
wave function of the bound B(=A+a) state calculated within the shell model
using the phenomenological Woods-Saxon potential with the geometric
parameters ( a radius ro and a diffuseness a). The value of blj strongly
changes as a function (ro,, a)-pair and is determined by a variation of
values of the parameters ro, and a in a wide physical acceptable range.
The present method allows one to remove the model dependence of the
calculated direct on S(E) on the the geometric parameters ro, and a both
for the two-body bound (A+a) state and the Aa-scattering state in
minimum.
The developed method has been applied to the analysis of the
experimental Sexp(E) of the direct capture 3He(,)7Be [2] and 7Be(p, )8B
[3-5] reactions at extremely low energies. By verifying values of the
parameters ro, and a in the wide range it is demonstrated that these
reactions are strongly peri-pheral and they in tern allowed one to determine
values of the ANC’s for the virtual decays 7Be(g.s.) 3He+ (1) ,
7
Be(0.429 MeV) 3He+ (2) and 8B 7Be+p
(3). They are
C 32He ;13/ 2  25.6  2.4fm 1 and C 3*2He ;11/ 2  16.2 1.74 fm-1 for the virtual
decays (1) and (2), respectively,
and C 72Bep ;11/ 2  C 72Bep ;13/ 2 =4.740.39 ;
4.760.39 and 5.730.05 fm-1 for the virtual decay (3) by the analysis of
the Sexp(E) from Refs. [3] , [4] and [5], respectively. It is also shown that
they have fairly weak dependence on the values (ro,, a)-pair. The obtained
values of the ANC’s are used to extrapolate values of S(E) at stellar
energies, including E=0. In particular, the values of S34(0)= 0.560.05
Kevb , which corresponds to the experimental data of Ref. [2], and of
S71(0)=18.72.1 , 17.41.4 and 21.2 1.4 evb , which correspond to the
experimental data from Refs [3],[4] and [5], are obtained. The uncertainties
obtained for the corresponding values of the ANC’s and of the S(0) involve
the experimental uncertainties for the corresponding Sexp(E) and the
theoretical uncertainties connected with the model dependence of the
calculated S(E) on the the geometric parameters ro, and a of the
phenomenological two-body ( 3He+ and 7Be+p ) Woods - Saxon
potentials..
1.E.G. Adelberger et al. Rev. Mod. Phys. 70 (1998) 1265.
2.J.L. Osborne et al. Nucl.Phys. A419 (1984) 115.
3.B.W.Filippone et al. Phys.Rev. C28 (1983) 2222.
4.F.Hammache et al. Phys. Rev.Lett. 88 (1998) 928.
5. A.R. Junghans et al. Phys.Rev. Lett. 88(2002) 041101.
NSR1-5
FADDEEV EQUATIONS AND THE TIME INDEPENDANT MEAN
FIELD THEORY
F. Kadem , F. Mekideche
Laboratoire de physique théorique, Faculté de physique, USTHB
BP32, 16111 El-Alia, Bab-Ezzouar, Alger, Algérie
To obtain the solutions of the quantum mechanical equations, the
formalism of the Schrödinger equation is insufficient for a few body system.
In fact, it’s, for example, impossible to describe with just one equation the
physics of the problem.
In the collision theory, the Lippmann-Schwinger equation is
fundamental. But, it’s still difficult to have the exact solution when we
study a system of N particles with N≥ 2.
In this note, we first study, by the simplest form of Faddeev
equations, the elastic scattering of a particle 1 on a bound state of two
particles 2 and 3. We want to calculate the three-body Faddeev amplitude
from a variation principle.
We find a functional whose stationary conditions are Faddeev
equations. A mean-field approximation can be introduced in this variation
principal, in order to generate simplified, approximate solutions of Faddeev
equations and fast estimates of the three-body and more collisions
amplitudes.
Keywords: “variation principle”, “Faddeev equation”, “collision”,
“amplitude”, “functional”.
NSR1-6
NEW BROAD 8Be NUCLEAR RESONANCES
Philip R. Page
Los Alamos National Laboratory, USA
Energies, total and partial widths, and reduced width amplitudes of
8
Be resonances up to an excitation energy of 26 Mev are extracted from a
coupled channel R-matrix analysis of experimental data. This is the
most comprehensive analysis that has ever been preformed for 8Be.
The presence of an extremely broad J pi=2+ ``intruder'' resonance
is confirmed, while a new very broad 4+ resonance is discovered. A
previously known 22 Mev 2+ resonance is resolved into two resonances.
The experimental J pi T=3(+) resonance at 22 Mev is determined to be
3-0, and the experimental 4 resonance to be isospin 0.
NSR1-7
NUMBER-CONSERVING QRPA APPROACH
M.R. Oudih
Laboratoire de Physique Théorique, Faculté de Physique
BP32 Al-Alia, 16111 Bab-Ezzouar, Algiers, Algeria
The Quasiparticle Random Phase Approximation (QRPA) is one of
the most used methods for the study of the nuclear structure. On one hand, it
provides a simple approach of excited states, and on the other hand, it
includes a part of correlations in the ground state that are neglected in the
quasiparticle mean-field.
However, the QRPA is based on the quasiboson approximation
treating the quasiparticle pairs as bosons. This approximation leads to a
violation of the Pauli principle and breaks the particle number symmetry. As
a consequence, it presents a spurious excitation mode [1].
The aim of this contribution is to introduce an approach that allows
one to avoid the defaults and the drawbacks of the QRPA. This is achieved
by using a number-projected BCS wave-function as the ground state. The
projection technique is based on a recently derived expression of the
projection operator [2]. The present approach includes ground-state
correlations beyond the QRPA and allows one to consider the coupling
between one-phonon and more complex states.
[1] P. Donati, T. Dossing, Y.R. Shimizu, P.F. Bortignon, R.A. Broglia,
Nucl.Phys.A653,27(1999).
[2] M.R. Oudih, M. Fellah and N.H. Allal, Int. J. Mod. Phys. E 12, 109
(2003).
Session RMD1
RMD1-1
DETERMINATION OF CADMIUM CONCENTRATION IN
DIFFERENT IRANIAN
PLASTIC PRODUCTS USE OF
INSTRUMENTAL NEUTRON ACTIVATION ANALYSIS.
F. Asgharizadeh, P. Alizadeh, A. Abbasi, M.R. Assadi, E. Sedgh Gouya,
P. Pejmanzad and O. Hochaghani.
Atomic Energy Organization of Iran
Cadmium is generally considered as a hazardous element for
human and the environment. Cadmium is used in the manufacture of some
articles made of plastic and polyvinyl chloride (PVC) as pigments and
stabilizing agents, and their disposal and incineration adds to accumulation
of this toxic metal in the environment.
In this study the Cd concentration in different Iranian plastic
products used as foodstuff containers, plastic ware, bags and so on have
been evaluated.
Instrumental Neutron Activation Analysis (INAA) as a nuclear
analytical technique has very good and attractive characteristics for the
determination of Cd in plastics.
Analysis protocols, limits of detection, sensitivities, the observed
levels of Cd in under test samples are being discussed.
RMD1-2
ELEMENTAL
ANALYSIS
OF
WATER
AND
SOIL
ENVIRONMENTAL SAMPLES IN TABUK AREA BY NEUTRON
CAPTURE GAMMA-RAY SPECTROSCOPY TECHNIQUE
Sh. M. Al-Aseery1, Z. Alamoudi2 and A. M. Hassan3*
1
Girls college of Education in Tabuk, K.S.A.
2
Girls college of Education in Geddah, K.S.A.
3
Reactors Physics Department, R.D, N.R.C, A.F.A. Cairo, Egypt.
* abdelmonem_hassan@yahoo.com
The prompt and delayed gamma-rays due to neutron capture in the
nuclei of the constituent elements of three soil samples and one drinking
water sample have been measured. The 252Cf and 226Ra/Be isotopic neutron
sources are used for neutron irradiation. Also, the hyper pure germanium
detection system is used. The soil sample were from Astra, Tadco and ElGammaz farms, while the water sample was taken from Tabuk City. In case
of prompt gamma-ray analysis, a total of 16 elements were identified, and
the concentration percentage values by weight were calculated for: C, Na,
Mg, Al, Si, S, Cl, K, Ca, Ti, Mn, Fe, Co, Zn, Sr and Pb elements. The
elemental investigation of the same samples by means of the delayed
gamma-ray technique, six elements were identified and their concentration
percentage values have been calculated for Na, Al, Fe, Ti, Mn and Zn. A
comparitive study between the results obtained in this work and the results
obtained by ICP-MS and EDX-Ray techniques for the same samples is
given.
RMD1-3
MEASUREMENTS OF NATURAL RADIOACTIVITY IN SOME
KINDS OF MARBLE AND GRANITE USED IN RIYADH REGION.
Ferdoas Saud AL-Saleh and Badriah AL-Berzan
Phys. Dept., Girls College of Education in Riyadh. Saudi Arabia.
ferdoasalsaleh @hotrnafl. corn.
Thirty seven samples of marble and twenty samples of granite from
both local and foreign locations were collected from different factories in
Riyadh Region. The samples were crushed, dried in controlled furnace for
around twenty four hours, and then stored for four weeks in ½l plastic
Marinelli beakers. The gamma radiation of the samples was measured,
employing high resolution γ - ray spectroscopy with an accumulating time
for about 80000 sec. each. From the measured γ -ray spectra, activity
concentrations were determined for marble samples for 238U(0.7144.lBq.kg-1), 232Th(0.10-32.0 Bq.kg-1), 226Ra(0.36-32.4 13q.kg-1) ,40K (0.68897.1 Bq.kg-1) and 137Cs( LI~D- 0.31 Bq.kg-1) while for granite 238U(0.03314.4 Bq.kg-1), 232Th(0.02-186.4 Bq.kg-1), 226Ra (0.03-147.0 Bq.kg-1) ,40K
(0.28-1531.7 Bq.kg-1) and 137Cs( LL1)- 3.6 Bq.kg-1) . The radium equivalent
activity, radiation hazard indices and absorbed dose rate for all samples
were estimated.
RMD1-4
INTER-COMPARISON STUDY OF THE POPULATION DOSE DUE
TO GAMMA-RADIATION IN THE COAST OF NORTH SINAI
BETWEEN RAFAH AND BIR AL-ABD AREAS.
M. K. Seddeek1, T. Sharshar2, H. M. Badran3,4
1
Dept. of Phys., Faculty of Education, Suez Canal Univ., Al-Arish, Egypt
2
Dept. of Phys. and Chemistry, Faculty of Education, Tanta Univ., Kafr ElShaikh, Egypt
3
Dept. of Phys., Faculty of Science, Tanta Univ., Tanta 31527, Egypt
4
Whipple Observatory, Harvard-Smithsonian Center for Astrophysics,
Amado, AZ 85645, USA
This study inter-compare the external dose due to the -ray emitting
radionuclides in various areas in north Sinai, Egypt. The whole area was
divided into 10 local regions. The average absorbed dose rates were
evaluated for each region. It was found that Zaranik protected area and AlMassaid have the highest values of 72.7 and 57.2 nGy h-1, respectively. The
corresponding values of the remaining regions were below 23 nGy h-1. The
mean annual effective dose equivalent for the four biggest cities Rafah, ElSheikh Zuwaied, Al-Arish and Bir Al-Abd were 21.4, 19.3, 59.1 and 14.4
Sv with one individual at risk due to the radiation exposure of naturally
occurring radionuclides in 50, 71, 8 and 83 years for these cities,
respectively. The results are compared with those from different parts in
Egypt and from various countries.
Keywords: Naturally occuring radionuclides, Dose rate, Radiation hazard
indices, Coastal environment, Black sand, Sinai, Egypt
RMD1-5
DOSE SURVEY OF PEDIATRIC AND ADULT PATIENTS IN
SUDAN
K. E. M. Mohamadain1, A. C. P. Azevedo2, M. Dahab1, Kh. Hassan1
1
Physics Department, Faculty of Science, Sudan University of Science and
Technology, Khartoum, Sudan, kouther@hotmail.com
2
FIOCRUZ-ENSP/CESTEH, Rua Leopoldo Bulhoes, 1480, Manguinhos,
21041-210, Rio de Janeiro, Brazil. acpa@ensp.fiocruz.br
A survey of radiation doses to children and adults from diagnostic
radiography has been carried out in seven hospitals in Sudan. In four
hospitals only pediatric examinations were studied. In two hospitals only
adult patients were recorded and in one hospital both kinds of patients
(pediatric and adults) were evaluated. For pediatric patients only chest x-ray
examination was evaluated and children were divided according to age
ranges: from (0-1) and (1-5) years for chest AP only and from (5-10) and
(10-15) for chest PA. For adult patients the examinations were chest AP and
PA, abdomen AP and skull AP and PA. Entrance Surface Dose (ESD) and
the Effective Dose (E) were calculated using the DoseCal software. The
mean ESD for children, measured in µGy, ranged from (45-53) and (53-56)
for (0-1) and (1-5) years, respectively and from (55-71) and (68-85) for (510) and (10-15) years, respectively. In two of the pediatric hospitals the
mean ESD values were greater than the CEC Reference Dose Levels. In
Elbulk and Sinar hospitals the values ranged from 167-261 and 186-308
‫ى‬Gy for the age ranges (0-1) and (1-5) respectively and 167-194 and 279312 µGy for the age ranges of (5-10) and (10-15) respectively. For adult
patients the ESD and E dose values evaluated in Alfisal hospital presented
values comparable with the CEC Reference Dose Level. However for
Alshorta hospital the values were higher for the chest AP and PA with
results for ESD 0.446 and 0.551 mGy respectively.
Sunday, 20 Nov. 2005
Session NRP1
NRP1-1
NEUTRON FLUX DISTRIBUTIONS IN A 252CF IRRADIATION
CELL FOR NAA
E. A. Eissa*, A. El-Khayat, N. F. Soliman, L. Ashmawy and
A.H.El-Farrash**
Reactor Physics Dept., Nuclear Research Center, AEA, Cairo, Egypt
*E-mail:essameissa@yahoo.com
**Phys. Dept., Faculty of Sc., Manssoura University, Manssoura, Egypt.
A 100 microgram 252Cf - neutron source was embedded in a pure
paraffin moderator surrounded by neutron and gamma ray shields to be used
as an irradiation cell facility for NAA experiments. The cell is provided with
a direct horizontal channel and a vertical tangential irradiation channel
(VTIC) parallel to the source axis. The cadmium difference method was
used in determining the thermal and epithermal neutron flux distributions
along the axis of the (VTIC). For this purpose, 10 pairs of bare and
cadmium covered pure gold foils were irradiated at the same positions along
the axis of the (VTIC) in two separate runs. The obtained distributions of
thermal and epithermal neutron fluxes were tabulated and graphically
presented. An evidence for contributions from 252Cf fission by epithermal
neutrons was noticed. As an application on this facility the concentration of
gold in an ore sample from gold – bearing ivory vein of wady Allaqui (at
south west of eastern desert) was determined. It was found to be
35.32±8ppm. The absolute efficiency of the HPGe detector at the gamma
ray energy 411.8 Kev of 198 Au, was found to be 0.0318 ± 0.0025.
NRP1-2
TIME-DEPENDENT NEUTRON TRANSPORT IN FINITE PLANEPARALLEL BINARY STOCHASTIC MEDIA
S. A. El-Wakil, A. R. Degheidy, and M. Sallah
Phys.Dept., Faculty of Science, Mansoura University, Mansoura, Egypt
The monoenergetic time-dependent neutron transport equation in a
finite plane-parallel random (stochastic) medium of binary Markovian
mixture with Rayleigh scattering is studied. The medium is considered to
has specular-reflecting boundaries with angular-dependent externallyincident flux. The problem is transformed into a stationary-like problem and
then Pomraning-Eddington approximation is used to find the solution. The
formalism developed by Levermore et al. and Pomraning was introduced to
obtain the ensemble average solution. The obtained average solution is used
to give explicit analytical forms for the ensemble-average of reflectivity ,
and transmissivity. Numerical results are obtained for reflectivity and
transmissivity of finite slabs of different thickness. Two weight functions are
introduced to force the assumed boundary conditions to fulfill and for the
aim of comparison.
NRP1-3
EXPERIMENTAL STUDY OF THE RELEASE AND DISPERSION
OF AR-41 FROM A 300 KW REACTOR.
Dj. Maouche,
Algeria
The abstract is not available
NRP1-4
MEASUREMENT OF INELASTIC SCATTERING CROSSSECTIONS FOR REACTOR FAST NEUTRONS FROM YB-174
USING TIME OF FLIGHT TECHNIQUE.
A. J. M. Al Azzawe
Nuclear Investigation Center, Argentina
One of the horizontal channel of the RRA reactor of 5 MW has
been used to measure the inelastic scattering cross section of fast neutrons
(neutron energy between 0.4 to 3.5 Mev) scattered from the rare earth
isotope Yb – 174 by using the time of flight technique TOF ( the time of
flight of neutron from the target to the neutron counter ) .
The excited levels of Yb – 174 studied were: ( 889.70(8+),
1318.30(2-), 1606.30(3+) and 1884.60(5-) ) as the results of the integral
cross – section of inelastically scattered neutron from these individual
levels.
By using the asymmetry (the different number of neutrons detected
in two angles 0 and 180) in the neutron detection at forward and backward
neutron counters to deduce the direct interaction to the compound nucleus
formation during the inelastic scattering reaction.
Eight large (NE-213) neutron counters (4 at 0 angle and 4 at 180
angle) were used with dimension of 100 cm in length and 8.5 cm in diameter
viewed by two photomultiplier tubes to detect the scattered neutrons from
the target and two Ge (Li) detectors on the perpendicular direction of
neutron counters to measure the gamma – rays from the decayed levels of
the nucleus.
From the coincidence between any of eight neutron counters and
any of the two gamma – rays detectors, the start signal in the TOF spectra
was measured; trigger at the time of gamma – rays and stop from the
neutron counter.
The time resolution of 8.8 ns has been obtained between the eight
neutron counters and one of the gamma – rays detectors.
Data acquisition and system control were recorded event by event
by HP – computer via CAMAC system and IBM computer for off – line
analysis.
The charge comparison method (CCM) was used for the
discrimination between neutron and gamma – rays, and the optimization of
the parameters were done by using the Cf – 252 neutron source.
The experimental results were corrected for the attenuation and
multiple – scattering in the sample, when the final results compared with the
(HFM) theory.
NRP1-5
SMALL-ANGLE NEUTRON SCATTEING STUDY ON STAR DIBLOCK COPOLYMERS.
Oguz Ertugrul
Dept. of Phys., Faculty of Sciences, Anadolu University, Eskişehir, Turkey
Determining structural properties, phase transitions and stability of
polymer mixtures is very important to produce new materials with desired
and interesting properties. Small Angle Neutron Scattering Technique
(SANS) has been one of the most powerful and intensely used methods for
the characterization of polymers for last decades. In this study, we use a
model based on Gaussian Random Phase Approximation (RPA) to describe
Star Di-block Copolymers (SDC) mixtures with homo-polymers. We could
able to predict the miscibility and phase transitions of the various mixtures
along with their structure factors, producing a thermodynamic picture of the
system. Also the results suggest that scattering intensity will be dictated by
the structure factor of the core or shell parts of star polymer only, which
depends on the homo-polymer type of the mixture.
Keywords: Neutron Scattering, RPA, Star Polymers
NRP1-6
THERMAL INVESTIGATION OF ETRR-2 RESEARCH REACTOR
WITH DIFFERENT INDUCED DRAFT WET COOLING TOWER.
Adel. L. Ismail,and Hesham H. El Khatib
Reactors Dept., NRC, AEA, Cairo, Egypt
The thermal performance of nuclear reactor is directly affected by
its cooling system, a cooling toaer play an important role in this cooling
system to evacuate the heat generated in the nuclear reactor core, in this
work a simple mathematical model is using to compare a two cooling
towers, the first cooling tower which operated in the reactor till 2003 and
the second one (current) which replaced the first in 2003, to predict a core
inlet temperature and a cooling tower outlet temperature, also the effect of
ambient condition on the performance is measured, an Engineering Equation
Solver program (EES) is used to simulate the integrated cooling system and
the model is validated by a readings from control room monitors in reactor,
the results yield a better performance of the current cooling tower than the
old.
Key words: Cooling tower, cooling capacity, engineering equation solver
(EES), model, performance evaluation.
Session RQP1
RQP1-1
RESTORATION OF SUPERSYMMETRY AGAINST ARBITRARY
SMALL QUANTUM CORRECTIONS USING FEEDFORWARD
NEURAL NETWORK.
Ashish Chaturvedi and Manu Pratap Singh
Department of Computer Science, Institute of Information and Computer
Science, Khandari, Dr. B. R. Ambedkar University, Agra-282002, UP,
India.
dr_ashysh@yahoo.com and manu_p_singh@hotmail.com
In this paper, the study of restoration of Supersymmetry, broken at
tree level, has been undertaken. In the present model we have lucratively
applied the method of back propagation based on gradient descent along the
error surface to restore the supersymmetry against arbitrary tiny quantum
corrections in the form of small thermal agitations. Back propagation
method brings the potential stability against supersymmetry breaking due to
small thermal agitations by updating the connection strengths in different
layers of feedforward neural network.
RQP1-2
PATHS OF PHOTONS NEAR BLACK HOLE
M. Ayub Faridi, and Fazal-e-Aleem
Centre for High Energy Physics University of the Punjab, Lahore, Pakistan
The abstract is not available
RQP1-3
FROM FUNDAMENTAL THEORY (QCD) TO NUCLEAR PHYSICS
H. Sadeghi and S. Bayegan
Dept. of Phys., Univ. of Tehran, Tehran, and Dept. of Phys., Univ. of Arak,
Arak, Iran.
