Hidden configurations and effective interactions: A comparison of three different ways to construct renormalized hamiltonians for truncated shell-model calculations

1975 ◽  
Vol 90 (2) ◽  
pp. 321-390 ◽  
Author(s):  
B.R Barrett ◽  
E.C Halbert ◽  
J.B McGrory
Keyword(s):  
Shell Model ◽  
Model Calculations ◽  
Effective Interactions

scholarly journals Gamow-Teller strengths of some sd-shell nuclei in the shell model framework

2020 ◽  
Vol 66 (3 May-Jun) ◽  
pp. 330 ◽  
Author(s):  
S. M. Obaid ◽  
H. M. Tawfeek
Keyword(s):  
Shell Model ◽  
Model Space ◽  
Transition Strength ◽  
Model Framework ◽  
Model Calculations ◽  
Effective Interactions ◽  
Calculated Distribution ◽  
Gamow Teller ◽  
Sd Model ◽  
Strength Distributions

The nuclear Gamow-Teller (GT) transition strength distributions B(GT)have been studied for some sd-shell nuclei in the (3He, t) charge-exchangereactions. The shell model calculations were performed by employing theUSDA and USDB effective interactions in the sd-model space. The results of B(GT) calculations reproduce the the experimental Gamow-Tellerstrength distributions well, while the calculated distribution of summedGT transition strengths were closely reproduce the observed ones.

scholarly journals Shell-model calculations and realistic effective interactions

2009 ◽  
Vol 62 (1) ◽  
pp. 135-182 ◽  
Author(s):  
L. Coraggio ◽  
A. Covello ◽  
A. Gargano ◽  
N. Itaco ◽  
T.T.S. Kuo
Keyword(s):  
Shell Model ◽  
Model Calculations ◽  
Effective Interactions

scholarly journals Single particle energies and nuclear g factors

2017 ◽  
Vol 26 (09) ◽  
pp. 1750053 ◽  
Author(s):  
Shadow Robinson ◽  
Larry Zamick
Keyword(s):  
Shell Model ◽  
Single Particle ◽  
Ground State ◽  
Particle State ◽  
Complex Interplay ◽  
Model Calculations ◽  
Effective Interactions ◽  
State Splitting ◽  
State Affect ◽  
Nuclear Shell

Adding one neutron to doubly magic [Formula: see text]Sn, we can associate the low lying states in[Formula: see text]Sn with single particle states. Thus, the [Formula: see text] and [Formula: see text] states are identified as the [Formula: see text] and [Formula: see text] single particle states, respectively. In [Formula: see text]Sn, these two low lying states are separated by an energy of 0.172[Formula: see text]MeV. Currently, there is a dispute as to the ordering of these states. We examine how the two scenarios, selecting [Formula: see text] as the ground state or [Formula: see text] as the ground state, affect spectra and nuclear [Formula: see text] factors of higher mass Sn isotopes in a variety of shell model situations. Significantly, this includes examining the complex interplay of the choice of single particle state splitting, effective interactions, and effective [Formula: see text]-factors in nuclear shell model calculations. Of particular importance is how the trends in the calculated results for [Formula: see text] factors diverge from recent experimental measurements for the higher mass isotopes of Sn.

scholarly journals High-spin structures of 77,79,81,83As isotopes

2015 ◽  
Vol 30 (19) ◽  
pp. 1550093 ◽  
Author(s):  
Vikas Kumar ◽  
P. C. Srivastava ◽  
Irving O. Morales
Keyword(s):  
Shell Model ◽  
Magnetic Moments ◽  
Energy Levels ◽  
Model Space ◽  
Theoretical Development ◽  
Model Calculations ◽  
Effective Interactions ◽  
Spin Structures ◽  
Neutron Pair ◽  
Good Agreement

In this paper, we report comprehensive set of shell model calculations for arsenic isotopes. We performed shell model calculations with two recent effective interactions JUN45 and jj44b. The overall results for the energy levels and magnetic moments are in rather good agreement with the available experimental data. We have also reported competition of proton- and neutron-pair breakings analysis to identify which nucleon pairs are broken to obtain the total angular momentum of the calculated states. Further theoretical development is needed by enlarging model space by including [Formula: see text] and [Formula: see text] orbitals.

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