Frontiers of Shell-Model Description for Atomic Nuclei

2005 ◽  
Author(s):  
M. Honma
Keyword(s):  
Shell Model ◽  
Model Description ◽  
Atomic Nuclei

A Shell Model Description of Light Nuclei

Physics Today ◽  
1978 ◽  
Vol 31 (8) ◽  
pp. 55-56 ◽  
Author(s):  
I. S. Towner ◽  
John W. Negele
Keyword(s):  
Shell Model ◽  
Light Nuclei ◽  
Model Description

WHY ARE SOME NUCLEI SPHERICAL?

1993 ◽  
Vol 02 (supp01) ◽  
pp. 71-79 ◽  
Author(s):  
KRISHNA KUMAR
Keyword(s):  
Potential Energy ◽  
Spherical Shell ◽  
Shell Model ◽  
Energy Minimization ◽  
Zero Point ◽  
Natural State ◽  
Atomic Nuclei ◽  
Point Motion ◽  
Spherical Nuclei ◽  
General Conditions

Energy minimization is not sufficient to determine whether a nucleus is spherical or deformed. The quantal zero-point motion can make a nucleus spherical even if the potential energy has a deformed minimum. However, some general conditions give deformed shape as the natural state of atomic nuclei. They are spherical only under some special conditions. Some general criteria for distinguishing spherical nuclei from deformed, as well as some advantages of using a deformed-shell model rather than a spherical-shell model, are presented.

Shape mixing and the shell-model description of the isotopes of neon

1971 ◽  
Vol 35 (1) ◽  
pp. 11-15 ◽  
Author(s):  
M.H. Macfarlane ◽  
A.P. Shukla
Keyword(s):  
Shell Model ◽  
Model Description

scholarly journals Shell model description of heavy nuclei and abnormal collective motions

2018 ◽  
Vol 178 ◽  
pp. 02015
Author(s):  
Chong Qi
Keyword(s):  
Shell Model ◽  
Degrees Of Freedom ◽  
Large Scale ◽  
Model Description ◽  
Heavy Nuclei ◽  
Collective Models ◽  
Collective Behaviors ◽  
Electromagnetic Transition ◽  
Nuclear Shell ◽  
Model Approach

In this contribution I present systematic calculations on the spectroscopy and electromagnetic transition properties of intermediate-mass and heavy nuclei around 100Sn and 208Pb. We employed the large-scale configuration interaction shell model approach with realistic interactions. Those nuclei are the longest isotopic chains that can be studied by the nuclear shell model. I will show that the yrast spectra of Te isotopes show a vibrational-like equally spaced pattern but the few known E2 transitions show rotational-like behaviour. These kinds of abnormal collective behaviors cannot be reproduced by standard collective models and provide excellent background to study the competition of single-particle and various collective degrees of freedom. Moreover, the calculated B(E2) values for neutron-deficient and heavier Te isotopes show contrasting different behaviours along the yrast line, which may be related to the enhanced neutron-proton correlation when approaching N=50. The deviations between theory and experiment concerning the energies and E2 transition properties of low-lying 0+ and 2+ excited states and isomeric states in those nuclei may provide a constraint on our understanding of nuclear deformation and intruder configuration in that region.

scholarly journals Shell-model Description in $^{99}$Rh and Systematics of Odd-$A$ Rh Isotopes

2019 ◽  
Vol 50 (2) ◽  
pp. 159
Author(s):  
S. Kumar ◽  
S. Sihotra ◽  
V. Singh ◽  
J. Rather ◽  
M. Kaur ◽  
...  
Keyword(s):  
Shell Model ◽  
Model Description

SHAPE EVOLUTION OF HIGHLY DEFORMED 75Kr AND PROJECTED SHELL MODEL DESCRIPTION

2010 ◽  
Vol 19 (08n09) ◽  
pp. 1754-1762 ◽  
Author(s):  
YING-CHUN YANG ◽  
YANG SUN ◽  
T. TRIVEDI ◽  
R. PALIT ◽  
J. A. SHEIKH
Keyword(s):  
Shell Model ◽  
Negative Parity ◽  
Model Description ◽  
Shape Evolution ◽  
Quadrupole Moments ◽  
Projected Shell Model ◽  
Model Calculations ◽  
High Spin States ◽  
Parity Band ◽  
Insight Into

A study of recently-measured high spin states of 75 Kr is carried out by using the Projected Shell Model. Calculations are performed up to spin I = 33/2 for the positive parity band and I = 27/2 for the negative parity band. Irregularities found in moment of inertia and in the deduced transition quadrupole moments Q t of the two bands are discussed in terms of the alignment of g 9/2 protons. Our study provides an insight into the shape evolution of the well-deformed nucleus 75 kr .

scholarly journals Gamow shell model description of He4(d,d) elastic scattering reactions

2019 ◽  
Vol 99 (4) ◽  
Author(s):  
A. Mercenne ◽  
N. Michel ◽  
M. Płoszajczak
Keyword(s):  
Elastic Scattering ◽  
Shell Model ◽  
Model Description
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