The fundamental theory of the strong interaction is quantum
chromodynamics (QCD), which is a relativistic field theory with local gauge
invariance, whose elementary constituents are colored quarks and gluons. In
principle, QCD should provide a complete description of nuclear structure
and dynamics. Unfortunately, QCD predictions at nuclear length scales with
the precision of existing (and anticipated) experimental data are not
available, and this state of affairs will probably persist for some time. Even
if it becomes possible to use QCD to describe nuclei directly, this
description is likely to be cumbersome and inefficient, since quarks cluster
into hadrons at low energies.
Nuclei are fascinating objects. In a nucleus the protons and
neutrons, collectively known as nucleons, are bound together by the strong
nuclear force. At a fundamental level these interactions are described by
Quantum Chromodynamics (QCD), a theory of quarks and gluons carrying
color charges that are asymptotically-free at short-distances. However, the
quarks and gluons in a nucleus are very far from being asymptotically-free.
Instead they comprise individual, colorless, nucleons, which largely retain
their identity in the many-body system. The color-singlet nucleons are then
bound to each other by what can be thought of as ``residual" QCD strong
interactions. This sketch of nuclear dynamics from the QCD point of view--brief as it is---makes it clear that from this standpoint the nucleus is an
incredibly complicated, non-perturbative, quantum-field-theoretic, infinitebody problem.
How can we simplify this problem to make progress? We will
employ a framework based on Lorentz-covariant, effective quantum field
theory and density functional theory. Effective field theory (EFT) embodies
basic principles that are common to many areas of physics, such as the
natural separation of length scales in the description of physical phenomena.
In EFT, the long-range dynamics is included explicitly, while the shortrange dynamics is parameterized generically; all of the dynamics is
constrained by the symmetries of the interaction. When based on a local,
Lorentz-invariant Lagrangian (density), EFT is the most general way to
parameterize observable consistent with the principles of quantum
mechanics, special relativity, unitarity, gauge invariance, cluster
decomposition, microscopic causality, and the required internal symmetries.
The use of EFT techniques is an ever growing approach in various
fields of theoretical physics. Along with the continuing application of Chiral
Perturbation Theory and Nuclear Effective Field Theory, more recently,
Chiral symmetry in lattice QCD (Chiral fermions, Chiral extrapolations,
finite volume effects) and atomic few-body systems have been the focus of
many investigations.
EFT has come far in describing the strong interactions at low
energies in a systematic and model-independent way. The disparity between
the energy scales of typical QCD phenomena and the scale for nuclear
systems an ideal playing ground for EFT methods. the first motivation
behind EFT programme in nuclear physics is to obtain a description of
nuclear phenomena firmly based on QCD. The second one is to derive
nuclear properties from the QCD Lagrangean.
The last decade saw significant progress in the theoretical
development and experimental tests of EFT. Mapping QCD for example at
energies relevant for nuclear reactions onto an EFT of hadronic degrees of
freedom, one starts from a lagrangian which includes only those degrees of
freedoms which are observable at low energies considered: pions as the
Goldstone bosons of the spontaneously broken Chiral symmetry of QCD,
nucleons and their heavier mesonic or baryonic relatives. Symmetry
principles determine the couplings between the mesons, of mesons to
baryons and amongst the baryons. Identifying small expansion parameters
allows results of pre-determined accuracy by estimating all contributions
classified as higher order and hence not considered. Calculations can thus be
improved systematically and are model-independent, containing also a
minimal set of free parameters. They can also be decomposed uniquely
into contributions of different physical processes. Ambiguities in choosing
the forms of couplings and regularization method of the loop integrals do
not influence physical results. The theory allows thus for modelindependent, parameter-free, perturbative computations of nuclear and
nucleus properties at low energies with answers of finite, known accuracy
without off-shell ambiguities. Higher order effects, relativistic and other
corrections are systematically accounted for.
While the symmetries of the low-energy Lagrangean are those of
QCD, the strengths of the interactions are parameters which need to be
determined. In order to derive this Lagrangean from QCD, we can pursue a
dual strategy: On the one hand, develop a systematic theory of all lowenergy phenomena, identifying the relevant low-energy degrees of freedom
and fixing the strengths of their interactions from data. on the other hand,
determine these strengths directly from QCD (by lattice calculations and the
Chiral extrapolation of lattice data), or from QCD-inspired models of
medium energy physics. Familiarity with the phenomenology group
techniques and with numerical method is of great help.
Of particular fascination to us is EFT of low-and medium-energy
Nuclear Physics, i.e. the extension of Chiral Perturbation Theory to the one
and few nucleon sector. This includes in the one nucleon sector the
extension of Heavy Baryon Chiral Perturbation Theory by the  degree of
freedom, and in few-nucleon sector the two variants in which the pion is
either kept in the Lagrangian, or in which the pion is integrated out into the
coefficients of the Lagrangian only containing nucleon fields. The latter
variant is suitable for high-accuracy calculations of processes at very low
energies, i.e. at scales relevant for astrophysical applications like big-bang
nucleosynthesis, stellar fusion cycles, supernova scenarios and neutron stars,
and for the determination of neutrino masses e.g. from SNO experiment or
triton β -decay. The variant pion full attempts to bridge the gap between
QCD and the phenomenology of nuclear physics, complementing the more
traditional approach of potential models. The few-nucleon system is
specially challenging as it necessitates an understanding of the nonperturbative aspects of EFT.
As no free neutron targets exits, one must understand binding and
exchange current effects in light nuclei if nucleon properties are to be
extracted from experiments with a minimum of theoretical assumption. A
host of calculations suggests itself by the large number of experiments
which have been conducted recently, are running or planned in the range of
validity of this theory, as mentioned above.
Application of EFT to nuclear matter will return to further
understanding of heavy-ion collisions at low energies, of neutron stars,
supernova and other complex systems. it also requires a detailed
understanding of condensates and many-body phenomena in Nuclear EFT.
Data from the new precision experiments is the one- and few-nucleon add
to this enthusiasm.
On the conceptual level, a major goal is to establish at which
momentum scale nuclear EFT breaks down. Indications that the range of
validity could extend to momenta of more than half a Gev make one
optimistic to compute pion and  production processes. To understand the
size of the coefficients in the effective Lagrangean by matching them to
QCD-inspired models of medium-energy hadronic physics is another
important task. Together with contact to lattice data by e.g. Chiral
extrapolations of lattice results to physical quark masses, this will help
establish a direct relation between the high-energy QCD lagrangian, written
in terms of quarks and gluons, and the non-perturbative, low-energy sector
of QCD. In this approach, one can profit strongly from the insights and tools
of potential models.
Another EFT of QCD is Non-Relativistic QCD (NRQCD),
describing the strong interactions in systems containing heavy quarks. My
attention focused there on establishing a systematic power counting.
NRQCD also serves as an interesting case in which one can directly relate
parameters of the effective Lagrangean with the underlying theory of QCD.
Many problems in non-relativistic and non-perturbative field
theory are found in a similar setting in NRQCD.
During the last few years, nuclear pionless Effective Field
Theory (EFT) has been applied to two-, three-, and four-nucleon systems
and recently developed pionless Effective Field Theory is particularly suited
to high order precision calculation. An example of a precise calculation is
the reaction np  γd , the big-bang nucleosynthesis (BBN)predication for
primordial light element abundances uses this cross section as an input. A
precise estimate of this cross section was computed to 1 % error for center
of mass energies E < 1 or E 1 Mev. At the energies relevant for BBN,
0.02  E  0.2 Mev, the isovector electric transition E1v and isovector
magnetic transition M1v give the dominant contributions. The deuteron
photo-dissociation cross section, which is related to the capture cross
section, agrees very well with the existing data. The four-nucleon-one
photon operator contribution to E1v is determined from the related deuteron
photo-disintegration reaction.
The three body EFT calculations have so far been confined to
nucleon-deuteron system. For example nucleon-deuteron scattering in all
channels expect the S 1 -wave to be calculated to higher-orders using only
2
(EFT)
two-nucleon input and the triton binding energy is found to be B3
(exp)
Mev in Next to leading order close to the experimental B3
= 8.35
= 8.5 Mev .
On the other hand, pionless EFT has been recently applied also to
the four-body system with contact interactions and large scattering length at
leading order by Platter. The binding energies of the 4He tetramer and the
alpha-particle have been calculated and it is in a good agreement with
experimental value.
Also in the last decade, Chiral pionfull EFT has been established as
standard procedure in a systematic and model-independent way for
calculation of the properties of 3N, 4N, and even 6N systems at low energy,
where spontaneously broken Chiral symmetry of QCD is in fact the cornerstone of this method. With regard to electromagnetic probes the strength of
the Chiral EFT with a pionfull procedure is indeed the automatic
incorporation of gauge symmetry, Meissner. Works on this problem has
already been started, although still it is in the early stage.
Recently, we have calculated the cross section of radiative capture
process nd  Hγ . We applied pionless EFT to find numerical results for
the M1 contributions for this capture process where incident neutron
energies relevant for BBN are, 0.02  E  0.2 Mev. At this energy our
3
calculation is dominated by S-wave state and magnetic transition M1
contribution. We have also calculated the cross section of radiative capture
process
1%.
nd  3 Hγ for the first time at zero energy with error less than
RQP1-4
GRAVITATIONAL THERMODYNAMICS, THE COSMOLOGICAL
CONSTANT AND QUANTUM GRAVITY
Assaleh Fateen
Al-Quds Institute for Studies of Knowledge Genesis, Jerusalem, Palestine
By using the functional integral approach with a new proposal of
the boundary conditions which stated as “The boundary condition of the
universe is the thermal equilibrium itself”; the calculations of the
gravitational microcanonical partition function within a prototype model of
semiclassical gravity produce a Planckian distribution of gravitational
configurations, reveal the existence of a quantum gravitational curvature
constant , and prove false the concept of entropy of any Euclidean solution
of Einstein equations. As a result a new gravitational Schroِdinger’s
equation was formulated with a time term; it satisfies the classical constraint
of canonical gravity if and only if a dimensional reduction is occurred. It is
shown that the right hand side of Einstein’s Equation is precisely the
eigenvalues of their left hand side. The solutions of this new gravitational
Schrِdinger’s equation bypass the singularity theorems by making the
gravitational wave function! goes to zero when the scale goes to zero. The
article introduces a new cosmological history, where a Multi-Dimensional
Macro-Cosmos shall be shown to be representing our observable universe
from the very small structures to the very large ones where the extra
dimensions are not compactified. Ultimately, it is shown that analogues to
the discrete energy levels of electron in atom, discrete dimensional levels,
each with its own discrete timing level, are the general feature of the
quantized global space-time structure.
Key words: gravity, quantum, thermodynamics, fundamental
RQP1-5
SU(4) COLOR CHARGES POTENTIALS
Sedigheh Deldar, Shahnoosh Rafibakhsh
Department of Physics, University of Tehran, Iran
We have studied the confinement of heavy color sources in SU(4)
gauge groups, using thick center vortices model. Center vortices are among
the candidates which are believed to be responsible for the confinement of
static sources. SU(4) gauge group has two type of vortices. In this paper
potentials between heavy sources of representations fundamental, 15
(adjoint), 10, 20s and 35s are studied using both type of SU(4) vortices.
RQP1-6
CHIRAL TWINS: A SEMICLASSICAL VIEW.
Sh.S. Malik,
Dept. Phys.,Guru Nanak Dev Univ., Amristar, India.
During the last decade, two novel types of rotational bands,
namely, the Magnetic Rotation (MR) and the Chiral twins have been
observed, which have required completely now theoretical interpretations.
Nearly 130 MR band spread over the four mass chains A 80, 110, 130 and
190 are now well established experimentally [1] and the tilted axis cranking
(TAC) model explains successfully the various features of these bands.
Two early degenerate ΔI=1 bands in 134Pr were observed [2] and
calculation based on the 3-dimensional TAC model using the Δπh 11  νh 11
2
2
configuration strongly suggested a Chiral character for the first time. This
chirality results when the angular momenta of the valence proton, the
valence neutron and the core tend to be mutually perpendicular. The
resulting aplanar total angular momentum can be arranged into a left- or a
right- handed system, which differ by intrinsic chirality; the two systems are
related by the Chiral operator (a combination of time reversal and a rotation
by 180 o ). When Chiral symmetry is thus broken in the intrinsic frame, the
necessary restoration of the symmetry in the laboratory frame manifests
itself as pair of degenerate ΔI=1 bands.
We already had presented a, discussion of the non-linear dynamical
of the axial symmetric particle rotor model for high j orbital and its
semiclassical quantization (SCQ) around the various fixed points[3] it was
pointed out that the SCQ around metastable fixed points c± supports a bannd
whose features are similar to the superdeformed band. In the present study,
nucleus is assued to consist of a triaxial core plus one valence high j (h11 )
2
particle. The Hamiltonian is given by


R i2
1
 kr 2  cos Y 20 
sin  Y 22 Y 2  2  
(1)
2j
2
i


Six equations of motion for j 1 , j 2 , j 3 , I 1 , I 2 , I 3 , are obtained by
using the properties of Poisson brackets for angular momentum Two
Constraints viz. the conservation of (i) total angular momentum
H= 
I
2

 I12  I22  I32 and
(ii) the single particle angular momentum
j
2

 j12  j 22  j 32 ,
give three plane stationary states. For triaxial shape  0  γ  30 , the system
lies in the 2-1 plane with A1  A2  A3 , where A=
2
is the inertia
2J
parameter. The dynamics of the system is developed in this plane by using
small oscillations and time variatied angular momenta are obtained as:

1
1
1
I3  t  = c1 cos λ1 t 
c 2 sin λ1 t  c 3 cosh λ 2 t 
c 4 sinh λ 2 t 
2 
λ1
λ2

(2)
and

1
1
1
j 3  t  = c1 cos λ1 t 
c 2 sin λ1 t  c 3 cosh λ 2 t 
c 4 sinh λ 2 t 
2 
λ1
λ2

(3)
where
c1 =I3  0 +j 3  0
and
c 2 =I3  0  +j 3  0  ,
c3 =I3  0 -j 3  0 ,
c1 =I3  0  +j 3  0 . Here, λ1 and λ 2 are the roots of the coupled differential
equations. We have analyzed both magnetic rotation and Chiral twins by
using SCQ. We already have established that oblate shape support the MR
phenomena [4]. Two different roots are obtained on1y in the triaxial shape,
which sustain two bands. We also have noticed the non-linear effect in the
observed chiral twins and it is nicely obtained within SCQ.
[1] Amita, A. K. Jain and B. Singh, At. Data aud Nucl. Data, Tables 74
(2000) 283. See also www.nndc.bnl.gov/nndc/mag-dip-rot-bands/.
[2] C. Petrache et al, Nucl. Phys. A597 (1996)106.
[3] A. K. Jain, M. Dudeja, S. S. Malik and Z. Ahmed, Phys. Lett. B392
(1997) 243.
[4] S. S. Ma1ik et al, Nucl. Phys. A.732 (2004)13.
Session IKN1
IKN1-1
FIRST RESULTS FROM THE G0 PARITY VIOLATION
EXPERIMENT CARRIED ON AT JLAB.
Louis Bimbot, For the G0 Collaboration group
Institut de Physique Nucléaire d’Orsay, France
Parity violation measurement in elastic scattering of polarized
electrons is a powerful tool to access the strange part of nucleon form
factors. To obtain a full separation of electric magnetic and axial component
at a given Q2
value, the measurements at two different angles are
necessary. We will present briefly the experiment to focus on the first results
obtained at forward angle for the G0 experiment and present the future setup
to be installed for backward angle complementary measurements.
IKN1-2
AN EGYPTIAN MOVE TOWARDS K0 STANDARDIZATION.
E.A. Eissa,
Reactor and Neutron Physics Dept., NRC, AEA, Cairo, Egyp.
essameissa@yahoo.com
The activation equation is formulated in terms of the sensitivity
concept. A FORTRAN computer program was constructed for calculating
the total sensitivity of a characteristic gamma-ray line (in gamma-ray/s.
lement) emitted by a product radioisotope following thermal
and epithermal neutron capture. The program also deals with the corrections
for the spectrometer dead time and decay post irradiation and during the
measurement. Another FORTRAN program was constructed for correlating
the irradiation parameter f (thermal to epithermal neutron flux ratio) with the
1/E law. Standard samples such as iron, gold, zirconium, cobalt and
tungsten can be placed in a can and irradiated inside an irradiation box at the
core periphery of the reactor in order to determine the reactor parameters f
IKN1-3
ACTIVATION ANALYSIS BASED ON SECONDARY NUCLEAR
REACTIONS
S. Mukhammedov, A. Khaydarov
Institute for Nuclear Physics of UzRAS pgt Ulugbek, Tashkent, Uzbekistan
Variety types of analytical techniques, founded on achievements of
nuclear physics, have been developed. For instance, there are known broad
range of activation analysis methods based on use of nuclear reactions with
thermal and fast neutrons, gamma rays and charged particles. There are two
directions of the using of the main sources of the nuclear projectiles at
development of the nuclear methods of the analysis. In the first, the particles
from the source are used directly for the excitation of nuclear reactions. In
the second, the particles from the source are used for the generating of
"intermediate" particles of other types, which, in turn, are used for excitation
of secondary nuclear reactions on under investigation chemical elements.
For instance, a nuclear reactor possible to use for development of the
traditional neutron activation analysis (NAA) based on the direct use of
thermal neutrons for excitation of (n, gamma) - neutron capture nuclear
reactions. In ditto time, neutrons possible to use for the generating of
secondary charged particles, which serve for excitation of nuclear reactions
on elements with small atomic number.
There are two variants in which both types of neutrons, as thermal,
so and fast neutrons are used:
The triton flow is produced by thermal neutrons flux, which excites
the nuclear 6Li(n, alpha) T reaction on lithium.
The recoil protons are produced as the result of (n, p) elastic or
inelastic scattering interaction of fast neutrons with nucleus of light
elements, for example, hydrogen.
In this work the possibility of the using secondary nuclear reactions
for determination of the contents some light and middle elements was
estimated.
The neutron activation analysis associated with two consecutive
reactions 6Li(n, alpha) T+16O(T, n) 18F is established to determine trace
amounts either of lithium or of oxygen in different samples. Besides, the
triton flow can be used for the determination of other light elements, for
instance, B, N, S and Mg.
The flow of secondary recoil protons are applied for the
development of proton activation analysis for the determination of large
concentration of Li, B, N, O, Ti, V and other elements. It is showed that the
detection limits of proton activation analysis for light elements could be
better than 10 ppm. We have named these techniques as the nuclear reactor
based charged particle activation analysis which complements traditional
neutron-activation analysis with using of the nucleus reactor for the
determination of some light elements.
Session NSR2
NSR2-1
ASYMMETRICAL NUCLEAR MATTER CALCULATIONS WITH
THE NEW CHARGE-DEPENDENT REID POTENTIAL
Hamidreza Moshfegh
Faculty member, University of Tehran, Tehran-Iran
The equation of state of asymmetrical nuclear matter has been
calculated spanning the whole asymmetric range with proton to neutron ratio
step   0.2 and the density domain up to 0.5 fm-3. The case of
symmetric nuclear matter (   0.1 ) and neutron matter (   0 ) for
Reid93 interaction are discussed . The result of our binding energy
calculation for asymmetrical nuclear matter with the Reid93 are presented in
this work.
Our results are comparable with our previous results with other
interactions such as AV18, AV14, Reid68 ,... . As we pointed out in our
previous work , Reid93 over binds nuclear matter. We studied the properties
of asymmetric nuclear matter in the formalism of lowest order constrained
variational method (LOCV). A full microscopic and self-consistent
calculation without any free parameter except the parameter included
interaction has been presented which enables us to check validity of
different empirical values. We use the new Reid93 potential which is
charge-dependence and has been fitted very accurately to the partial wave
phase shift up to J=9.
The results confirm the validity of the α law for the energy per
nucleon in the wide range of density and asymmetric parameter. The
symmetry energy coefficient at the saturation density obtained in this work
is about 33 Mev, this is in good agreement with the empirical value of about
30  4 Mev. Our equation of state for asymmetrical nuclear matter,
symmetric energy , incompressibility and other quantity are in overall
agreement with the other approaches such as the BHF, DBHF and
variational calculations.
2
NSR2-2
SCATTERING OF SKYRMION-LIKE STRUCTURES
Ramon Jose Cova
Dept de Fisica FEC, Universidad del Zulia, Venezuela.
rjcova@yahoo.com
We investigate the scattering of solitonic structures of topological
charge Q=3, 4, 5 in a CP1 planar model analogous to the Skyrme model of
nuclear physics. With fixed boundary conditions the model exhibits dualpolygon or π /Q scattering in the general case, but with periodic boundary
conditions the dual-polygon property holds only for tightly localized
solitons.
NSR2-3
NUCLEAR REACTIONS EXCITED BY RECOIL PROTONS ON A
NUCLEAR REACTOR
S. Mukhammedov, A. Khaydarov
Institute for Nuclear Physics of UzRAS pgt Ulugbek, Tashkent, Uzbekistan
The activation analysis based on secondary nuclear reactions
induced by recoil protons was investigated. The recoil protons are produced
on a nuclear reactor as the result of (n, p) inelastic and elastic scattering
interaction of fast neutrons with nuclei of hydrogen. As is well known, the
share of fast neutrons in energetic spectrum of nuclear reactor neutrons in
comparison with the share of thermal neutrons is small. Consequently, the
share of recoil protons being as result of fast neutron interaction with nuclei
of light elements, capable to cause the nuclear reactions, too small. Besides,
due to Coulomb barrier of nuclei the recoil protons can cause the nuclear
reactions only on nuclei of light and some middle elements. Our studies
have shown that observable yields have reactions, exciting on nuclei Li, B,
C, N, O, Ti, V and Cr.
We investigated the yields of radionuclides produced by (p, n)
nuclear reactions on 18 O, S, Ti and V. The samples for investigation were
prepared by dissolving metallic plates in tsar’s vodka. The mixture was
neutralized as an aqueous solution. In order to prepare the samples for
irradiation, these solutions of 2 ml volume were dropped into filter paper. At
following step the samples are dried and put to the target-holder for
irradiation. Distilled water was used as the sample for oxygen. All samples
are placed into the target-holder and irradiated in nuclear reactor. The
radioactivity was counted with the calibrated high-ray
spectrometer connected to the Ge(Li) detector having high energety
resolution.
Chemical
elements
O-18
Radionuclides
18
F
Ti
48
16.18 d
V
51
27.8 d
V
Cr
Т1\/2
1.83 h
Е
%);
511 (1993,4)
2421.75-3),
2375,6 (0,010),
2240 (2,4), 1312
998), 983,3 (100),
944,3 (8), 511
(99,6)
320 (9,63)
Yields,
imp/s*mg
0,4
1,1
21,9
The dependence of yields on contents of chemical elements is
given in the table.
Our experimental results have demonstrated that the proton
activation analysis based on the application of secondary nuclear reactions is
useful tool to determine large contents of some light and medium chemical
elements. Detection limits for studied chemical elements are estimated
which for some elements are better than 10 ppm.
NSR2-4
THE HEAVY-ION INELASTIC SCATTERING AT INTERMEDIATE
ENERGY WITH EXCITATIONS OF NUCLEAR COLLECTIVE
STATES
K.M. Hanna1;2, K.V. Lukyanov2, V.K. Lukyanov2, Z. Metawei3,
B. Slowinski4;5, E.V. Zemlyanaya2
1
Math. and Theor. Phys. Dept., NRC, AEA, Cairo, Egypt
2
Joint Institute for Nuclear Research, Dubna, Russia
3
Phys. Dept., Faculty of Sc., Cairo Univ., Giza, Cairo, Egypt
4
Faculty of Phys., Warsaw Univ. of Technology, Warsaw, Poland
5
Institute of Atomic Energy, Otwock-Swierk, Poland
Excitations of rotational and vibrational nuclear states in the heavyion scattering are studied at energies about a hundred Mev/nucleon. The
interaction potential, caused by the internal collective motions in nuclei, we
consider to be the derivative of the spherically symmetrical elastic scattering
optical potentials, the phenomenological and microscopic (or semimicroscopic) one [1,2]. The effect of the multistep virtual excitations of
nuclear collective states on the differential elastic scattering cross section is
estimated. The inelastic scattering differential cross-sections with excitations
of 2 and 3 states of target-nuclei are calculated and compared with the
existing experimental data. We consider contributions of the Coulomb and
nuclear (real and imaginary) parts of interaction potentials and their
dependence on the incident energy and on different colliding nuclei.
[1]. V.K.Lukyanov, E.V.Zemlyanaya, K.V.Lukyanov // Preprint JINR P42004-115, Dubna, 2004, to be published in Phys.of Atomic Nuclei, 2005.
[2]. K.M. Hanna, V.K.Lukyanov, K.V.Lukyanov, B. Slowinski,
E.V.Zemlyanaya
// Proc. 4th Conf. Nucl.& Particle Phys.,(eds.M.N.H.Comsan and
K.M.Hanna),
Cairo Egypt Nucl.Phys Association, 2004, P.26-32; ibid nucl-th/0410015
and nucl-th/0412026.
NSR2-5
CALCULATIONS OF THE NUCLEUS-NUCLEUS MICROSCOPIC
OPTICAL POTENTIALS AT INTERMEDIATE ENERGIES
K. M. Hanna1 ; 2, I. N. Kuhtina 2, K. V. Lukyanov 2, V. K. Lukyanov2, B.
Slowinski3;4, E. V. Zemlyanaya2
1
Math. and Theor. Phys. Dept., NRC, AEA, Cairo, Egypt
2Joint Institute for Nuclear Research, Dubna, Russia
3Faculty of Phys., Warsaw Univ. of Technology, Warsaw, Poland
4Institute of Atomic Energy, Otwock-Swierk, Poland
Three types of microscopic nucleus-nucleus optical potentials are
constructed using three patterns for their real and imaginary parts. Two of
these patterns are the real VH and imaginary WH parts of the potential which
reproduces the high-energy amplitude of scattering in the microscopic
Glauber-Sitenko theory. Another template VDF is calculated within the
standard double-folding model with the exchange term included. For either
of the three tested potentials, the contribution of real and imaginary patterns
is adjusted by introducing two fitted factors. Correspondingly, using the
numerical code ECIS, the elastic differential cross-sections were fitted to the
experimental data on scattering of the 16; 17O heavy-ions at about hundred
Mev/nucleon on different target-nuclei. The relativization effect is also
included. The Tables of the obtained factors which renormalize the strengths
of the real and (or) imaginary parts of the calculated microscopic potentials
are given.
NSR2-6
MEASUREMENT AND ANALYSIS OF CROSS SECTIONS FOR
(P,X) REACTIONS ON NATURAL MOLYBDENUM.
M. B. Challana, M. A. Abou-Zeidb, and M. N. H. Comsana
a
Experimental Nuclear Physics Department, NRC, AEA, Cairo, Egypt.
b
Physics Department, Mansoura University, Mansoura, Egypt.
Excitation functions (EFs) for the reactions NatMo(p,x)92mNb, and
Nat
Mo(p,x)94,95m,95g,96m+g,99mTc up to 18MeV from threshold have been
measured employing the stacked foil activation technique, and using high
resolution HPGe gamma spectrometry. Utilizing the simultaneous
measurement of the excitation function of NatCu(p,x)63Zn, NatCu(p,x)65Zn,
and NatTi(p,x)48V monitor reactions. The theoretical analysis of the EFs has
been done employing both the semi-classical as well as quantum mechanical
codes which include compound nucleus and pre-equilibrium (PE) emission
into consideration. In general, theoretical calculations agree well with the
experimental data. Effect of various free parameters used in the calculations
has also been discussed. A significant contribution of pre-equilibrium
component has been observed at these energies.
Keywords: Protons, Cross Sections, Nuclear Reactions, HPGe-Detector,
Molybdenum, and Natural Targets.
NSR2-7
DETERMINATION OF CROSS SECTIONS FOR THE REACTION
181
Ta(n, gamma)182Ta m1+m2+g AT NEUTRON FILTERED BEAMS
I. Kadenko1, R. Yermolenko1, O. Gritzay2, V. Libman2
1-Taras Shevchenko National University of Kyiv, Ukraine
2- Institute for Nuclear Research of NASU, Kyiv, Ukraine
181
Ta as a reactor material is very interesting to study it’s
interaction with neutrons. Moreover, the data for the 181Ta(n,gamma) 182Ta
reaction cross section is rather incomplete or even absent at all. Only some
results do exist, measured in the early 60-th last century [1]. One of the
skipped energy regions for this reaction is 2 Kev -150 Kev.
For measurements of these reaction cross sections there was used
the neutron filtered beam technique developed at the Kyiv research reactor
[2] Measurements performed on the 2-nd and 8-th channels at the Kyiv
Research reactor followed by the measurement of gamma-ray spectra at
HPGe spectrometer equipped with our own developed technique to take into
account both “dead-time” and pulse pile-up effects. True coincidence and
gamma-ray self-absorption effect were taken into account as well [3]. For
neutron flux density monitoring the 10B and 115In have been used. Actual
values of neutron flux densities were as follows: 1) the 2 keV filter 4.81.106 n/cm2 x s; 2) the 59 keV filter - 1.90 .106 n/cm2 x s; 3) the 144
Kev filter - 3.87.106 n/cm2 x s.
Mentioned below the average energies of quasi-mono-energetic
beam for the used filters and their energy widths were calculated taking into
account a real shape of neutron spectra after passing of reactor neutrons
through the filter materials.
The following results for the 181Ta(n, gamma)182Tam1+m2+g
reaction cross sections have been obtained.
CrossDelta-Cross# Neutron en.
Delta-Neutron en.
section
section
1
1.9 keV
1.5 keV
1.908 mb
0.170 mb (9%)
2
58.7 keV
2.7 keV
0.419 mb
0.076 mb (18%)
3
144.5 keV
16.8 keV
0.331 mb
0.043 mb (13%)
[1] Cox, S.A. Neutron Activation Cross Section for Br79, Br81, Rh103,
In115, I127, and Ta181, Physical Review. V133, N2B. B378-B383(1964).
[2] Gritzay O.O., Kolotyi V.V., Kaltchenko O.I. Neutron filters at Kyiv
Research
reactor,
Preprint
KINR-01-6,
2001.
[3] Begun S.V., Kadenko I.M., Maydanyuk V.K. “The Account of the
Effects of Self-Absorption and True Coincidence Summing of GammaQuanta in the Neutron Activation Method”, Book of Abstracts of LV
National Conference on Nuclear Physics "Frontiers in the Physics of
Nucleus", Peterhof, St.-Petersburg, Russia, June 28-July 1, 2005, P. 339.
Session PFP
PFP-1
ELECTROSTATIC SOLITARY STRUCTURES IN A CHARGE
VARYING PAIR-DUST PLASMA
M. Tribeche and L. Ait- Gougam
Faculty of Sc.-Phys., Theor. Phys. Lab., Univ. of Bab-Ezzouar, Algeria.
Large amplitude electrostatic solitary structures are investigated in
an unmagnetized charge varying [1] pair-dust plasma in which electrons and
positrons have equal masses [2]. The well- known pseudo- potential analysis
is used. Our investigation may be taken as a prerequisite for the
understanding of the electrostatic solitary waves that may occur in space
dusty plasmas.
Keywords : dusty plasmas, solitons, variable charge, localized structures.
[1]- M. Tribeche, T. H. Zerguini, and H. Houili, Phys. Plasmas 9, 4879
(2002).
[2]- P. K. Shukla, N. N. Rao, M. Y. Yu, and N. L. Tsintsadze, Phys. Rep.
135, 1 (1986).
PFP-2
NONLINEAR PLASMA VOIDS (HOLES) IN A CHARGE-VARYING
DUSTY PLASMA.
M. Tribeche, L. Ait- Gougam, K. Aoutou, and T. H. Zerguini
Faculty of Sc.-Phys., Theor. Phys. Lab., Univ. of Bab-Ezzouar, Algeria.
Nonlinear large amplitude plasma voids (stable dust-free regions)
[1] are investigated in a charge varying dusty plasma [2]. Numerical
solutions of highly nonlinear equations are carried out including dust
charging and ion trapping. It is found that under certain conditions the effect
of dust charge variation can be quite important. In particular, it may be
noted that the dust charge variation leads to an additional enlargement of the
nonlinear plasma voids.
Keywords : dusty plasmas, solitons, variable charge, voids.
[1]- M. Tribeche, T. H. Zerguini, and H. Houili, Phys. Plasmas 9, 4879
(2002).
[2]- J. Goree, G. E. Morfill, V. N. Tsytovich, and S. V. Vladimirov, Phys.
Rev. E 59, 7055(1999).
PFP-3
THE CATHODIC REGION OF THE LUMINESCENCE
DISCHARGE
Liliana-Violeta Constantin
National College "ELENA CUZA" , Bucharest Romania
lilianaaa29@yahoo.com or liliana2009constantin@yahoo.com
The Plasma Physics represents a modern discipline which made her
appearance especially because of multiple applications,becoming today one
of the most dinamic domains of science.
In the history of Plasma Physics there can be distinguished two
main directions:the electric discharges and the phenomenons related to the
plasma radiations.
The present work is limited at the study of the cathodic region of
the luminescence discharge .At the beginning there are given some essential
information about plasma, then is defined the concept of plasma based, at
first, on the fact that plasma represents a system of lots of objects, which
contains in the composition the neutral, the electronic, the ionic, the
photonic element or component and the electromagnetic fields. There are
presented the characteristics of plasma matter, determinated by the
macroscopic cvasineutrality of plasma, the Debye length, the Landau length,
the screened coulombian potential, the Debye sphere, the plasma
oscillations, the Larmour frequency. The plasmas can be classified from
many points of view.
After the presentation of the Volt-Amper characteristic and the
finding of the general criterion of stability of the electric discharges in the
gas atmospheres there are described the main parts of the luminescence
discharge. In the forward parts it is explained the mechanism structure of
their forming.
After the evidence of the importance of the cathodic parts of the
luminescence discharge and after the analysis of the factors which make an
influence on the normal and abnormal potential fall, it is presented the
appearing mechanism of a discharge without dark cathodic space.
It is sketched the deduction of the equations of parameters of
similitude for the unnormal luminescence discharge. It is experimentally
verified the fact that in the system of the normal luminescence discharge, the
cathodic fall and the current density are constant. It is presented the
characteristics family named Güntherschulze j=f(p) obtained in a
luminescence discharge in air, at low pressures for different tensions of
burning. Also, it is experimentally verified that the ratio between the current
density and the square of the pressure doesn’t depend on the pressure for a
given cathodic fall.
Key Words: Plasma, Luminescence Discharge, Cathodic Region.
Session AR1
2- Daresbury Laboratory, Warrington, Cheshire, UK
Breast cancer is the most widespread cancer in women. The
incidence rate is continuously increasing in many parts of the world. In the
industrial world the rate is close to about one in 12 women. It is a major
cause of death in middle – aged women of 33-55 years. The need for early
and more accurate diagnosis methods for breast cancer has been identified
as a major factor that could help to save the lives of many women.
This project presents the application of small angle x-ray scattering in
differentiation between normal and tumor breast tissues. Small angle x-ray
scatter (angles less than 2o) is predominantly coherent. Interference effects
occur among the coherent photons, that are characteristic for materials.
These effects give rise to exhibit one or more peaks in coherent
scattering spectrum.
At very low momentum transfer, over the range of 0.0017- 1 nm-1,
angular dispersive method was used at Daresbury laboratory in UK. In this
approach, synchrotron source was used. The set up at synchrotron unit
includes: bending magnet, monochromator, slits, front ion chamber, sample
holder, back ion chamber, and proportional counter detector. 150 normal
and tumor breast tissue samples were examined by monochromatic x-ray
beam at 8 kev, 2 m camera lengths. Also 34 samples were examined to study
formalin effect, used to preserve tissues.
In angular dispersive method, results show there is a noticeable
difference in coherent intensity integral between tumor and normal breast
tissues in the Q range of 0.4 - 0.7 nm-1. It has been found that an increase of
the coherent scattering intensity, especially between 0.4 – 0.7 nm-1, can be
considered as a sign of tumor presence. Also, there was no differentiation
between tumor and normal breast tissues after preserving tumor in formalin
10%.
Collagen diffraction peaks can be seen in Q values of 0.3 and 0.45
nm-1.
AR1-1
SMALL ANGLE X-RAY SCATTERING APPLICATION WITH
SYNCHROTRON FACILITY IN DIFFERENTIATION BETWEEN
NORMAL AND TUMORAL BREAST TISSUES
V. Changizi1, C. J. Hall2, G. Grossmann2
1- School of Paramedical, Tehran Univ. of Medical Sciences, Tehran, Iran
AR1-2
DIELECTRIC SPECTROSCOPY TECHNIQUE APPLIED TO
STUDY THE BEHAVIOUR OF IRRADIATED POLYMER
R. Saoud, A. Soualmia, C.A. Guerbi, N. Benrekaa
Faculty of Phys., Dept. of Material Phys., Univ. of Sc. and Technologies
U.S.T.H.B. BP 32 El-Alia – BabEzzouar – Algiers – Algeria
PFP-4
SIMULATION OF BOOTSTRAP CURRENT BY HIRSHMAN
COLLISIONLESS MODEL IN DAMAVAND TOKAMAK
M. Harzchi, H. Farid Yousefi, N. Alinejad
Dept. of Magnetic Confinement, Nucl. Fusion Res. Center AEOI, Tehran
Grad-Shafranov equilibrium equation for fixed boundary condition
in flux coordinate system have been calculated and bootstrap current in
Damavand Tokamak have been obtained by Hirshman single-ion
collisionless model. And shows that we can expect a large ratio of bootstrap
current in relation to the equilibrium current.
Relaxation spectroscopy provides an excellent method for the study
of motional processes in materials and has been widely applied to
macromolecules and polymers. The technique is potentially of most interest
when applied to irradiated systems. Application to the study of the structure
beam-irradiated “Teflon” is thus an outstanding opportunity for the
dielectric relaxation technique, particularly as this material exhibit clamping
problems when subjected to dynamic mechanical relaxation studies. A very
wide frequency range is necessary to resolve dipolar effects. In this paper
we discuss some significant results about the behavior and the modification
of the structure of Teflon submitted to weak energy radiations.
AR1-3
THE NEUTRON ACTIVATION ANALYSIS OF THE ANCIENT
BONE REMAINS
A. Vasidov , N. S. Osinskaya, Sh. Kh. Khatamov, T. Rakhmanova,
A. Sh. Akhmadshaev*
Inst. of Nucl. Phys., Uzbekistan Academy of Science, Tashkent, Uzbekistan
*Museum of Geology, The State Committee Geology of Rep. of Uzbekistan
samad@inp.uz
In the work results of the instrumental neutron activation analysis
(INAA) of ancient bone remains of dinosaurs, bear, archantrop (ancient
person) found out in territory of Uzbekistan are presents. Also were subject
to INAA a bone of dinosaur from Mongolia, standard a bone of the person
and soils taken from a surface and from within of the femoral joint of a
dinosaur. The method INAA determines of contents about 30 elements in
bones and soils in an interval 0.043 – 3600 mg / kg. Among found elements
Ca (46 %), Sc, Cr, Fe (up to 2.2 g/kg), Ni, Zn, Sr (up to 3.6 g/kg), Sb, Ba,
Sb and some other are basic components bones. The contents of some
elements in bones dinosaurs are reaches very high values 280-3200 mg / kg,
is especial lanthanides La, Ce, Nd, Sm, Eu, Tb, Yb and Lu. In our opinion,
lanthanides and some other elements As, Br, and Mo in bones were formed
as a result of fission of uranium and trans uranium elements. Because in
bones of dinosaurs is very high contents of uranium, up to 180 mg / kg, and
thorium of 20 mg/ kg. However U and Th in soils are 4.8 mg/kg and 3.7 mg
/ kg, respectively. The content of uranium in bones of the archantrop is 1.53
mg / kg, in while U in standard a bone of the person is less than 0,016
mg/kg.
AR1-4
THE PHYSICAL BASIS OF THE SPUTTERING PROCESS BY
ENERGETIC ION BOMBARDMENT.
E. Almahmood,
UK
The abstract is not available
AR1-5
NUCLEAR TECHNIQUES FOR ELEMENTAL ANALYSIS AND
INDUSTRIAL APPLICATIONS.
B. I. Kurbanov,
Inst. of Nuclear Phys., Academy of Sciences of Uzb. Tashkent, Uzbekistan.
A problem standing in front of modern analytics – providing
multielement, express, high sensitive and instrumental element analysis, can
be solved by means of development of new or combination of existing
methods.
This work is devoted to study of possibilities of expanding
simultaneously determined elements by means of combining two nuclear –
physics methods: neutron – radiation and neutron – activation analysis of
element content using radionuclide neutron source. To this end, an
experimental device is developed based on Cf252 – neutron source with
yield of 7x107 neut./sec. The device consists of two parts: 1 –st is for
spectrometry instantaneous gamma-radiation of neutron capture and 2-nd is
for measuring residual activity of samples.
Measuring system includes Ge (Li) – detector ( for measurement of
residual activity ) with sensitive volume of crystal – 40 sm3 and NaI (Tl) –
detector ( for measurement of instantaneous gamma-radiation of neutron
capture) with sensitive crystal size ( 80x80 )mm .
Density of thermal neutron flux on sample is 1,6 x 104 neut./cm2 x
sec. For the time of irradiation by neutron and measurement of instantaneous
gamma-radiation equal to 30 min, possibility of determining a number of
elements is shown: H, B, N, S, K, Cd, Hg in model samples. For this time
some elements get activated in these samples such as: Al, Ti, Sc, Mn, La.
After finished measurement in 1-st part of device the samples is in 2-th
part of device, were measured induced activity during 5 min.
The obtained results show that by means of combining the two
methods it is possible to expand their possibilities and to apply for solving
practical problems.
Session DI1
DI1-1
GaAs DETECTORS I: COMPENSATED GaAs INSTEAD OF SI
GaAs(EL2).
M. Ardyshev,
Russia
The abstract is not available
DI1-2
GaAs DETECTORS II: DETECTORS, MODULES, IMAGES
D. Mokeev
Siberian Physicotechnical Inst. of Tomsk State University, Tomsk, Russia
Detectors for use with a scanning device have been developed
based on the technique of compensated semi-insulating GaAs. The detectors
are made as a line of 256 elements with 110 mm pitch. Dark current does
not exceed 10 pA per one cell in the detectors for which guard ring can not
be used in principle. Nominal supply voltage is 0 V. Testing of the detectors
has been carried out at the Budker Institute of Nuclear Physics. The detector
parameters have been studied, looking at the dependence with radiation
dose, with the applied bias voltage and with the gamma photon energy,
using photons in the range of 30-60 keV. Images of a test-object were
obtained with a resolution of 5 line pairs per mm.
DI1-3
GIANT
DIELECTRIC
MAGNETOCAPACITANCE
OF
COMPOSITE SILICATE-GLASSES AS SENSITIVE REACTIVE
PROPERTY
FOR
PARTICLE
DETECTORS
AT
LOW
TEMPERATURES
Marco Barucci1A, Luca Foggetta2B, Andrea Giuliani2B, Giancarlo Jug2C,
Claudia Nones3B, Emiliano Olivieri1A, Marisa Pedretti2B, Lara
Risegari1A, Samuele Sangiorgio2B, Guglielmo Ventura1A
DERBY Collaboration (Firenze, Milano, Pavia - ITALY)
1
Dipartimento di Fisica, Universita' di Firenze, Via G. Sansone n.1, Polo
Scientifico di Sesto Fiorentino, 50019 - Sesto Fiorentino (Firenze, Italy)
2
Dipartimento di Fisica e Matematica, Universita' dell'Insubria, Via
Valleggio 11, 22100 Como (Italy)
3
Dipartimento di Fisica, Universita' di Milano Bicocca, P.zza della
Scienza3, 20162 Milano (Italy)
A
Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Firenze
B
Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Milano
C
Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Pavia
Recent experiments on the thermal, dielectric, and polarization
properties of multicomponent silicate glasses at low temperatures have
revealed a giant response to external perturbations in the presence of very
weak applied magnetic fields. A quantum statistical-mechanics theory will
be presented to explain quantitatively these puzzling experimental findings,
notably the giant magnetocapacitance enhancement at B<1000 G and T<100
mK.
The theory is based on an extension of the standard tunneling
model for structural low-temperature glasses, suitably adapted to the
problem. These multicomponent glasses hold the promise of becoming
useful new temperature sensors for bolometric detection of rare events in
particle physics research. Working detectors of neutrinos from, say, doublebeta decay in TeO_2 crystal elements like in the CUORE experiment under
the Gran Sasso, make use of resistive sensors coupled to the TeO_2 crystals
that are made up of doped Ge wafers. These resistive sensors have the
advantage of speed in response, but are intrinsically limited by the
dissipative nature of the temperature-voltage conversion. We have therefore
proposed to use capacitive thin-film low temperature sensors made up of a
suitable glass film that, although not so quick in response, can offer
theoretically a much higher inherently signal-to-noise-ratio based on the
dielectric properties of the glass. It will be reported how the new sensor can
be coupled to the bolometric detector and how its linear dependence of the
dielectric constant as a function of the logarithm of the temperature for
T<100 mK can be exploited to make improved particle detectors. The
theory for the dielectric properties of low-temperature glasses will also be
reviewed on the basis of the tunneling model and recent measurements of
their function as bolometric sensors will be presented and discussed.
DI1-4
NINTH DEGREE POLYNOMIAL FIT FUNCTION FOR
CALCULATION OF EFFICIENCY CALIBRATIONS FOR Ge(Li)
AND HPGe DETECTORS
M. A. M. Uosif
Physics Department, Faculty of Science, Al-Azhar University, Assiut, Egypt
A new 9th degree polynomial fit function has been constructed to
calculate theoretically the absolute γ-ray detection efficiencies (ηTh) of
Ge(Li) and HPGe Detectors, for calculating the absolute efficiency at any
interesting
γ–energy in the energy range between 25 and 2000 keV and
distance between 7.5 and 148 cm. The total absolute γ -ray detection
efficiencies have been calculated for six detectors, three of them are Ge(Li)
and three HPGe at different distances. The absolute efficiency of the
different detectors was calculated at the specific energy of the standard
sources for each measuring distances. In this calculation, experimental
(ηExp) and theoretical (ηTh) have been calculated. Seven calibrated point
sources Am-241, Ba-133,Co-57,Co-60,
Cs-137, Eu-152 and Ra-226 were used. The uncertainties of
efficiency calibration have been calculated also for quality control. The
measured (ηExp) and (ηTh) calculated efficiency values were compared
with efficiency, which calculated, by Gray fit function (ηThG). The results
obtained on the basis of (ηExp) and (ηTh) seem to be in very good
agreement.
DI1-5
COLTRIMS IMAGING TECHNIQUE: A MULTI-COINCIDENCE,
MULTI-HIT CAPABLE AND HIGH RESOLUTION REACTION
NANOSCOPE FOR EV AND SUB EV PARTICLE DETECTION.
F. Afaneh etal,
Jordan
The abstract is not available
DI1-6
NEUTRON DETECTOR AT THE FOCAL PLANE OF THE SET UP
VASSILISSA.
A.I. Svirikhin etal,
JINR, Dubna, Russia
The abstract is not available
Session HEP2
HEP2-1
MONTE CARLO SIMULATION OF THE INTERACTION OF UHE
COSMIC RAYS WITH THE BACKGROUND RADIATIONS.
R. Attallah etal,
Algeria
The abstract is not available
HEP2-2
THE SPIN RESPONSE OF THE NUCLEON AND ITS
IMPLICATION FOR THE GERASIMOV-DRELL-HEARN SUM
RULE
Eed M. Darwish* and Mohamed A. El-Zohry
Phys. Dept., Faculty of Science, South Valley Univ., Sohag 82524, Egypt
*eeddarwish@yahoo.com
The helicity dependence of pion photoproduction from the nucleon
in the region of the  1232  -resonance is investigated. The differential
polarized cross-section difference for parallel and antiparallel helicity states
is predicted and compared with recent experimental data. The contribution
of N  γ,π  N to the spin response of the nucleon, i.e. the asymmetry of the
total photoabsorption cross section with respect to parallel and antiparallel
spins of photon and nucleon, is calculated over the region of the  1232  resonance. Furthermore, the contribution to the Gerasimov-Drell-Hearn
integral is explicitly evaluated by integration up to a photon energy of 550
MeV. A quite satisfactory agreement with existing experimental data from
the GDH collaboration is obtained.
HEP2-3
ELECTRON POSITRON PAIR PRODUCTION IN THE
RELATIVISTIC COLLISION OF HEAVY NUCLEI AT FINITE
TEMPERATURE.
Kh. Rakhimov,
Uzbekistan
The abstract is not available
HEP2-4
MULTIFRAGMENTATION STUDIES IN 84KR INTERACTIONS
WITH NUCLEAR EMULSION AT AROUND 1 A GeV.
V. Singh,
Taiwan
The abstract is not available
HEP2-5
NNLO
CORRECTIONS
FOR
NON-SIGLET
PARTON
DISTRIBUTIONS IN THE NUCLEON.
Ali N. Khorramian
Phys. Dept. (Farmanieh), Inst. for Studies in Theoretical Phys. & Math.
(IPM) 9395-5531, Tehran, Iran
khorramiana@theory.ipm.ac.ir, Alinaghi.Khorramian@cern.ch
We use recently calculated the next-to-next-to-leading order
(NNLO) contributions to anomalous dimension governing the evolution of
non-singlet quark distributions in the nucleon. We use the xF3 data of the
CCFR collaboration to obtain some unknown parameters which exist in our
model in higher order. In the fitting procedure, Bernstein polynomial
method is used. The results of valence quark distributions in the nucleon and
in the LO, NLO and NNLO, are in good agreement with the available
theoretical model.
A
GT=15./A
114
116
118
120
122
3.42
3.62
3.77
3.88
3.95
118
120
4.38
4.23
Our results
GT=5.2/A0.7
A
A
In Sn[ ]
3.36
4.75
3.56
4.92
3.72
5.07
3.82
5.17
3.90
5.23
A
SbASn[]
4.60
4.69
4.45
4.55
EXP.
4.47
4.66
4.79
5.00
5.11
4.53
4.53
Session NSS2
NSS2-1
SPIN CUT-OFF FACTOR FROM THE LOW LEVEL SCHEME
Laleh Farhang Matin
Faculty of science, Shiraz university, Iran
laleh.matin@gmail.com
Spin cut–off factor yields information on the spin dependence of
the nuclear density, shape of the nucleus, and its effective moment of inertia,
which the last one gives us an estimate of the order of the rigidness of the
nucleus. Complete and extensive level scheme of 63 nuclei have been used
to calculate this parameter. For some nuclei the graphs of spin distribution
are also plotted. We have calculated this parameter also by Gilbert and
Cameron formula, its modified version by moghab gab and Dunford, rigid
body formula, and finally plot all of them versus A for comparison
purposes. Moments of inertia for these nuclei have been calculated and
plotted.
NSS2-2
CALCULATION OF THE 0+1+ ALLOWED GAMOW TELLER 
TRANSITION LOG(FT) VALUES IN SOME SPHERICAL NUCLEI
USING PYATOV – SALAMOV METHOD
D. I. Salamov1, S. Ünlü1, T. BABACAN2, A. KÜÇÜKBURSA3
1
Department of Physics , Anadolu University , Eskişehir-Turkey
2
Department of Physics , Celal Bayar University , Manisa-Turkey
3
Department of Physics , Dumlupınar University , Kütahya-Turkey
The present study investigates the log(ft) values of the allowed 
decay between even A mass spherical nuclei in the region of 114A132.
Calculations have been performed within the framework of a proton neutron
quasiparticle random phase approximation(pnQRPA), including the residual
spin isospin interaction between nucleons. The effective interaction constant
is found by Pyatov-Salamov method. The use of this method makes our
formalism free of the Gamow Teller interaction strength parameter. The
comparison of our calculation results with the results of the schematic spin
isospin residual interaction model (GT=()() ) and the corresponding
experimental values [1] is presented in the following tables.
Table 1
A
GT=15/A
GT=5.2/A0.7
our results
EXP.
NSS2-3
THE STUDY OF THE PROPERTIES OF THE GTR STATES IN
112-124
Sb ISOTOPES
T. Babacan2, D. I. Salamov1,A. KÜÇÜkbursa3, S.ÜnlÜ1
1
Department of Physics, Anadolu University, Eskisehir, Turkey
2
Celal Bayar University, Department of Physics, Manisa, Turkey
3
Dumlupınar University, Department of Physics, Kutahya, Turkey
In this study, based on Pyatov - Selamov method, the properties of
the GTR states in 112-124Sb isotopes have been searched. The condition
that the central part of the nuclear Hamiltonian commutes with the GT
operator has provided spin isospin effective interaction parameter to be
found in such a way that it is related to the average field.
InSn[-]
114
3.42
3.36
4.75
4.47
116
3.62
3.56
4.92
4.66
118
3.77
3.72
5.07
4.79
120
3.88
3.82
5.17
5.00
122
3.95
3.90
5.23
5.11
15
10
5
SbSn[ ε ]
118
4.38
4.60
120
4.23
4.45
112
4.69
4.55
Table 2
Transitions
P-S
GT=15./A
GT=5.2/A0.7
128
128
4.42
4.42
6.88
In Xe( )
128
4.47
4.77
4.87
Cs128Xe(+)
130
130
4.61
4.61
6.79
In Xe( )
130
4.31
4.56
5.37
Cs130Xe(+)
132
3.89
4.16
4.82
Te132I(-)
1. S.S.M. Wong, J.K.Tuli , Nuclear Data Sheets 84, 427 (1998)
114
116
118
120
122
124
4.53
4.53
EXP.
6.09
4.84
----5.10
4.69
Calculations have been performed within the framework of a
proton neutron quasiparticle random phase approximation(pnQRPA). The
comparison of our results for The GT resonance energies(solid line) with
those of Ref.[1] (dotted line) and the corresponding experimental values[2]
have been shown in the following figure
V.A. Rodin and M.H. Urin, arXiv nucl.th / 0201065 V1 , 2002
K. Pham et al, Phys Rev.C 51 (1995) 526
NSS2-4
ISOMERS IN THE NEUTRON RICH A=180-200 MASS REGION.
S. Chikaoui etal,
Algeria
The abstract is not available
b
Dept. of Mechanical Engineering, Sharif Univ. of Tech., Tehran, Iran
Faculty of Science, Shahid Beheshti Univ., Tehran, Iran
*nvosoughi@gmail.com , nvosoughi@yahoo.com
The Discrete Method (DM) produces the final finite form of the
neutron diffusion equation, without writing the conventional differential
form of the neutron diffusion equation and using the customary
mathematical tools to discrete it. We plan to show this method with linear
interpolation is on equivalence with the Control Volume Finite Element
Method (CVFEM). A review on discrete physics and its application to
generate the final discrete form of neutron diffusion equation with linear
interpolation is illustrated first. Then we show how to apply CVFEM to the
differential form of neutron diffusion equation to compare the results with
ones derived with DM.
c
NSS2-5
MICROSCOPIC DESCRIPTION OF MIXED-SYMMETRY STATES
IN NEARLY SPHERICAL NUCLEI.
Ch. Stoyanov,
Institute for Nuclear Research and Nuclear Energy, 1784 Sofia, Bulgaria
The quasiparticle-phonon model is adopted to investigate the
phonon content and the proton-neutron symmetry of low-lying states
recently discovered in nuclei around shell closure. The results are in overall
agreement with experiments and consistent with the interacting boson
model.
NSS2-6
FORM FACTORS AND RADII OF LIGHTER NUCLEI
Fazal-e-Aleem and Alam Saeed
CHEP, University of the punjab, Lahore-54590, Pakistan
Knowledge of form factors play an important role in the
understanding physics of hadrons and nuclei, in particular lighter nuclei. In
this talk we will undertake a brief and comprehensive look on the role of
form factors in the study of radii of hadronic and lighter nuclei.
Tuesday, 22 Nov. 2005
Session NRP2
NRP2-1
ON EQUIVALENCE OF DISCRETE METHOD (DM) WITH
LINEAR INTERPOLATION AND CONTROL VOLUME FINITE
ELEMENT METHOD (CVFEM) FOR NEUTRON DIFFUSION
EQUATION.
Naser Vosoughia, b,*, Ali A. Salehib, Majid Shahriaric
a
National Nuclear Safety Dept., Atomic Energy Organization of Iran,
Tehran, Iran
NRP2-2
WELL KNOWN AND NEW NEUTRON FILTER AND
EMPLOYMENT OF THEM FOR FUNDAMENTAL AND APPLIED
INVESTIGATIONS
O. Gritzay, V. Koloty, V. Libman, O. Kalchenko, N. Klimova
Institute for Nuclear Research, Prospekt Nauky, 47, Kyiv, Ukraine, 03680
This is a short review of the neutron filtered beam technique
developed in Neutron Physics Department (NPD) of the Institute for
Nuclear Research at Kyiv Research Reactor (KRR) by now. Ways of
searching of new neutron filters and improving of known neutron filters are
described. Through expensiveness of high enriched isotopes, the natural
elements or enriched isotopes available in the NPD were considered as
components of the new or improved filters. A short information about
characteristics of the existing filters are presented.
The KRR is a tank-type reactor with beryllium reflector and light
water both as moderator and coolant. The core is an assembly of fuel rods,
which are 36% enriched with uranium-235. The nominal power is 10 MW.
Neutron flux in the core is about 1014 n/cm2s. The KRR has ten horizontal
tubes, which are used for nuclear physics investigations, solid state and
material structure study and applied works. Now three of these ten
horizontal tubes are employed in experimental investigations with using of
the neutron filtered beam technique. The current neutron filters allow to
have a set of more than ten neutron lines in the energy range from thermal
energy to several hundred kilo-electron-volts, intensity of such lines may
reach to 106 – 108 n/cm2s, and this is much more than any other method
(time of flight and others) can ensure. The neutron energy range which can
be covered by means of neutron filters is very interesting for advance in
understanding of mechanism of neutron interactions with nuclei and for
development of nuclear models, and it is very important for engineering
calculations, but through absence of high intensity neutron sources in this
energy region an accuracy of the available experimental data for a majority
nuclide is very low, for some of them the experimental data in this energy
region is absent at all. High intensity of neutron beam and experimental
methods developed in the NPD made possible to carry out measurements
with high accuracy, for example, for total neutron cross section with
accuracy better of than 1%. Some of these methods and of obtained results
are described in this paper.
Short analysis of filter use abilities for Applications (BNCT,
PGGA, etc.) is also presented in this review paper.
This review may be useful for users who wish to use the filtered beams at
Kyiv Research Reactor or to develop neutron filtered beam technique at
their installations.
NRP2-3
CALCULATIONS OF NEUTRON SOURCE AT THE KYIV
RESEARCH REACTOR FOR THE BORON NEUTRON CAPTURE
THERAPY AIMS
O. Gritzay, O. Kalchenko, N. Klimova, V. Razbudey, A. Sanzhur
Institute for Nuclear Research, Prospekt Nauky, 47, Kyiv, Ukraine, 03680
Today neutron capture therapy (NCT) is a promising form of
radiation therapy. It includes two interconnected features - the infusion or
delivery of a capture compound, which preferentially concentrates in the
tumor, followed by the irradiation of the tumor site with neutrons. As the
isotope B-10 is often used as the neutron capture agent in the compound,
NCT is called boron neutron capture therapy (BNCT). The most suitable
neutrons for BNCT are neutrons with energy in region from 1 eV to 10 keV.
Such epithermal neutron beams may be formed at nuclear research reactors.
The concept of the source consists in transformation of the reactor radiation
into epithermal radiation. Modifications of research reactors may be
relatively straightforward and not prohibitive cost, especially in comparison
with construction of new reactors specialized for BNCT. But any reactor
modification should be forestalled the careful calculations which are taking
into account all peculiarities of the specific reactor system.
Calculation results of an epithermal neutron source which can be
created at the Kyiv Research Reactor (KRR) by means of placing of
specially selected moderators, filters, collimators, and shielding onto the 10th horizontal experimental tube (so-called thermal column) are presented.
The main goal of these calculations was: 1) to analyze the influence of
material composition and spatial configuration of moderators, filters,
collimators and shielding on the characteristics of the neutron beam; 2) to
analyze the influence of transformation of the reactor thermal column into
an epithermal one on level of reactor safety; 3) to analyze an opportunity of
development at the KRR of an epithermal neutron source having parameters
satisfactory for BNCT aims.
The general Monte-Carlo radiation transport code MCNP4C, the
Oak Ridge isotope generation code ORIGEN2 and the NJOY99 nuclear
data processing system have been used for these calculations.
NRP2-4
NEUTRON-OPTICAL EFFECTS AT VERY COLD NEUTRONS
SCATTERING ON THE SPHERICAL PARTICLES OF DIFFERENT
SIZES.
S. P. Kuznetsov1, A. I. Udovenko1, A. V. Shelagin2, V. G. Grinev3,
O. I. Kudinova3, L. A. Novokshonova3
1
Lebedev Physical Institute, Moscow, Russian Federation
2
Moscow Physics Technical Institute, Moscow, Russian Federation
3
Semenov Chemical Physics Institute, Moscow, Russian Federation
Very cold neutrons (VCN) with the wavelength λ > 4.0 nm are
convenient tool for investigating the supermolecular structures of different
nature. Using a Born approximation (BA) to the analysis of dependencies on
the wavelength of the VCN scattering cross sections, it is possible to obtain
information about average sizes (R) and concentrations of the scattering
particles with R~λ. However, with an increasing the sizes of scatterers the
conditions for BA applicability can be disrupted. In this work we
investigated the possibilities of BA, eikonal and geometric-optical
approximations for the analysis of VCN scattering on the spherical particles
with R  λ. The measurements of the cross sections -dependencies were
carried out on VCN spectrometer of the Lebedev Physical Institute in the
wavelength range 40nm  4nm.
As a samples were used the films of composite materials
aluminum/polyethylene obtained by the polymerization filling method. The
filler particles sizes were from 100nm to 10000 nm. The samples of borated
polyethylene obtained by the same method were also investigated by the
VCN transmission. The analysis of VCN interaction cross sections made it
possible to determine the mean radius of the strongly absorbing particles of
boron distributed in the polyethylene matrix. VCN scattering on the nanoparticles of aluminum and iron oxide in the glycerin were also investigated.
NRP2-5
ANALYTICAL
ESTIMATING
SPECIFIC
MASSES
OF
ACTIVATION PRODUCTS IN THERMAL REACTOR CORE
N. Antovic, E. A. Rudak1, A. Ya. Tulubsov1
Dept. of Phys., Univ. of Montenegro, Podgorica, Serbia and Montenegro
1
Inst. of Phys. of the Belarusian National Academy of Sc., Minsk, Belarus
Time dependences of specific masses of neutron activation
products are approximated by the simple analytical functions in this work.
The simple formula for calculating specific masses of activation products in
a thermal reactor core, which can be used for approximating results of
numerical calculations with accuracy of the order of a few percent, has been
shown. As examples, the accumulated masses of 239Np and plutonium
isotopes in the core of both the reactor WWER-1000 and the accident
RBMK-1000 reactor of the Chernobyl nuclear power plant, were calculated
for several different times of reactors work. For RBMK-1000, the
determination of the other transuranium isotopes on the base of 239Np
specific masses is also carried out. A good agreement with the results of
numerical calculations has been obtained.
NRP2-6
SIMULATION OF FUEL ELEMENTS BURNUP POWER AND
FLUX DISTRIBUTIONS IN TRIGA MARK II NUCLEAR
RESEARCH REACTOR
S. Nehaoua, N. Amrani, A. Boucenna
Ferhat Abbas University, Science faculty,Department of physics
Nsamra6@yahoo.fr
Simulation is strongly emerged in physics , for safty and
radioprotection necessities it requries advanced models and numerics
methods, in particular the one which simulates phenomena in a nuclear
reactor , TRIGLAV is a code developed for TRIGA mark II reasearch
nuclear reactor calculations, it is based on four group and time independent
diffusion equation written in two dimontionel cylindrical geometry , it
includes two subroutines ; WIMS/D4 and TRIGA2D designed respectevely
to transport and diffusion calculations, these subroutines utilize multigroups
and finites differences methods, calculation is performed for 4 groups and 4
kinds of fuel ; ST8, ST12, FLIP and LEU, the two last ones are mixed with
naturel Erbium. The TRIGA core has cylindrical form with 8/9 rings and
graphite or water reflector
In our work, we calculate with TRIGLAV; power and flux
distributions, criticality, burnup of fuel elements accumulated during reactor
operation, these calculations are done for several pattern loading and for
several steps of burnup fuel elements an it let us to built an optimal pattern
loading with a ditermined operation history.
Session RQP2
RQP2-1
QUANTIZATION OF CHIRAL SCHWINGER MODEL BY USING
THE HAMILTON-JACOBI, BATALIN-FRADKIN-TYUITIN (BFT)
AND GAUGE UN-FIXING METHOD.
S.I. Muslih,
Palestine
The abstract is not available
RQP2-2
THEORETICAL MASS CHARGE OF ELECTRON
Kapil Chandra
India
The abstract is not available
RQP2-3
QUATERNION AND OCTONION FOR UNIFIED FIELDS
OF DYONS.
P.S. Bisht, Shalini Dangwal, and O. P. S. Negi
Department of Physics,Kumaun University, Almora Campus,
Almora – 263601,India
Starting with the generalized field equation of dyons and gravitodyons, we study the theory of quaternion and octonion variables to the SU
(2) non-Abelian gauge formalism. We demonstrate the resemblance of
quaternion and octonion covariant derivative with the gauge covariant
derivative of generalized fields of dyons. Expressing the generalized fourpotential, current and fields of gravito-dyons in terms of quaternion and split
octonion variables, the U (1) abelian and SU (2) non-Abelian gauge
structure of dyons and gravito-dyons are described. It is emphasized that in
general the generalized four-current is not conserved but only the
Noetherian four-current is considered to be conserved one. The present
formalism yields the theory of electric (gravitational) charge (mass) in the
absence of magnetic (Heavisidian) charge (mass) on dyons (gravito-dyons)
or vice versa.
RQP2-4
ROLE
OF
QUATERNIONS
SUPERSYMMETRY.
O.P.S. Negi,
India
The abstract is not available
AND
OCTONIONS
RQP2-5
ROTATING BLACK HOLE STRING CORRECTED ENTROPY.
A. Bouchreb,
Algeria
The abstract is not available
RQP2-6
IN
PRODUCTION AND DECAY OF NEW GAUGE BOSONS IN 3-3-1
MODELS
Hoang Ngoc Long1, Dang Van Soa2, Dinh Phan Khoi1,3
1
Inst. of Phys. and Electronics, Cong Vi, Ba Dinh, Hanoi, Vietnam
2
Hanoi University of Education, 136 Xuan Thuy, Cau Giay, Hanoi, Vietnam
3
Vinh University, 182 Le Duan, Vinh City, Nghe An Province, Vietnam
First, a brieft introduction to the minimal 3-3-1 model and the 3-31 model with right-handed neutrinos is given. The renomalization of the two
models and self-interaction between new gauge boson in these models are
introduced.
Next, the production of bileptons X, Y and new gauge boson Z’ on
e – gamma and e – e collisions in the two models is considered. The results
shows that new gauge bosons can be observed at moderately high energies.
Finally, bilepton decay in the two models is investigated. It shows that the
existence of bileptons can be deduced only from their decay products.
Session IKN2
IKN2-1
SUPERSCALING IN INCLUSIVE SCATTERING OF ELECTRONS
AND NUCLEON MOMENTUM DISTRIBUTIONS IN NUCLEI.
A.N. Antonov etal,
Bulgaria
The abstract is not available
IKN2-2
QUASILOCAL QUARK MODELS AS EFFECTIVE THEORY OF
NON-PERTURBATIVE QCD
A. A. Andrianova,b and V. A. Andrianova, V. A. Focka
a
Depatment of Theoretical Physics, Sankt-Petersburg State University,
198504 Sankt-Petersburg, Russia.
b
Istituto Nazionale di Fisica Nucleare Sezione di Bologna, 40126 Bologna,
Italia
The Quasilocal Quark Models (QQM) including scalar(S),
pseudoscalar(P), vector(V) and axial-vector(A) four-fermion interaction
with selfinteractions including derivatives of fields are elaborated in the
strong coupling regime when several coupling constants are matched to their
critical values. The QQM are investigated as effective theory of nonperturbative QCD (npQCD) at low and intermediate energies. When the
npQCD effective action is built at the Chiral Symmetry Breaking (CSB)
scale by means of improved perturbation theory it has the structure of a
Generalized Nambu-Jona-Lasinio (NJL) model with the Dynamical CSB
(DCSB) due to attractive forces in the scalar channel. The DCSB at low
energies and the Chiral Symmetry Restoration (CSR) at high energies are
employed to describe the hadronization of npQCD in the quark sectorQQM. The matching to non-perturbative QCD based on the CSR (via the
Operator Product Expantion (OPE)) at high energies enhances the
predictability of such models for the VASP-mass spectrum. The QQM in
strong coupling regime, describes a wide set of mesons states (ground ones
and their radial excitations). The matching QQM to high-energy
perturbative QCD (pQCD) is realized at CSB scale by means of CSR Sum
Rules for these mesons. The number of spectral characteristics for ground
and excited meson states at intermediate energies are calculated and
compared with existing Particle Data. The QQM may be thought of as more
realistic models for the investigation of behavior of hadron matter at high
temperature and nuclear densities in the region near the CSR and
deconfinement.
[1] A. A. Andrianov and V. A. Andrianov, Theor. Math. Phys. V. 93 (1992),
1126; Int. J. Mod. Phys. A8, No.11, (1993), 1981.
[2] A. A. Andrianov, V. A. Andrianov and V. L. Yudichev, Theor. Math.
Phys. V. 108, (1996), 1069;
[3] A. A. Andrianov and V. A. Andrianov, Proc. of the Int. Workshop on
Hadron Physics, Coimbra 1999, ed. by A. H. Blin et. al., N.Y., AIP, (2000)
328; hep-ph/9911383.
[4] A. A. Andrianov, V. A. Andrianov and S. S. Afonin, hep-ph/0101245,
hep-ph/0209260.
[5] V. A. Andrianov and S. S. Afonin, Phys. Atom. Nucl. V. 65 (2002),
1862;
[6] V. A. Andrianov and S. S. Afonin, Eur. Phys. J. A17, (2003), 111;
Keywords: Quasilocal Quark Models; Non-perturbative QCD; Chiral
Symmetry Restoration Sum Rules; Mass spectra for scalar, pseudo-scalar,
vector and axial-vector mesons.
IKN2-3
RECENT APPLICATIONS OF NUCLEAR METHODS IN SCIENCE,
EDUCATION AND TECHNOLOGY
J. Csikai and R. Dóczi
Inst. of Exp. Phys., Debrecen Univ., 4010 Debrecen-10, Pf. 105, Hungary
Institute of Nuclear Research of the Hungarian Academy of Sciences, 4001
Debrecen, Pf. 51, Hungary
A survey is given in this paper on those applications of wideranging nuclear methods which are related to the recent studies carried out
also in Debrecen, Hungary. Among these the following topics are selected:
a) Nuclear safeguards, illicit trafficking and demining; b) Bulk hydrogen
analysis; c) Radiopharmaceuticals and related charged particle reactions; d)
Accelerator transmutation of radioactive waste; e) Validation of nuclear data
libraries by the measurements and calculations of differential and integral
data; f) Analysis of nuclear data needs. In addition to these very seasonable
subjects some others like environmental studies, materials modification,
energy problems, radiation education are discussed with an emphasis on the
possible participations of countries having limited facilities and manpower
for such investigations.
IKN2-4
RADIATION INDUCED CHANGES OF OPTICAL, ELECTRICAL,
AND MECHANICAL PROPERTIES OF GLASSES, DIELECTRICS
AND SEMICONDUCTORS.
M.A. Adawi,
Experimental Nuclear Physics Department, NRC, AEA, Cairo, Egypt
This work is concerned with investigating the influence of ionizing
radiation on different materials, concretely, the change of their physical
characteristics such as, the electrical resistivity, the optical density, the
thermoluminescence spectra, the microhardness etc. The investigated
materials are: polyethylene, glasses containing U3O8, Na2O and K2O,
polyvinyl
alcohol
containing
Ni2SO4,
CoCl2,
CuSO4
and
(CH3COO)2CuH2O, polymer Pb2O3/composite, germanium sulphur alloy,
synthetic and natural diamond, nickel chromium steel and silicon.
Irradiation is carried out in neutron fields of 10 5-1014 neutron/cm2, gamma
radiation in the dose range 102-106 Gy and swift heavy ions of energy 1
Mev/amu. The possibility of working out dosimetric devices (using the
above mentioned materials) possessing accurate and well expressed metrical
characteristics for detecting different sorts of radiation is investigated. The
optimum conditions of using these dosimeters (under different
thermodynamic conditions and absolute values of registered radiation) are
determined. The process of defect formation and evolution in silicon single
crystal and diamond irradiated with swift heavy ions is studied. The
influence of high-energy heavy ions on the surface structure of nickel
chromium steel is investigated. The formation of thermally stable
conducting layers at the far depth of the boron projective range in silicon
irradiated with swift boron ions is confirmed. Irradiation of nickel chromium
steel with xenon ions lead to the change of the elemental composition of the
irradiated surface. For the case of diamond semiconductor single crystal
irradiated with high-energy xenon or krypton ions possessing energy
1Mev/nucleon, the track formation is observed for the first time. The track
formation criteria are established. A model characterizing the interaction of
high-energy heavy ions with diamond is introduced. Such model is found to
be applied for nickel chromium steel too.
Session AR2
AR2-1
CRYOSORPTION PUMPING FOR LHC LSS VACUUM CHAMBER.
V. V. Anashin, R. V. Dostovalov, A.A. Krasnov.
Budker Institute of Nuclear Physics, Novosibirsk, Russia
R.V.Dostovalov@inp.nsk.su
The vacuum chamber inside some cryogenic elements in the LHC
long straight sections will have cold bore (CB) at 4.5K and a beam screen
(BS) at temperature between 5 and 20K. The gas molecules desorbed due to
photons and electrons will pass through the slots on the BS to the shadowed
part between the CB and BS. All desorbed gases except H2 could be
adsorbed on the CB and BS but a cryosorber is required to pump H2. The
new types of anodized aluminum, porous copper and charcoal-based
materials were developed and studied to cryopump H2 at temperatures
between 10 and 20K. The advantages and disadvantages of cryosorbers and
technological problems of development of new similar cryosorbers were
defined. The vacuum parameters of LHC vacuum chamber prototypes with
charcoal and two types of carbon fiber cryosorbers were measured. The
dynamic pressure behavior at BS temperature oscillations was studied for
BS with woven carbon fiber to predict the dynamic pressure at nonstandard
or transient regimes of the LHC operation. A main result is that woven
carbon fiber cryosorber meets the LHC requirements and can be proposed
as cryosorber for LHC. The summary results of these studies are presented.
AR2-2
HYBRID THEORY SYSTEMS, DESCRIPTION OF THE ADS ACCELERATOR DRIVEN SYSTEM- FOR DIFFRENT PROGRAMS
ANS STUDY OF THEIRE PERFORMANCES
Toumi Sihem
Cité des 48 logs Bt D , N° 8, Bizard, Setif, Algeria.
sihem.toumi@caramail.com , sihemtoumi@yahoo.fr
The whole world crosses a very complicated problem: produce the
energy in order to maintain the economical wheel without affecting the
nature equilibrum. Unfortunetly, if the world gives off the weapons in the
same level of the west contries, the planet will be in serious troubl.
For these reasons, they are obliged to develop a new resources of
energy in order to reduce these dangers. The concept of the amplified
energy (EA) developed by C.Rubbia and his team permits to give another
sense of the use of the nuclear energy among the public. Performing this
system means open a new window to the nuclear physics and theire
applications.
My work will be devoted to the study of the performance of the
hybrid systems ADS -Accelerator Driven System- where the EA reperesents
a kind of those systems, programs have been proposed by the major science
centers in the world : 1) JAERI, 2) CERN (AE), 3) USSR, 4) BNL
(Phoenix), 5) LOS ALAMOS. The theory of the hybrid systems (ADS) like
the particle accelerator physics, spallation source and the blanket of the
appratus, is studied in this work. I descibe too the ADS for each program
developed by the precedent centers.
My analysis is concentrated to an important point, it is the study of
the performances of those systems. The analysis reposes on tow axes:
- study on the blanket region, traget, window, ...etc.
- study on the accerelator particles region.
The first part consists of studying the behavior of the constituant
elements of the blanket, the target, the window,... as a function of the
parameters which govern the ADS ensemble and permits us to get a
performad system: the temperature T and the energy E by calculating their
cross sections using the software PREPRO 2000 and the ENDFB6 library
and to get finally conditions with the best yield of these elements. The
secand part will be spicified to another level more miniature, it is the
internal structure of the regions which control the accelerator's particles like
the circuit that permits us to diffuse the beam on the hole target region,
which makes necessery its simulation with the software SPICE developed by
the Micro Sim firm corporation to determine the operator's mode conditions.
AR2-3
PARTITIONING AND TRANSMUTATION OF TECHNETIUM-99
IN FISSION REACTORS AND HYBRIDS SYSTEM
N. Amrani, S. Nehaoua and A. Boucenna
DAC Laboratory, Physics department, Faculty of sciences, UFAS
University, Algeria
*E-mail: naima2073@yahoo.fr
Partitioning and transmutation of radioactive and long lived
component from the highly radioactive waste stream in order to reduce or
probably eliminate their radiotoxic inventory was the important option for
the nuclear waste management. The important fission products that deserve
most attention is the technetium. Technetium is present as a single isotopic
species (99Tc) can be transmuted by single neutron capture into the stable
noble metal ruthenium (100Ru). The technetium separation from spent fuel is
possible with PUREX process. An, other chemical process was developed to
separate a priory technetium with uranium is the UREX process. The
transmutation of 99Tc in thermal reactor such as LWRs will be difficult
because of the long transmutation half-lives and the large inventory
required. Better result can be obtained in fast reactors, or in accelerator
driven height flux reactor.
AR2-4
ASYMPTOTIC BEHAVIOR OF AVERAGE PROFILES OF
ELECTROMAGNETIC CASCADES PRODUCED BY HIGH
ENERGY GAMMA QUANTA IN DENSE AMORPHOUS
MATERIALS.
Bronisław Słowiński1,2 and Przemysław Duda1
1
Physics Faculty, Warsaw University of Technology, Poland
Institute of Atomic Energy, Poland
duda@if.pw.edu.pl, slowb@if.pw.edu.pl
The careful analysis of both experimental data and results of
modeling of electromagnetic cascades (EMC) produced by high-energy
gamma quanta in dense amorphous media shows that the commonly
accepted till now approximation of the average EMC longitudinal profile
(ALP) in the form (for example, [1])
2
(dE / dt ) ion ~ F ( x)  a1 x a2 exp( a3 x)
(1)
ceases to be valid at large enough depths t, where more then 0.9 of the total
cascade energy Eγ had been released. Here x=t/<t(Eγ)> is the cascade depth t
scaled with the average depth <t(Eγ)> depending on Eγ and ai are free
parameters to be estimated by fitting (1) to experimental or modeled data.
Moreover, it turned out that the slope parameter a3 depends on Eγ as is
demonstrated in the figure for the case of EMC initiated in liquid xenon.
Of special interest is also the scaling propriety of ALP with energy
Eγ, which shows to be broken at large t.
A similar situation takes place with regard to the average lateral
profile (APP) of EMC.
In the work we investigate, mainly by using the EGS4 Code System
[2], both the ALP and APP of EMC initiated by gamma quanta of several
hundred MeV up to several GeV energy in selected and popular materials,
in particular, in liquid xenon and PWO. Our attention is focused on
asymptotic behavior of these characteristics. The dependence of parameters
ai and adequate parameters of APP on the primary energy Eγ, cut-off energy
and material characteristics is also investigated.
Energy dependence of the slope parameter a3 of the longitudinal profile (1)
of EMC produced by gamma quanta in liquid xenon.
1. B.Słowiński. Phys.Part.Nucl. 25(2), March-April 1994, pp. 173-209.
2.
http://www.slac.stanford.edu/egs/;W.R.Nelson,
H.Hirayama
and
D.W.O.Rogers. The EGS4 Code System. SLAC-265 (1985).
AR2-5
CUORICINO STATUS AND CUORE PROSPECT.
S. Sangiorgio on behalf of the CUORE collaboration,
Universita' degli Studi dell'Insubria - Como-Italy and INFN Milano - Italy
The interest of the scientific community on Neutrinoless Double
Beta Decay (0ν-DBD) has grown during the last years after the results on
neutrino oscillations. Infact 0ν-DBD is a unique probe for the neutrino
nature and it could also fix the neutrino absolute mass scale which is still
unknown due to the fact that oscillation experiments provide only
differences between squared neutrino masses. As a very rare decay process,
the search for 0ν-DBD is very challenging also from an experimental point
of view.
CUORE (Cryogenic Underground Observatory for Rare Events) is
intended to investigate low probability events like 0ν-DBD, operating a
large array of bolometers in the Gran Sasso Underground Laboratory
(LNGS) (Italy). In particular, CUORE will be a 1-ton experiment made with
988 TeO2 bolometers that will search for 0ν-DBD of Te-130. It also aims at
reaching a sensitivity on the effective neutrino mass of the order of few tens
of MeV.
CUORICINO is a single CUORE tower running since 2003 in
LNGS. It consists of an array of 62 crystals of TeO2 operating as
bolometers in a deep underground dilution unit at a temperature of about 10
mK. Due to a total mass of about 41 kg, CUORICINO represents by far the
most massive running cryogenic mass to search for rare events.
CUORICINO plays an important role as a standing alone
experiment and as a prototype for developing the future CUORE setup.
Present results already achieved and studies that are underway will
be presented and discussed.
AR2-6
TEMPERATURE DEPENDENCE OF THE FREE VOLUME HOLES
IN POLYHYDROXYBUTYRATE BIOPOLYMER: A POSITRON
LIFETIME STUDY.
E. E. Abdel-Hady, Hamdy F. M. Mohamed, and Somia S. Fareed
Phys. Dept., Faculty of Science, El-Minia Univ., El-Minia, Egypt
esamhady@link.net & hamdyfm@link.net
The size of the free volume holes and its distributuion in
polyhydroxybutyrate (PHB) biopolymer have been studied using positron
annihilation lifetime technique. The measurements were performed as
function of the temperature from - 30 to 90 oC. The temperature dependence
of the free volume hole shows a glass transition temperature, T g at 5 oC. The
free volume behaviour of PHB shows a small linear increase with
temperature below Tg and a steeper increase above Tg. The thermal
expansion coefficients of the free volume hole were determined to be
4.94x10-3 and 13.8x10-3 /oC below and above Tg, respectively. The free
volume hole distribution in PHB shows a narrow distribution below T g.
With increasing temperature, the maximum of the distributions of the free
volume holes shift to higher values. Meanwhile, wedening of the
distribution occurs smaller in lower temperature ranges and pronounced at
higher temperatures, especially well above T g. The results will be presented
and discussed.
Session DI2
DI2-1
A SIMPLE METHOD FOR X-RAY MONOCHROMATING.
Salimeh Kimiagar,
PhD Student, Iran
For finding the monochromatic and focused X ray (that are useful
for PIXE and XRF techniques), we use Bragg diffraction to spiliting K α and
K β lines that comes from Ti source in scattering from different targets. By
simulating of this process we find the appropriate angle of incident beam
and effective cross section and geometrical shape of samples. Our results
shows that the NaCl and Cu crystals are good targets, specially for best
focusing in semi spherical geometry. We setup an experimental
K
100 
configuration with Ti source  α 
 and plate NaCl and Cu targets. We
K
13 
 β
find that the ratio of K α to K β in scattering from Cu(NaCl) samples varies
from 0.13(0.015) to 230(2680) for angels between 27.5(12.5) to 47.5(30)
degree. These values are agree well our simulation results and confirm that
diffraction intensity of K α and K β varies with scattering angle and will be
useful for produce the monochromatic X ray.
DI2-2
A RESISTIVE PLATE CHAMBER MUON DETECTOR FOR THE
CMS EXPERIMENT AT LHC.
Paolo Vitulo on behalf of the CMS/RPC collaboration.
University of Pavia & INFN Pavia
The Compact Muon Solenoid (CMS) experiment at the Large
Hadron Collider at CERN will use as a system for muon detection Resistive
Plate Chambers (RPCs).
RPCs will be a relevant part of the dedicated muon trigger system.
In particular the CMS barrel region will be equipped with 480 double gap
RPCs operated in avalanche mode using a Freon based gas mixture. A great
effort is being done to customize a detector able to satisfy the stringent
requirements needed to operate in a hostile background environment during
the normal operation. Excellent muon efficiency, high rate capability, good
time resolution, low cluster size and low neutron and gamma sensitivity will
characterise the system. Such qualities have been carefully evaluated during
the detector design and measured during the succeeding successful R&D
program. As the mass production started an intensive commitment period
for monitoring the quality of the RPCs has followed and has involved
researchers from Bari, Napoli, Pavia and Sofia Institutes.
Production and assembling of the detectors was managed in Bari,
Napoli, Sofia and at General Tecnica factory; cosmic rays tests in Pavia,
Bari and Sofia assured the chambers final quality certification. Further tests
at CERN ISR completed the process before the final installation on the
experimental site.
In this talk the detector performance will be analyzed in detail; the
quality control procedures of the main RPC components will be reviewed as
well as the cosmic test results for the mass production accomplished so far.
Problems encountered and the adopted strategies for their solutions
will be also discussed
DI2-3
canceled
DI2-4
CONTRIBUTION TO THE OPTIMISATION OF THE SMALL
ANGLES NEUTRON SCATTERING SPECTROMETER (SANS)
INSTALLED AT THE NUR RESEARCH REACTOR.
N. Ounoughi, B. Meftah, T. Zidi, A Boucenna
1. Département de physique faculté des sciences UFAS.
2. Centre de recherche nucléaire de Draria Alger Algeria
This works is a contribution toward the optimisation of the Small
Angles Neutron Scattering Spectrometer (SANS) installed at the NUR
research reactor. It consists in the determination of the total and scattering
neutron cross section for polycrystalline Bismuth in the energy range 020MeV and at 77° K .The basic nuclear data of bismuth were taken from
ENDF-VI. However, because the distributed ENDF-VI do not contain
thermal scattering laws data for Bismuth, a special calculation based on the
LEAPR and THERMR of the NJOY code was performed in order to
determine effective thermal scattering cross section . Crystallographic and
dynamics and experimental parameters of polycrystalline Bismuth were used
in such calculation.
The results showed a strong effect of crystalline bonds on the effective cross
section of Bismuth at low energy and low temperature.
The computed Bismuth effective cross section, will allow the neutron
physicists to undertake the specific calculation required in the optimization
studies of Bismuth neutron filters in general and of the Bismuth- Beryllium
neutron filter of the SANS spectrometer at the NUR reactor in particulars.
DI2-5
PHOTOEMULSION METHOD OF STUDY OF NEUTRON HALO
USING NEUTRON TRANSFER REACTION.
G. Belovitsky1, E. Konobeevski1, A. Stepanov1, V. Zavarzina1, S.
Zuyev1, N. Polukhina2, N. Starkov2, A. Aleksandrov2, S. Lukyanov3,
and Yu. Sobolev3
1
Institute for Nuclear Research, Moscow, Russia; 2 P.N.Lebedev Physical
Institute, Moscow, Russia; 3 Joint Institute for Nuclear Research,
Dubna,Russia
One of the brightest results of application of radioactive nuclear
beams was a discovery of exotic structure for light neutron-rich nuclei neutron halo. The first nuclei with such exotic structure, existence of which
was established experimentally, were 11Li and 6He. The problem of more
detail study of such neutron halo structure and, in particular, of correlations
of valence neutrons, has not been experimentally solved till now.
To estimate the probability of two-neutron configuration in halo
nuclei, we propose an experimental method of studying neutron-neutron
correlations at periphery of such nuclei by measuring two-neutron transfer
reaction. The experimental study of 6He+A4He+B reaction for various
targets is performed using radioactive nuclear beams of Flerov Laboratory
of Nuclear Reactions (JINR, Dubna) at energy of about 15 MeV/u. The
theoretical analysis shows that simultaneous registration of recoil nucleus B
and 4He(9Li)-nucleus allows one to obtain information on relative
momentum distribution of two halo neutrons in the region of small values of
this variable.
Secondary particles 4He(9Li) and B-nuclei are detected by the
technique of nuclear photoemulsions. Thus, the nuclei of photoemulsion
(1H, 12С, 14N, 79,81Br, 107,109Ag) are used as target nuclei. One of the
important problems is a separation of the events caused by two-neutron
transfer from those of one-neutron transfer. The simulation performed has
shown that these reactions can be separated by the difference in their
kinematics (different Q-values, presence of neutron in the case of oneneutron transfer) studying the energy and angular dependencies of emission
of secondary 4He(9Li) nuclei.
Search of events of transfer reaction and further processing was
performed using automated measuring setup PAVIKOM at P.N. Lebedev
Physical Institute. In this setup the images of consecutive (with step of
several m) NPE layers using special camcorder and interface were
obtained and transferred to computer. At further processing of these images,
we select darkening areas (globes) with darkening degree, shape, and size
inherent for tracks of given charged particle (4,6He). Coordinates (x, y) of
centers of mass of all globes in each layer (z-coordinate) are determined and
stored. Then, particle trajectories Xi(z) and Yi(z) are determined by centerof-mass coordinates in consecutive layers of NPE.
Further the trajectories obtained are processed to determine their
parameters. The characteristic trajectory corresponding to the given reaction
must consist of: trajectory of primary particle ( 6He), bend of trajectory
corresponding to the interaction point, trajectory of secondary particle
emitting from interaction point (4He), and presence or absence of recoil
nucleus trajectory in the case of light (1H, 12С, 14N, 16O) or heavy (79,81Br,
107,109
Ag) target nucleus, respectively. Trajectories before and after
interaction are approximated by straight lines, but at the interaction point the
direction of trajectory (first derivative of trajectory) changes. Therefore, zcoordinate of this point is determined by the position of extremum in the
dependence of second derivative of trajectory on z
For trajectories having a bend, the program determines coordinates
(x,y,z) of the interaction point, angle of emission of secondary particle,
range (energy) of the primary particle at the interaction point, and range
(energy) of the secondary particle. Thus, all data necessary to obtain
angular distribution of the reaction studied are determined. First
experimental data on 6He+A4He+B reaction are obtained and processed.
DI2-6
STUDY OF THE METROLOGICAL CHARACTERISTICS OF THE
FBX DOSIMETER IN THE PHOTON BEAM USING A
SECONDARY STANDARD.
O. Moussous, K.Yahiche , M. Medjaje
Centre De Recherche Nucleaire D’Alger, Algèrie
ouiza_22@yahoo.fr
The metrological characteristics of the dosimetric system containing
0.20 mM ferrous ammonium sulphate, 5.0 mM benzoic acid and 0.20 mM
xylenol orange in 0.05 N sulphuric acid. (FBX dosimeter) was investigated.
The wavelength and absorbance linearity calibration of the
spectrophotometer were checked using NBS Standard Reference Material.
using carefully prepared standard solution. The G-value for the ferricxylenol orange complex when this dosimeter is exposed in air to gamma
radiation was determined using a secondary standard (ionization chamber).
The dosimrtric solutions could be stored for about 2 weeks before
irradiations and upto 2 days after irradiations without any significant error
in dose estimations..The linearity of the absorbed dose with the increases in
absorbance of the dosimeter solution has been checked.. For this purpose,
The dosimeter solutions were irradiated to a series of different absorbed
doses (3 to 11 Gy). The quality data, as judged from the correlation
coefficient, demonstrate that the curve is linear in the range investigated.
The stability and reproducibility of response are such that this
system should be used to measure the low doses. The reproducibility
allowed us to determine the lower detection limit of the FBX dosimeter,
which is around 5 Gy.
Keys words: FBX dosimeter, metrological, spectrophotometer.
Session NSR3
NSR3-1
SINGLE FOLDING ANALYSIS OF THE ELASTIC SCATTERING
OF P- 16O
E. H. Esmael and M. A. Allam
Physics Department, Faculty of Science, Cairo University, Giza ,Egypt
The elastic scattering of p- 16O data have been analyzed using
single – folding model. In the present calculations analytical expressions for
the real part of the optical potential are derived by folding NN amplitude to
different forms of the target nucleus. The theoretical calculations of the
differential cross sections as well as analyzing power gave a reasonable fit
to that of the experimental data.
NSR3-2
ANALYSIS OF THE NEW MEASUREMENT OF ELASTIC
SCATTERING OF O16+C12 USING DENSITY DEPENDENT
INTERACTION.
A. h. Gazal and E. H. Esmael
Physics Department, Faculty of Science, Cairo University
Glauber multiple scattering theory is applied to study the elastic
scattering of hadrons on C12 at different energies , on the basis of the alphaparticle model. The obtained results are compared with the experimental
data.
NSR3-3
ELASTIC SCATTERING OF HADRONS FROM 12C USING THE
ALPHA-PARTICLE MODEL
M. Y. M. Hassan and A. Sh. Ghazal
Phys. Dept., Faculty of Science, Cairo University, Giza, Egypt
The new measurement of refractive elastic scattering at different
energies have been analyzed using both density independent and dependent
double folding model. In the present calculations we have derived analytical
form of the real part of the optical potential by folding matter density for
both projectile and target nuclei with different forms of density dep.
Interactions. A reasonable fit wit the experimental data is obtained.
NSR3-4
FOLDING MODEL ANALYSIS OF 16O + 12C AND 16O + 16O
ELASTIC SCATTERING.
M. El-Azab Farid, and M. A. Zaki*
Physics Dept., Assiut University, Assuit 71516, Egypt.
*Physics Dept., Faculty of Science, South Valley University, Aswan, Egypt.
Optical model (OM) analysis has been performed on recently
measurements of 16O+12C and 16O+16O elastic scattering in the energy range
5-8 Mev/nucleon. The folding model real potentials are calculated based
upon the energy; and density; dependent JLM effective interaction. The
imaginary parts have been formulated in a Woods-Saxon form. Sixteen sets
of the observed elastic scattering cross sections are successfully described
using the obtained potentials. For the sake of comparison the folded
potentials are calculated using the density; and momentum; dependent SBM
effective interaction. The effect of introducing the dynamic polarization
potential on the results is also investigated.
NSR3-5
EXPERIMENTAL
STUDIES
AND
NUCLEAR
MODEL
CALCULATIONS OF PROTON INDUCED REACTIONS ON
NATURAL NICKELWITH ENERGIES BELOW 20 MeV
M. N. H. Comsan2, M. M. Al-Okr1 , G. Saber1, M. Challan2
1
Univ. Of Al Azhar, Faculty Of Science, Physics Department, Cairo, Egypt
2
Cyclotron Facility, Nuclear Research Centre, AEA, Cairo 13759, Egypt
Excitation functions of the reactions natNi (p, x) 55,57Co, 61Cu
were measured from their respective thresholds up to 20 MeV, with
particular emphasis on data for the production of the medically important
radionuclides, 55Co, 57Co and 61Cu. The conventional stacked-foil technique
was used. The samples were prepared by a Cutting of a large sheet process.
Irradiations were performed using MGC-20 cyclotron, (NRC) Nuclear
Research Centre, Egypt. In order to validate the data, nuclear model
calculations were performed using the code ALICE-IPPE which is based on
the preequilibrium-evaporation model. Good agreement was found between
the experimental and theoretical data. All the measured excitation curves
were compared with the data available in the literature. From the
experimental data the excitation functions of all the investigated
radionuclides were calculated and plotted.
NSR3-6
SOME PECULIARITIES IN THE FUSION AND FISSION
REACTIONS INDUCED BY WEAKLY BOUND NUCLEI.
A. A. Hassan1, S. M. Lukyanov2,Yu. E. Penionzhkevich2
1 Physics Department, Faculty of Science, Zagazig University, Egypt
2 Joint Institute for Nuclear Research (JINR) Dubna, Russia
Fission and evaporation Excitation functions were studied in a
broad range of energies below and above the Coulomb barrier in the
reactions 4,6He+209Bi,6He+206Pb,6He+197Au 6,7Li+209Bi, and 7Li+208Pb. The
experimental cross sections were measured using the beam-transport line of
the U400M accelerator at FLNR, JINR-Dubna. The experimental fusion and
fission excitation functions obtained for the different reactions were
analyzed using the PACE-4 and CC codes from the point of view of the
fusion reaction mechanism induced by weakly bound nuclei. The
comparison between the fission and fusion excitation functions for the three
reactions 4,6He+209Bi and 7Li+208Pb has shown that they are the same within
the experimental error for a broad range of energy. A significant increase in
the cross sections were observed below the Coulomb barrier for the fusion
reaction with the evaporation of two neutrons in the reactions 6He+206Pb and
6
He+197Au compared to statistical model calculations. The analysis of the
data in the framework of the statistical model for the decay of excited
nuclei, which took into account the sequential fusion of 6He has shown good
agreement between the experimental results and the calculations for the case
of sub-Coulomb-barrier fusion in the 206Pb + 6He reaction.
Session RMD2
RMD2-1
THE STUDY OF ACTIVITY OF THE RADON GASES FROM
BONE REMAINS WITH DETECTORS CR-39
A. Vasidov1, U. Mamadalieva1, А. Shaakhmedov2,
1
Institute of Nuclear Physics, Uzbekistan Academy of Sciences, Tashkent,
Uzbekistan
2
Geologycal museum of the State Committee on geology & mineral
resources of Republic Uzbekistan
samad@inp.uz
Radioactive elements and their contents in ancient bone remains
always interested paleontologists, archeologists, radiophysicists. With this
purpose were carried out an exposition of alpha particles of radon and
thoron by the detectors CR-39 from ancient bone remains (ABR) of
dinosaurs, bear and archantrop (ancient person, age dated about 1,5 mln.y)
found out in Uzbekistan. The samples of the ABR about 10 gram, before
exposed crushed in a powder and mixed. At registration of alpha particles
the plastic cup beforehand calibrated was used. Inside the plastic cup were
fixed two detectors CR-39 in such a way, that the first detector registered
alpha particles from Rn+Tn, the second detector for alpha particles from Rn.
In the results reading density of tracks in CR-39 detectors were counts high
activity 2300-5200 Bq/m3 for radon and 940-6000 Bq/m3 for thoron. Also
have been determined the activity of radon and thoron of the soil taken from
within and outside of a femoral joint of dinosaur.
RMD2-2
NATURALLY OCCURING RADIOACTIVE MATERIAL (NORM)
FROM ALUMINUM INDUSTRY A CASE STUDY: THE EGYPTIAN
ALUMINUM COMPANY, NAG HAMMADY, EGYPT.
Adel G. E. Abbady and A. M. EI-Arabi
Physics Dept., South Valley Univ., Faculty of Science, Qena, Egypt.
Abbady1965@yahoo.com, elarabi2l@yahoo.com.
The activity concentrations and gamma-absorbed dose rates of the
terrestrial naturally occurring radio nuclides 226Ka and 232Th were
determined in samples (raw material (Bauxite) by product (Alumina) and
tail which resulting from aluminum production) using high purity
germanium (HYGe) gamma ray spectroscopy. The bauxite used here was
imported by Egyptalum (The Egyptian Aluminum Company Nag Hammady,
Egypt) from Guinea and India. The bauxite activity ranges from 28.8  4.5
to 112.5  10.6 Bq kg-1 for 226Ra, and 151.6  12.3 to 525.6  2.9 Bqkg-1 for
232
Th with mean values of 61.9  7.7 and 378.4  19.1 Bqkg-1, respectively.
With respect to Aluminum and tail the mean values were 5.7  2.3, 8.5  2.9
for 226Ra and 7.2  2.6, 10.7  3.2 for 232Th Bqkg-1, 49K could not be
detected in all samples. The concentrations of these radionuclides are
compared with the available data from other countries. The measured
activity concentration of 226Ra and 232Th in Bauxites is higher and in
Alumina and tail are lower compared with world average. Radium
equivalent activities were calculated for the analyzed samples to assess the
radiation hazards arising due to the use of these samp1es in aluminum
industry and in the construction of dwellings.
Keywords: Activity concentrations, NORM, Aluminum industry, Bauxite,
Radiation hazards.
RMD2-3
NATURAL RADIOACTIVITY IN SOME SOIL AND PRODUCED
WATER SAMPLES FROM PETROLEUM FIELD IN WESTERN
DESERT, EGYPT.
A. M. El-Arabi, A. Abbady and W. Rashed
Phys. Dept., Faculty of Science, South Valley Univ., Qena, Egypt
elarabi21@yahoo.com.
This paper describes the naturally occurring radioactive materials
(NORM) waste produced by the Egyptian oil industry, soil contaminated
with NORM as a result of uncontrolled disposal of production water was
also considered as NORM waste. The activity concentrations of the
terrestrial naturally occurring radionuclide 226Ra, 232Th and 40K were
determined in produced water and soil samples collected from western
desert using gamma ray spectrometry. The soil activity ranges from 6.07 to
15.29 Bqkg-1 232Th, 15.21 to 38.51 Bq.kg-1 for 226Ra and 136.11 to 299.59
Bqkg-1 for 40K with mean values of 9, 24 and 223 Bq.kg-1 respectively. The
concentrations of these radionuclides are compared with the available data
from other countries. The measured activity concentration of 226Ra and 232Th
and 40K in soil is lower than the world average. Parallel to soil the
radioactivity measurements, produced water was measured. The
measurements of 226Ra activity showed its different concentrations fell
within the range of 19.31 to 43.07 Bqr-3. Although the a real variation in
226
Ra concentrations was found, but the range of variation is not too high
because geological Structure of the study areas is generally 1ime-ston with a
low content of natural radionuclides.
Radium equivalent Raeq activities are calculated for the analyzed
samples to assess the radiation hazards arising due to the use of these soil
samples in the construction of dwellings. All soil samples have radium
equivalent Raeq activities (39.15-83.45 Bq.kg-1) lower than the limit set in
the OECD report (370 Bq.kg-1). The overall mean outdoor terrestrial gamma
dose rate ranging from 18.43 to 39.45 nGy.h-1 and the corresponding
outdoor annual effective dose is 5.16 to 11.05 μ Sv.
Keywords: Gamma spectrometry; Soil; water; Raeq activities; Annual effect
dose
RMD2-4
NATURAL AND ARTIFICIAL RADIOACTIVITIES IN LOCAL
AND IMPORTED CEMENTS
K.R. Mahmoud
Physics and Chemistry Department, Faculty of Education,
Tanta University, Kafr El-Shaikh, Egypt
The activity concentrations of natural and artificial gamma-ray
emitting radionuclides in local and imported cement have been investigated
during the period from 2000 to 2003 using a 50% HPGe γ-spectroscopy
system. The total number of local and imported samples were 29 and 8,
respectively. The results showed a significantly low activity concentration of
137Cs in the local and imported samples. The only exception was found in
one of both Portland cement (imported) and blast furnace slag cement
(local). The mean 137Cs concentration in local and imported cement were
1.05 ± 0.2 and 2.8 ± 0.2 Bq/kg, respectively. The average activity
concentrations of 226Ra, 232Th and 40K in local cement are 33 ± 17, 14±
2.4 and 45 ± 26, respectively, while that calculated in imported cement are
27 ± 7, 8 ± 7 and 134 ± 22, respectively. The large values of standard
deviations indicate that a large dispersion of the concentrations of these
radionuclides in studied samples. The results showed that the cement
samples type blast furnace slag contain the highest level of natural
radioactivity while white cement samples contain the lowest level. The
measured activity concentrations of detected radionuclides were compared
with the reported data of other measurements carried out in Egypt and in
other countries. Radium-equivalent activities were calculated to assess the
radiation hazards arising from using such material in the construction of
doweling. All the measured samples showed radium-equivalent values
smaller than 370 Bq/kg that equivalent to external γ-radiation dose of 1.5
mSv/yr.
RMD2-5
IRRADIATED POLYMETHYLMETHACRYLATE STUDIED BY
POSITRON ANNIHILATION SPECTROSCOPY.
Hamdy F. M. Mohamed, E. E. Abdel-Hady, and Salwa S. Mohamed
Phys. Dept., Faculty of Science, El-Minia Univ., El-Minia, Egypt
hamdyfm@link.net & esamhady@link.net & salwamhmod@yahoo.com
The effects of gamma and electron irradiation dose on microscopic
structure of polymethylmethacrylate (PMMA) have been studied using
positron annihilation lifetime spectroscopy. The measurements were
performed at room temperature as a function of the gamma irradiation doses
from 20-1200 KGy and for the electron irradiation doses from 20-600 KGy.
The positron annihilation lifetime spectra were resolved into three
components using PATFIT program [1]. The ortho-positronium (o-Ps)
lifetime, 3, decreases with increasing the irradiation doses of gamma and
electrons. The o-Ps intensity, I3, increases with increasing the gamma
irradiation doses up to 220 kGy, followed by a decrease. On the other hand,
the o-Ps intensity, I3, increases as the electron irradiation doses increase up
to 120 kGy then it decreases. The results will be presented and discussed on
the frame of the free volume model.
(1) P. Kirkegaard, M. Eldrup, O. E. Mogensen, and N. Pedersen, Comput.
Phys. Commu. 23, 307 (1981): and PATFIT 88 (1988) version.
Wednesday, 23 Nov. 2005
Session CCS
CCS-1
MULTISCALE ANALYSIS OF A FUNCTION BY NEURAL
NETWORKS. ELEMENTARY DERIVATIVES FUNCTIONS.
A. Chikhi, L. Ait-Gougam, and F. Chafa
Theor. Phys. Lab., Faculty of Sc.-Phys., USTHB, El-Alia, Algiers, Algeria.
Recently, the wavelet network has been introduced as a special
neural network supported by the wavelet theory [1]. Such networks
constitute a tool for function approximation problems as it has been already
proved in reference [2]. Our present work deals with this model, treating a
multiscale analysis of a function. We have then used a linear expansion of a
given function in wavelets, neglecting the usual translation parameters. We
investigate two training operations. The first one consists on an optimization
of the output synaptic layer, the second one, optimizing the output function
with respect to scale parameters. We notice a temporary merging of the
scale parameters leading to some interesting results: new elementary
derivatives units emerge, representing a new elementary task, which is the
derivative of the output task.
Keywords : neural networks, wavelets, function approximation.
[1]- S. Mallat, A Theory for multiresolution signal decomposition : the
wavelet transform, IEEE Trans. Pattern Anal. Machine Intell. 11, 674 1989.
[2]- A. Benveniste and Q. Zhang, Neural Networks 3, 889 (1992).
CCS-2
NUMERICAL ANALYSIS OF DIFFERENT NEURAL TRANSFER
FUNCTIONS FOR BEST APPROXIMATION.
L. Ait- Gougam, A. Chikhi, S. Biskri, and F. Chafa
Theo. Phys. Lab., Faculty of Sc.-Phys., USTHB, El-Alia, Algiers, Algeria.
It is widely recognised that the choice of transfer functions in
neural networks is of crucial importance to their performance. In this paper,
different neural transfer functions used for approximation are discussed. We
begin with sigmoïdal functions used most often by different authors [1]. At a
second step, we use Gaussian functions as previously suggested in reference
[2]. Finally, we deal with a specified wavelet family. A comparison between
the three cases cited above is made exhibiting therefore the advantages of
each transfer function. The approached function improves as the dimension
N of the elementary task basis increases.
Keywords: neural networks, wavelets, function approximation.
[1]- S. Mallat, A Theory for multiresolution signal decomposition : the
wavelet transform, IEEE Trans. Pattern Anal. Machine Intell. 11, 674 1989.
[2]- A. Benveniste and Q. Zhang, Neural Networks 3, 889 (1992).
CCS-3
THE USE OF PRINCIPAL COMPONENT AND DISCRIMINATE
ANALYSIS METHODS OF RADIOLOGICAL DATA.
M. K. Seddeek1, A. M. Kozae2, T. Sharshar3, H. M. Badran4,5
1
Dept. of Phys., Faculty of Education, Suez Canal Univ., AI-Arish, Egypt
2
Dept. of Math., Faculty of Science, Tanta Univ., Tanta 31527, Egypt
3
Dept. of Phys. & Chem., Fac. of Educ., Tanta Univ., Kafr EI-Sbaikh, Egypt
4
Dept. of Phys., Faculty of Science, Tanta University, Tanta 31527, Egypt
5
Whipple Observatory, Harvard-Smithsonian Center for Astrophysics,
Amado, USA
In this work, computational methods of finding clusters of
multivariate data points was explored using principal component analysis
(PCA) and discriminate analysis (DA) methods. The variables were the
concentration of four natural isotopes (238U, 226Ra, 232Th, and 40K) and the
characteristics (pH, TOM and three grain size fractions) of 100 sand
samples from the coast of North Sinai, Egypt. Bach and dune sands are the
two types of samples included. The procedure to characterize those samples
and differentiate between any possible grouping among them using PCA and
BA are described. The two methods were used to reduce the dimensionality
of multivariate data and as classification and clustering methods. The results
showed that the classification of sands in the environment of North Sinai is
dependent upon the radioactivity contents of the NORM and not upon the
characteristics of the sand. The application of DA enables the creation of a
classification rule for sand type and it revealed that samples with high
negatively values of the first score have the highest contamination of black
sand. The properties that might be considered for the prediction of the
classification of other samples are only radioactivity concentrations.
Keywords:Radium-226, Thorium-232, Potassium-4 C), black sand statistical
Techniques, Classification; Multivariate analysts
CCS-4
MONTE-CARLO SIMULATION OF PRIMARY ELECTRONS IN
THE MATTER FOR THE GENERATION OF X-RAYS.
H. Bendjama, Y. Laïb, A.Allag, R. Draï
Centre de Recherche Scientifique et Technique en Soudage et Contrôle
The x-rays imagining chains components from the source to the
detector, rest on the first part of simulation to the energy production of xays emission (source), which suggest us to identified the losses energies
result from interaction between the fast electrons and the particles of metal:
the energies losses due to “collisional losses” (ionization, excitation) and
“radiative losses”.
For the medium and the primary electron energy which interests us,
the electrons slowing down in the matter results primarily from the inelastic
collisions; whose interest is to have to simulate the x-rays characteristic
spectrum.
We used a Monte-Carlo method to simulate the energy loss and the
transport of primary electrons. This type of method requires only the
knowledge of the cross sections attached to the description of all the
elementary events.
In this work, we adopted the differential cross section of Mott and
the total cross section of inner-shell ionization according to the formulation
of Gryzinski, to simulate the energy loss and the transport of primary
electrons respectively.
The simulation allows to follow the electrons until their energy
reaches the atomic ionization potential of the irradiated matter. The
differential cross section of Mott gives us a very good representation of the
pace of the distribution of the energy losses. The transport of primary
electron is approximately reproduced.
CCS-5
DETERMINATION OF GAMMA DOSE RATE AROUND ESFAHAN
HEAVY WATER ZERO POWER REACTOR (HWZPR)
USING MCNP CODE
A. A. Rohani1 and A. Shirani
Esfahan University of Technology, Department of Physics, Esfahan, Iran.
aa_roohani @ yahoo.com
Utilization of Esfahan HWZPR facility requires accurate and
precise determination of dose rate around the experimental facilities and
reactor core during reactor operation. Regarding the MCNP code abilities,
it can be employed for reactor benchmark calculations. In this study, we
tried to perform the dose rate calculations by exact and exhaustive definition
of reactor geometry and its vicinities using MCNP code. For this purpose,
two steps are considered, the first step is to define and check the properness
of defined geometry of HWZPR and its components, which are carried out
by comparing of some calculated reactor physics parameters such as neutron
multiplication factor, critical height, axial and radial neutron flux
distributions with the experimental ones. In the next step and after ensuring
about the validity of first step results,  (neutron / fission ) ,
Q value ( MeV / fission ) which are necessary for normalization factor
are calculated. The gamma dose rate and radial dose rate behavior are also
calculated. Finally, the calculated results are compared with measured dose
rates.
Keywords: Gamma dose rate, Axial and radial distribution of neutron flux,
Neutron multiplication factor, MCNP code.
CCS-6
SIMULATION
AND
CLASSIFICATION
OF
PHYSICAL
PROCESSES INTERVENING IN X-RAY ANALYSIS WITH MONTE
CARLO METHOD.
Y. Laib, H. Bendjama, A. Allag, R. Drai.
Laboratoire di Traitement du Signal et de l’Image, Centre de Recherche
Scienrifique et techinique en Soudage eti Controle, Alger-Algerie
Yazitidictityahooft
The X-ray imaging techniques, such as radiography, radioscopy
and tomography are used in various applications, particular in the medical
field and material science. According to the material density, the geometry
and applied energy, the beam X-rays can penetrate in material to analyze
with a depth of several centimeters and bring information in depths among
the defects of macroscopic and microscopic structures. The X-ray beam
applications rest on total phenomena resulting from the elementary
interactions which occur between the photons X aid materials. Then it is
necessary to know the physical phenomena which produced in the sources,
in the object and the detection system. This paper studies by modeling, the
phenomena resulting from the interaction photon X and material, by
approximating a model which takes into account attenuation laws and the
Monte Carlo method. We have developed a numerical model by analogy
with the author's studies and an example of statistical simulation is presented
for monochromatic beam of photons X and for a homogeneous finite and
semi-infinite target Si and Al.
We classified the various physical events which can occur, with a
percentage of appearance. This calculation makes it possible to identify the
event dominating; the other least probable processes (which we can call
them minority phenomena) can bring other information during analysis of a
microstructure and will be negligible in the case of an analysis of
macrostructures. In general we can identify these phenomena by undesirable
mechanisms which disturb the analysis.
Key Words: X-ray, Monte Carlo method, elenientar{ interaction, X-ray i,n
aging.
Session DI3
DI3-1
PERFORMANCE STUDIES FOR A POSITRON ANNIHILATION
LIFETIME SPECTROMETER WITH OPTIMIZED ENERGY
WINDOW SETTINGS.
T. Sharshar* and K. R Mahmoud
Phys. and Chemistry Dept., Faculty of Education, Tanta Univ., Kafr ElShaikh, Egypt
*Tahersharshar@hotmail.com
The performance of a positron annihilation lifetime spectrometer
with optimized energy window settings was checked. The spectrometer
employing the fast-fast coincidence technique with a pair of plastic
scintillation detectors was used in this study. The acquiring system of this
spectrometer was a multi-parameter acquisition system operated in eventby-event list mode. The optimal values of the energy windows of both start
and stop y-rays were determined using a fuzzy approach. The performance
test measurements were carried out using glass and polymer samples. The
spectrometer performance was found to work satisfactory with the optimal
widths of the energy windows.
DI3-2
TESTING POSSIBILITY FOR DETECTION OF
PARAPOSITRONIUM DECAY BY SPECTROMETER ARGUS.
N. Antovic etal,
Serbia and Montenegro
The abstract is not available
DI3-3
DETECTION OF ELECTRONS IN CMS.
Ph. Mine, I. L. R., Ecole Polytechnique, Palaiseau, France
On behalf of the CMS collaboration CERN, France
The design of the electromagnetic detector of the CMS detector at
the CERN LHC, made of 80000 PbWO4 crystals, is described. The recent
measurements of the performances of the barrel in an electron test beam, up
to 250 GeV, are reported. A detailed Mont Carlo program simulates the
reconstruction of electrons, using the electromagnetic calorimeter and the
inner charged particle tracker. Some examples of reactions involving
medium or high energies (11 ZZ*-> 4e-, Randall-Sundrum graviton-> 2e-)
are presented.
DI3-4
TIME CALIBRATION OF THE NEUTRINO MEDITERRANEAN
OBSERVATORY (NEMO).
M. Ruppi.
For the NEMO collaboration, Italy
This paper describes the timing calibration system for the NEMO
underwater neutrino telescope. The NEMO Project aims at the construction
of a km^3 detector, equipped with a large number of photomultipliers, in
the middle of file://Mediterranean Sea//. We foresee a redundant system to
perform the time calibration of our apparatus: 1) A two-step procedure
for measuring the offsets in the time measurements of the NEMO optical
sensors, so as to measure separately the time delay for the
synchronization signals to reach the offshore electronics and the
response time of the photomultipliers to calibration signals delivered
from a pulser through an optical fibre distribution system. 2) An
all-optical procedure for measuring the differences in the time offsets
of the different optical modules by means the same light source. Such a
system can be estended to work for a very large apparatus, even for
complex arrangements of widely spaced sensors. The NEMO prototyping
activities ongoing at a test site off the coast of file://Sicily// will allow
the system described in this work to be operated and tested in situ next
year.
DI3-5
THE NEMO PROJECT - TOWARD A KM3 NEUTRINO
TELESCOPE IN THE MEDITERRANEAN SEA.
M. Circella, on behalf of the NEMO Collaboration
Istituto Nazionale di Fisica Nucleare INFN - Sezione di Bari via Amendola,
Bari, Italy
The NEMO (NEutrino Mediterranean Observatory) Collaboration
is involved in a long-term R&D activity aimed at the construction of a km3scale neutrino telescope in the Mediterranean Sea. After extensive deep-sea
surveys performed in several sites in the Mediterranean, an optimal
installation site for the apparatus has been identified at a depth of 3500 m,
about 80 km off Capo Passero, at the SE corner of Sicily, Italy. In this talk,
we will illustrate the apparatus design and discuss its simulated capabilities.
We will then illustrate the results of our long-lasting R&D efforts toward the
construction of the apparatus. The time calibration system, which is a key
element for the reconstruction accuracy of the apparatus, is described in a
separate presentation at this Conference. The NEMO Project has recently
entered its Phase 1, aimed at the construction, deployment and operation of
a subsystem which includes all the key elements of the apparatus at a test
site located at a depth of 2000 m, about 25 km off the coast of Catania. A
prototype hydrophone station for acoustic observations of high-energy
neutrinos (ONDE) is currently in operation at this test site. The cable for
connecting the Capo Passero deep-sea site to the shore is under design, and
the work to set up the shore station has also started. The plan is to install a
full-size tower at this location in two years (NEMO Phase 2).
DI3-6
DRIFT TUBE MUON DETECTORS FOR THE CMS EXPERIMENT
R. Sacchi, on behalf of the CMS Muon group,
Italy
The CMS experiment will take data at the CERN LHC starting
from 2007. The CMS muon system has been designed to identify,
reconstruct and measure muons with high efficiency and high accuracy. It
includes several types of detectors. In this talk, the features of barrel Drift
Tube chambers will be discussed in detail, covering the layout, the
performance and the current status of the construction. Future milestones
will also be presented.
Session IKN3
IKN3-1
THE THRESHOLD STATES IN THE FRAME OF THE MODEL OF
BINDING ALPHA-PARTICLES.
K. A. Gridnev, S. Yu. Torilov
Saint-Petersburg State University, Saint-Petersburg, Russia
The alpha-particle model of nuclear matter is proposed. In this
model nuclei have the molecular-like structure [1]. For the calculation of the
binding energies and nuclear densities the following procedure was used.
The volume of the nucleus was considered as a three-dimensional grid and
the first alpha-particle is positioned in the center. Then the potential is
calculated in all nodes of the grid and the next alpha-particle is positioned
into the node with the minimum of the potential energy. Then we take two
alpha-particles and calculate their potential putting the third alpha-particle
into the minimum. We continue this procedure step by step; on step N we
have the effective potential for N-1 particle. According to this model the
one-particle potential should have an attraction and repulsive core due to of
Pauli Exclusion Principle. The different potential wells as Lennard-Jones,
Ali-Bodmer, Yukawa and so on, give approximately the tame results, For
our calculations we used also standard Coulomb potential. From this point
of view we got "alpha-magic" numbers - 3' 7, 13..., which correspond to the
geometric figures with the maximal number of bounds per one alphaparticle (maximal tight packing of alpha-particles). These nuclei show peaks
on the diagram of experimental binding energy as function of mass number
[2] and represent the most spread elements in Universe. There is a good
agreement between experimental binding energies and theoretical data.
[1] K. Ikeda, N. Takigawa, H. Horiuchi, Suppl. Progr. Theor. Phys. 1968.
P.464
[2] K.A. Gridnev, S. Yu. Torilov, D. K. Gridnv, V.G. Kartavenko, W.
Greiner, J. Hamilton, submitted to Fur. Phys. J. A (2005)
IKN3-2
LIGHT FRONT VARIABLES IN HIGH ENERGY HADRONHADRON & NUCLEUS-NUCLEUS INTERACTIONS
Vakhtang Garsevanishvili
Math. Inst. of the Georgian, Academy of Sc., Tbilisi, Rep. of Georgia
garse@rmi.acnet.ge
Light front variables are introduced to describe inclusive spectra of
secondary hadrons in hadron-hadron & nucleus-nucleus interactions. Phase
space of secondary pions is naturally divided into two parts, in one of which
a thermal equilibrium seems to be reached. Corresponding temperatures are
extracted from corresponding spectra.
IKN3-3
CHARACTERISTICS OF PYROLYTIC GRAPHITE AS SECONDORDER FILTER IN NEUTRON SCATTERING EXPERIMENTS
M. Adib
Reactor Physics Dept., NRC, EAEA, Cairo, Egypt.
Adibmamdouh@Yahoo.com.
Pyrolytic graphite (PG) has become really in dispensable in
neutron spectroscopy. Presented here are detailed feasibility study on the
use of PG crystal as an efficient second – order filter in terms of optimum
crystal thickness and neutron mosaic spread.
Calculations shows that highly aligned PG may be tuned for
optimum scattering of second – order neutrons in the wavelength range
between 0.112 nm and 4.25 nm by adjusting the filter in an appropriate
orientation.
IKN3-4
QUANTUM ROOTS IN GEOMETRY: II.
M.I. Wanas,
Astronomy Department, Faculty of Science, Cairo University, Egypt
The present work reviews a new trend in theoretical physics, that is
starting from pure geometric considerations some quantum phenomena
could be explored and others could be interpreted, geometrically. It is
shown that path equations, in non-symmetric geometries, admit a term with
a jumping coefficient [1], [2]. The numerical jumping step, of this
coefficient, is one-half. These paths have been generalized [3] and the
resulting general equation has been suggested to represent the trajectory of a
spinning elementary particle in a gravitational field. The term with jumping
coefficient is suggested to represent a new interaction, the spin-torsion
interaction, between the quantum spin of the moving particle and the
torsion of the background gravitational field. It has been shown that this
interaction does exist and its neglect, in calculations, is responsible of the
discrepancy in the results of the COW-experiment (quantum interference
experiment using thermal neutrons). The suggested equation has been used,
successfully, to interpret the time delay of photons and neutrinos coming
from the supernova SN1987A [5]. There are other astrophysical and
cosmological applications of this equation [6], [7].
Recently [8], it has been shown that, if the non-symmetric geometry has
enough room to accommodate electromagnetism, together with gravity, then
a new set of path equations could be obtained. This set contains a new term,
with a jumping coefficient, in addition to the old one. This term reflects a
direct effect of the electromagnetic potential on the motion of a charged
particle. This effect cannot be accounted for using
classical
electrodynamics. It is a pure quantum mechanical effect known as the
Aharonov-Bohm Effect
[1] M.I.Wanas, M.Melek & M.E.Kahil, Astrophys. Space Sci. 228, 273
(1995).
[2] M.I.Wanas & M.E.Kahil, Gen.Rel.Grav. 31, 1921 (1999).
[3] M.I.Wanas, Astrophys. Space Sci. 258, 237 (1998).
[4] M.I.Wanas, M.Melek & M.E.Kahil, Gravitation and Cosmology 6, 319
(2000).
[5] M.I.Wanas, M.Melek & M.E.Kahil, Proc. MGIX, 1100 World Scientific
(2002).
[6] M.I.Wanas, Gravitation and Cosmology 9, 109 (2003)
[7] M.I.Wanas, Proc. XXV-International Workshop on "Fundamental
Problems of High-Energy Physics and Field Theory", Held in Protvino,
Russia 24-28 June 2002, p.315.
[8] M.I.Wanas & M.E.Kahil, to appear in Int.J. Geom. Meth. Mod. Phys. 2
(2005).
made by optimizing the potential parameters with a fit on quarkonia vector
mesons that lie below the threshold of strong decay. Implications of the
obtained results are discussed.
Session HEP3
HEP3-3
APPROXIMATIVE ANALYTIC EIGENVALUES FOR ORBITAL
EXCITATIONS IN THE CASE OF A COULOMB PLUS LINEAR
AND QUADRATIC RADIAL TERMS.
S. Rekab and N. Zenine
Division de Physique Nucléaire, Centre de Recherche Nucléaire d’Alger –
COMENA, 02 Bd Frantz Fanon – Algiers – ALGERIA
NJZENINE@yahoo.com
We consider the three dimensional non relativistic eigenvalue
problem in the case of a Coulomb potential plus linear and quadratic radial
terms. In the framework of the Rayleigh-Schrödinger Perturbation Theory,
using a specific choice of the unperturbed Hamiltonian, we obtain accurate
approximate analytic expressions for the eigenvalues of orbital excitations.
The implications and the range of validity of the obtained analytic
expressions are discussed.
HEP3-1
COMPLETE AND INCOMPLETE FUSION IN REACTIONS
INDUCED BY HEAVY IONS
Manoj Kumar Sharma, B. P. Singh, Unnati, Pushpendra P Singh,
Bhavna Sharma, H. D. Bhardwaj and R. Prasad
Aligarh Muslim University, Aligarh, India
In order to study complete and incomplete fusion in heavy ion
reactions, the excitation functions of several reaction residues produced in
the system 12C+128Te, 16O+159Tb and 16O+169Tm have been measured, using
activation technique. The measured excitation functions have been
compared with the calculations done using several computer codes viz.,
CASCADE, PACE2 and ALICE-91. Comparison of experimentally
measured excitation functions with theoretical calculations has indicated
significant contributions from pre-equilibrium and incomplete fusion in
some reaction channels. Effect of variation of different parameters of the
code on calculated excitation functions has also been studied. Further, in
order to separate out relative contributions of complete fusion and
incomplete fusion channels, the recoil range distributions of several residues
produced in 16O+159Tb and 16O+169Tm systems also been measured.
Analysis of the recoil range distributions shows the significant contributions
from incomplete fusion.
HEP3-2
OPTIMIZED
NON
RELATIVISTIC
POTENTIAL
FOR
QUARKONIA.
S. Rekab and N. Zenine
Division de Physique Nucléaire, Centre de Recherche Nucléaire d’Alger –
COMENA,02 Bd Frantz Fanon – Algiers – ALGERIA
NJZENINE@yahoo.com
For non relativistic quarkonia description, we consider a wide class
of quark antiquark potentials in the form of power law. A systematic study is
HEP3-4
SPACE STRUCTURE OF INTRANUCLEAR HADRON-NUCLEI
COLLISIONS AT SEVERAL Gev.
Bronisław Słowiński1,2*and Andrzej Wojciechowski2
1
Physics Faculty, Warsaw University of Technology, Poland
2
Institute of Atomic Energy, Poland
*slowb@if.pw.edu.pl, wojciech@cyf.gov.pl
It is generally believed that hadrons of energy greater than several
hundreds of MeV move in nuclear matter along a straight line between their
successive collisions. Such a simple approach is often useful providing at
least qualitative insight into many properties and characteristics of nuclear
reactions (for example, [1]). But the nucleonic distribution of nuclei vary
considerably with impact parameter. Moreover, the interactions inside
nuclear matter differ from those in free states doing the intranuclear process
much more complicated. At the same time of great interest are many
associated problems, in particular, to what extent, if any, admissible is the
simplification of this process to an analytic form (like [1]) and what part of
the target nucleus is involved in the so-called fast reaction stage, as well as
how reliable could be the relation between the multiplicity of different
(observed) particles and a degree of centrality of the interaction (expressed
by the impact parameter, not observed), and the same question with regard
to the relation between the particle multiplicity and (pseudo)rapidity
distributions. In order to shed light on these problems the investigations of
spatial structure of intranuclear processes initiated by several GeV pions and
protons have been undertaken. For this purpose two quite different programs
of simulation of these phenomena were chosen: a typical Monte Carlo
cascading code (MC) [2] and an extension of FRITIOF code (FU) [3], based
on the dual parton model (for example, [4]).
In the work we present the results of investigation of spatial
topography of interaction probability evolution as well as energy and
momentum propagation initiated in target nuclei by several GeV pions and
protons. The subject of our study is also the dependence of different
particles distributions on the impact parameter b both by using MC and FU.
2. G.Musulmanbekov, to be published.
3. V.V.Uzhinskii. JINR Communication, E2-96-192. Dubna, 1996.
4. A.Capella and Tran Tanh Van. J.Z.Phys. C10 (1981) 249.
HEP3-5
SEARCH FOR TIME-REVERSAL VIOLATION IN KAON DECAYS.
P. Depommier, For the KEK-PS collaboration, Canada
University of Montreal, Montreal, Canada
I will report on experiments which have been performed at the
Japanese National Laboratory KEK, Tsukuba, Japan.
The Standard Model (SM) of particle physics has been extremely
successful in describing a broad range of phenomena, sometimes with
extreme accuracy. However, we are not completely satisfied with the SM,
for several reasons. And we are hoping to observe some ``physics beyond
the Standard Model''.
An attractive possibility is to search for observables which are not
present (or negligibly small) in the SM. An example is the transverse
polarization of the muon in the decays K +  π 0 μ + υ and K +  γμ + υ , the
first one being particularly attractive because it is practically exempt from
final-state interaction.
The experimental method and experimental set-up will be
described and the upper limits obtained will be presented.
Session NSS3
In the figure depicted are lateral (R) dependences of the probability
(P) of inelastic collisions caused by head-on impacts (b=0) of primary 3.5
GeV/c π- mesons with Xe nuclei and traced along the pions trajectory in
target nuclei (z coordinate): left – according to MC, right – after FU.
1. B.Słowiński. Sov. J. Nuc. Phys., 1974, v.19,N.3, p.301.
NSS3-1
ELECTRON-DEUTERON TENSOR POLARIZATION AND DSTATE PROBABILITY.
A. K. A. Azzam, M. A. Fawzy, A. M. Hassan* and A. M. Yasser*.
Physics Dept., Science Faculty, Alexandria University, Egypt.
*Physics Dept., Science Faculty at Qena, South Valley University, Egypt.
Electron-deuteron tensor polarization T 21 (q) is calculated for
thirty-three of N-N local potential models. New relations have been found
between the peak value T 21 (q) and some of the deuteron properties. An
experimental value of deuteron D-state probability PD = 5.9861  0.2687 %
is deduced.
Keywords: e-d scattering, tensor polarization, deuteron D-state probability,
deuteron quadrupole moment, deuteron form factors.
NSS3-2
FROM THE BOUND SATES SPECTRUM TO THE POTENTIAL:
APPROXIMATE DETERMINATION.
R. Yekken*, R. J. Roland**, F. Z. Ighezou*
*Faculté de Physique, USTHB, El-Alia, Bab-Ezzouar, Alger, Algérie
** Groupe de Physique Théorique, Institut de Physique Nucléaire, 91406
Orsay Cedex, France.
In nonrelativistic quantum mechanics, in order to study any
physical problem of the bound states, one calls upon to the resolution of the
Schrِdinger equation. For this intention, one must initially define the
interaction potential, which allows to describe the properties of the system.
In this work, we are interested to the inverse problem: knowing the spectrum
we search to identify the corresponding potential. For this purpose we are
using a formalism based on a generalization of the Bertlmann and Martin
inequalities (G.I.B.M). It is based on the approximate determination of the
moments at the ground state density,<r2l>1s, from the energies
differences,E1l-E1s. This theory was already tested with much success in
cases which are solvable analytically or semi-analytically. In this paper, we
are apply this technique to a spectrum given by, Enl=- λ /n+l+1.
NSS3-3
THE NEW MODEL OF NUCLEAR STRUCTURE.
Genis Musulmanbekov
Joint Institute of Nuclear Research Dubna, Russia
Starting with a quark model of nucleon structure, elaborated by the
author[1], where the valence quarks are strongly correlated with one another
within the nucleon, the smallest nuclei, 2H, 3H, 3He and 4He can be
constructed by assuming similar correlations With the quarks in neighboring
nucleons, Applying the model to large collections of nucleons reveals the
emergence of symmetries at the nuclear level that are implied by the quarkquark interaction specifically, geometrical shells and subshells that are
isomorphic with those known from the independent-particle (-shell) model.
Significantly, the nuclear texture implied by the strong correlations in the
quark model is not a nucleon gas or independently orbiting nucleons, but
rather a nucleon lattice in which local (quark) interactions are responsible
for all aspects of nuclear binding. By constructing large nuclei in this way,
the quark-based lattice model reproduces the main features of the shell and
liquid-drop models in a fully self- consistent manner. Moreover the binding
energy effects for pairing, even-even, even-odd and odd-odd nuclei meet
natural explanation in the frame of the model. Because of the predominance
of three- and four- body effects in the quark model, medium and heavy
nuclei have transient tetrahedral nucleon aggregates that correspond to the
alpha configurations of the cluster model. In general, lattice arrangements of
nucleons lead in natural way to nuclear deformations, even though nuclei
with closure shells are not spherically symmetric.
It is shown that quark-quark interactions of adjacent nucleons are
responsible for formation of the nuclear configurations that correspond to
the exotic (borromean) nuclei. According to the model a pair of loosely
bound halo neutrons, say in 6He, are arranged in triangular configurations
bound to one proton of the core nucleus. In 8He another pair of halo
neutrons are bound to the second proton of 4He-core. Halo nuclei possess
maximal deformation.
It turns out that at nucleonic degrees of freedom our quark model of
the nucleus structure is identical to the lattice model formulated by N. Cook
and V. Dallacasa more than twenty years ago and called FCC (facecentered-cubic)-lattice model [2]. They demonstrated that it brought
together shell, liquid-drop and cluster characteristics, as found in the
conventional models, within a single theoretical framework.
[1] G. Miusulmanbekov // in Frontiers of Fundamental Physics 4. Ed. B.G.
Sidharth, Klewver// Academic Press, 2001, P.109 and references therein.
[2] N.D. Cook and T. Hayashi// Journal of Physics G, 1997 V.23, P.1109
and references therein.
NSS3-4
NUCLEAR LEVEL DENSITY OF 166Er WITH STATIC
DEFORMATION
Mehdi Nasri Nasrabadi
Physics Department, Kashan University, Kashan, Iran
The level densities of 166Er is calculated using the microscopic
theory of interacting fermions and is compared with experimental. It is
concluded that the data can be reproduced with level density formalism for
nuclei with static deformation.
Keywords: nuclear level density, static deformation
NSS3-5
A NEW METHOD CALCULATION OF POTENTIAL ENERGY
DEFORMED NUCLEI IN THE FINITE RANGE LIQUID DROP
MODEL.
R.S. Kurmanov etal,
Russia
The abstract is not available
NSS3-6
THE STRUCTURE FUNCTIONS G1 AND G2 OF THE NUCLEON IN
THE MESON CLOUD MODEL.
F. Bissey, F.-G. Cao, and A.I. Signal
Institute of Fundamental Sciences PN 461, Massey University, Private Bag
11222, Palmerston North, New Zealand
We calculate the spin dependent structure functions g1(x) and g2(x)
of the nucleon in the meson cloud model of nucleon structure. The
contributions from kinematic terms which mix transverse and longitudinal
Spin components are included. The structure functions of the "hare" hadrons
are calculated by using the MIT bag model and the method of the Adelaide
group. The contributions from polarized gluon distributions are taken into
account in a. phenomenological way. The calculations agree with the
1'
experimental measurements for g1(x) and g2(x) of the proton and the neutron
in a large range of x (0.01 < x < 0.6).
Keywords: Spin, Structure functions, Meson Cloud
NSS3-7
REGULARIZATION OF RELATIVISTIC QUARK DYNAMICS OF
SPIN 3/2 BARYON.
E. F. Suisso, T. Frederico
Dep. de Física, Instituto Tecnológico da Aeronáutica, Centro Técnico
Aeroespacial, São José dos Campos, São Paulo, Brazil.
In the baryon model while the spin is averaged out the quarks
interact through a ¤avor independent contact force which may collapse the
system [1], and due to that it is necessary to regularize the integral
equations. This work is motivated by the recent study performed in ref. [2]
in which a cut-off in the mass of the virtual intermediate state appearing in
the two-body and threebody channels was used to study the stability of the
equal mass three-quark bound state. Then, using different regularization
functions we investigate to which extend the conclusions of ours previous
works [3, 4] depend on the regularization scheme. This work is organized as
follows. In Sec.2, we discuss the coupled integral equations for the nucleon
in the light-front and the regularization schemes. In Sec. 3, we present the
numerical results for the binding energy of the ground state of spin-3/2
baryons, that is, we study the (uuu),  (uus),   (uus),   (sss),
 c  (uuc),  c0 (ddc),  c (udc),  c0 (dsc),  c (usc), and  b0* (css), while the
(1232) mass was £xed to the experimental value. Finally, in Sec. 4 we give
a summary of the work with our conclusion.
[1] T. Frederico, Phys.Lett. B282, 409 (1992); S.K. Adhikari, L. Tomio and
T. Frederico, Ann. Phys. 235, 77 (1994).
[2] M. Beyer, S. Mattiello, T. Frederico, H.J. Weber, Few Body Syst. 33
(2003) 89-97.
[3] E.F. Suisso, J.P.B.C. de Melo, and T. Frederico, Phys. Rev. D65,
094009 (2002); ibid. Braz.J.Phys. 33 (2003) 306-310.
[4] E.F. Suisso, J.P.B.C. de Melo, and T. Frederico, “Talk given at the
Light-ConeWorkshop: Hadrons and Beyond (LC 03), Durham, England, 5-9
Aug 2003”. Published in the Proceedings of the Conference
(http://www.mpi-hd.mpg.de/ilcac/Durham03/) and e-Print Archive: hepph/0311006.
Author Index
Abbady Adel G. E., RMD2-2, RMD2-3
Abbasi A., RMD1-1
Abdel Ghany H.A, NSS1-7
Abdel-Hady E. E., AR2-6, RMD2-5
Abdullin F. Sh., P-2
Abou-Zeid M. A., NSR2-6
Adawi M. A., IKN2-4
Adib M., IKN3-3
Afaneh F., etal, DI1-5
Ahmad M. Ayaz, HEP1-1
Ahmad Shafiq, HEP1-1
AIIag A., CCS-6
Ait- Gougam L., PFP-1, PFP-2, CCS-1, CCS-2
Akhmadshaev A. Sh., AR1-3
Al Azzawe A. J. M., NRP1-4
Alamoudi Z., RMD1-2
Al-Aseery Sh. M., RMD1-2
AL-Berzan Badriah, RMD1-3
Aleksandrov A., DI2-5
Alinejad N., PFP-4
Alizadeh P., RMD1-1
Allag A., CCS-4
Allal N. H., NSS1-3
Allam M. A., NSR3-1
Almahmood E., AR1-4
Al-Okr M. M., NSR3-5
AL-Saleh Ferdoas Saud, RMD1-3
Amrani N., NSR1-1, NRP2-6, AR2-3
Anashin V. V., AR2-1, DI2-3
Andrianov A. A., IKN2-2
Andrianov V. A., IKN2-2
Antonov A. N., etal, IKN2-1
Antovic N., etal, NRP2-5, DI3-2,
Aoutou K., PFP-2
Ardyshev M., DI1-1
Asgharizadeh F., RMD1-1
Ashmawy L., NRP1-1
Assadi M. R., RMD1-1
Assaleh Fateen, RQP1-4
Attallah R., etal, HEP1-4, HEP2-1
Azevedo A. C. P., RMD1-5
Azzam A. K. A., NSS3-1
Babacan T., NSS2-2, NSS2-3
Badran H. M., RMD1-4, CCS-3
Barucci Marco, DI1-3
Bayegan S., RQP1-3, NSS1-6
Bayimbetova J. K., NSS 1-2
Belovitsky G., DI2-5
Bendjama H., CCS-4, CCS-6
Benhamouda N., NSS1-3
Benrekaa N., AR1-2
Bhardwaj H. D., RQP1-2, HEP3-1
Bimbot Louis, For the G0 Collaboration group IKN1-1
Bisht P.S., RQP2-3
Biskri S., CCS-2
Bissey F., NSS3-6
Boucenna A., NSR1-1, NRP2-6, AR2-3, DI2-4
Bouchreb A., RQP2-5
Cao F.-G., NSS3-6
Chafa F., CCS-1, CCS-2
Challan M. B., NSR2-6, NSR3-5
Chandra Kapil, RQP2-2
Changizi V., AR1-1
Chaturvedi Ashish, RQP1-1
Chikaoui S., etal, NSS2-4
Chikhi A., CCS-1, CCS-2
Circella M., On behalf of the NEMO Collaboration, DI3-5
Comsan M. N. H., NSR2-6, NSR3-5
Constantin Liliana-Violeta, PFP-3
Cova Ramon Jose, NSR2-2
Csikai J., IKN2-3
Dahab M., RMD1-5
Dangwal Shalini, RQP2-3
Darwish E. M., NSS1-1, NSR1-3, HEP2-2
Degheidy A. R., NRP1-2
Deldar Sedigheh, RQP1-5
Depommier P., HEP3-4
Dhiman Narinder K., HEP1-5
Dóczi R., IKN2-3
Dostovalov R.V., DI2-3,AR2-1
Draï R., CCS-4, CCS-6
Duda Przemysław, AR2-4
Eissa E. A., NRP1-1, IKN1-2
El Khatib Hesham H., NRP1-6
El-Arabi A. M., RMD2-2, RMD2-3
El-Farrash A.H., NRP1-1
El-Khayat A., NRP1-1
Ellithi A. Y., NSR1-3
El-Wakil S. A., NRP1-2
El-Zohry Mohamed A., HEP2-2
Ermamatov M. J., NSS1-2
Ertugrul Oguz, NRP1-5
Esmael E. H., NSR3-1, NSR3-2
Fareed Somia S., AR2-6
Farid M. El-Azab, NSR3-4
Farid Yousefi H., PFP-4
Fawzy M. A., NSS3-1
Fazal-e-Aleem, NSS2-6
Fellah M., NSS1-3
Fock V. A., IKN2-2
Foggetta Luca, DI1-3
Fousi K., NSR1-3
Frederico T., NSS3-7
Garsevanishvili Vakhtang, IKN3-2
Ghazal A. Sh., NSR3-2, NSR3-3
Giuliani Andrea, DI1-3
Gridnev K. A., IKN3-1
Grinev V. G., NRP2-4
Gritzay O., NRP2-2, NRP2-3, NSR2-7
Grossmann G., AR1-1
Guerbi C. A., AR1-2
Hadizadeh M.R., NSS1-6
Hall C. J., AR1-1
Hanna K. M., NSR2-4, NSR2-5
Harzchi M., PFP-4
Hassan A. A., NSR3-6
Hassan A. M., RMD1-2, NSS3-1
Hassan Kh., RMD1-5
Hassan M. Y. M., NSR3-3
Hegab M. K., NSR1-3
Hochaghani O., RMD1-1
Igamov S.B., NSR1-4
Ighezou F.Z., NSS1-5, NSS3-2
Ismail Adel. L., NRP1-6
Itkis M.G., P-2
Jug Giancarlo, DI1-3
Kadem F., NSR1-5
Kadenko I., NSR2-7
Kalchenko O., NRP2-2, NRP2-3
Khadke U.K., NSR1-2
Khalil H.M., NSS1-7
Khatamov Sh. Kh., AR1-3
Khaydarov A., IKN1-3, NSR2-3
Khoi Dinh Phan, RQP2-6
Khorramian Ali N., HEP2-5
Kimiagar Salimeh, DI2-1
Klimova N., NRP2-2, NRP2-3
Koloty V., NRP2-2
Konobeevski E., DI2-5
Kozac A. M., CCS-3
Krasnov A. A., AR2-1, DI2-3
KüÇükbursa A., NSS2-2, NSS2-3
Kudinova O. I., NRP2-4
Kuhtina I. N., NSR2-5
Kurbanov B. I., etal, AR1-5
Kurmanov R.S., etal, NSS3-5
Kuznetsov S. P., NRP2-4
Laïb Y., CCS-4, CCS-6
Lateef Ali A., NSS1-4
Libman V., NSR2-7, NRP2-2
Lobanov Yu.V., P-2
Lombard R.J., NSS1-5
Long Hoang Ngoc, RQP2-6
Lukyanov K. V., NSR2-4, NSR2-5
Lukyanov S. M., NSR3-6, DI2-5
Lukyanov V. K., P-1, NSR2-4, NSR2-5
Mahmoud K. R., RMD2-4, DI3-1
Malik Sh.S., RQP1-6
Mamadalieva U., RMD2-1
Maouche Dj., NRP1-3
Matin Laleh Farhang, NSS2-1
Medjaje M., DI2-6
Meftah B., DI2-4
Mekideche F., NSR1-5
Metawei Z., NSR2-4
Mezentsev A. N., P-2
Mine Ph., DI3-3
Mohamadain K. E. M., RMD1-5
Mohamed Hamdy F. M., AR2-6, RMD2-5
Mohamed Salwa S., RMD2-5
Mokeev D., DI1-2
Moshfegh Hamidreza, NSR2-1
Moussous O., DI2-6
Mukhammedov S., IKN1-3, NSR2-3
Muslih S. I., RQP2-1
Musulmanbekov G., NSS3-3
Nasrabadi Mehdi Nasri, NSS3-4
Negi O. P. S., RQP2-3, RQP2-4
Nehaoua S., NRP2-6, AR2-3
Nones Claudia, DI1-3
Novokshonova L. A., NRP2-4
Oganessian Yu. Ts., P-2
Olivieri Emiliano, DI1-3
Osinskaya N. S., AR1-3
Oudih M.R., NSR1-3, NSS 1-7
Ounoughi N., DI2-4
Page Philip R., NSR1-6
Pedretti Marisa, DI1-3
Pejmanzad P., RMD1-1
Penionzhkevich Yu. E., NSR3-6
Vasidov A., RMD2-1
Polański Aleksander, P-3
Polukhina N., DI2-5
Polyakov A.N., P-2
Prasad R., RQP1-2, HEP3-1
Puri Rajeev K., HEP1-5
Rafibakhsh Shahnoosh, RQP1-5
Rakhimov Kh., HEP2-3
Rakhmanova T., AR1-3
Rashed W., RMD2-3
Razbudey V., NRP2-3
Rekab S., HEP3-2, HEP3-3
Risegari Lara, DI1-3
Rohani A. A., CCS-5
Roland R. J., NSS3-2
Rudak E. A., NRP2-5
Ruppi M., DI3-4
Saber G., NSR3-5
Sacchi R., DI3-6
Sadeghi H., RQP1-3
Saeed Alam, NSS2-6
Salamov D. I., NSS2-2, NSS2-3
Salehi Ali A., NRP2-1
Sallah M., NRP1-2
Sangiorgio S., AR2-5(on behalf of the CUORE collaboration), DI1-3
Santullaev A., NSR1-4
Sanzhur A., NRP2-3
Saoud R., AR1-2
Seddeek M. K., RMD1-4, CCS-3
Sedgh Gouya E., RMD1-1
Shaakhmedov А., RMD2-1
Shahriari Majid, NRP2-1
Sharipov Sh., NSS1-2
Sharma Bhavna, RQP1-2, HEP3-1
Sharma Manoj Kumar, RQP1-2, HEP3-1
Sharshar T., RMD1-4, CCS-3, DI3-1
Shelagin A. V., NRP2-4
Shirani A., CCS-5
Shirokovsky I. V., P-2
Signal A.I., NSS3-6
Singh B. P., RQP1-2, HEP3-1
Singh Manu Pratap, RQP1-1
Singh Pushpendra P., RQP1-2, HEP3-1
Singh V., HEP2-4
Słowiński Bronisław, P-3, NSR2-4, NSR2-5, AR2-4, HEP3-4
Soa Dang Van, RQP2-6
Sobolev Yu., DI2-5
Soliman N. F., NRP1-1
Soualmia A., AR1-2
Starkov N., DI2-5
Stepanov A., DI2-5
Stoyanov Ch., NSS2-5
Suisso E. F., NSS3-7
Svirikhin A. I., etal, DI1-6
Talai M. C., HEP1-3
Torilov S. Yu., IKN3-1
Toumi Sihem, AR2-2
Tribeche M., PFP-1, PFP-2
Tsyganov Yu. S., P-2
Tulubsov A. Ya., NRP2-5
Udovenko A. I., NRP2-4
Ünlü S., NSS2-2, NSS2-3
Unnati, RQP1-2, HEP3-1
Uosif M. A. M., DI1-4
Utyonkov V. K., P-2
Vasidov A., AR1-3
Ventura Guglielmo, DI1-3
Venturelit Luca, HEP1-6
Vitulo Paolo, On behalf of the CMS/RPC collaboration, DI2-2
Vosoughi Naser, NRP2-1
Wanas M. I., IKN3-4
Wojciechowski Andrzej, HEP3-4
Yahiche K., DI2-6
Yarmukhamedov R., NSR1-4
Yasser A. M., NSS3-1
Yassin, H. NSS1-7
Yekken R., NSS3-2
Yermolenko R., NSR2-7
Zaki M. A., NSR3-4
Zaryouni S., HEP1-2
Zavarzina V., DI2-5
Zemlyanaya E. V., NSR2-4, NSR2-5
Zenine N., HEP3-2, HEP3-3
Zerguini T. H., PFP-2
Zidi T., DI2-4
Zuyev S., DI2-5
Sat., 19 Nov. Sun., 20 Nov.
Wed., 23
Nov.
NRP2/RQP2
CCS/DI3
9:3011:00
OS
NRP1/RQP1
11:0011:30
Tea/Coffee
Tea/Coffee
Free
Tea/Coffee
Tea/Coffee
11:3013:00
P
IKN1
Day
IKN2
IKN3
NSR2/PFP
for
AR2/DI2
HEP3/NSS3
Break
Social
Break
Conf. Lunch
13:00HEP1/NSS1
14:30
14:3015:30
Break
15:30NSR1/RMD1
17:00
17:0018:30
OS
P
IKN
HEP
NSR
NSS
NRP
AR1/DI1
Activities NSR3/RMD2
CS
HEP2/NSS2
19:30Cult. Evening
22:00
5th Conference on Nuclear and Particle Physics
19-23 Nov. 2005 Cairo, Egypt
Conference Timetable
Mon., 21
Tue., 22 Nov.
Nov.
Cruise on the
Nile
Fat. Cairo
Table Abbreviations
Detectors & Insrtumentation
DI
Computer Codes & Simulation
CCS
RQP Relativistic & Quantum Physics
Plasma & Fusion Physics
PFP
Opening Session
Plenary
Invited/Keynote Talks
High Energy Physics
Nuclear Scattering &
Reactions
Nuclear Structure &
Spectroscopy
Neutron & Reactor Physics
RMD
Radiation Measurement &
Dosimetry
AR
Activity Review
CS
Concluding Session