Center-of-mass motion on shell-model calculations with arbitrary central potential

1969 ◽  
Vol 124 (3) ◽  
pp. 609-623 ◽  
Author(s):  
H. Nissimov ◽  
I. Unna
Keyword(s):  
Shell Model ◽  
Center Of Mass ◽  
Mass Motion ◽  
Model Calculations ◽  
Central Potential

12C isotope in relativistic cluster model

2019 ◽  
Vol 34 (20) ◽  
pp. 1950158 ◽  
Author(s):  
N. Roshanbakht ◽  
M. R. Shojaei
Keyword(s):  
Experimental Data ◽  
Wave Function ◽  
Cluster Model ◽  
Center Of Mass ◽  
Mass Motion ◽  
Body System ◽  
Central Potential ◽  
Relative Coordinates ◽  
Klein Gordon ◽  
Good Coincidence

12C isotope composing 3[Formula: see text] cluster was investigated in this study. Therefore, 12C can be considered as a 3-body system. For studying the interactions in 3[Formula: see text] clusters, a central potential was applied. Jacobi relative coordinates were also employed and center of mass motion was removed. In this paper, the Klein–Gordon (K–G) equation was solved using Nikiforov–Uvarov potential. At the end, the energy spectrum and wave function of isotope 12C were determined and the results were compared with the experimental data which showed good coincidence reflecting the success of our model in prediction.

On the center-of-mass spuriosity in continuum shell-model calculations for 4He

1977 ◽  
Vol 66 (3) ◽  
pp. 213-215 ◽  
Author(s):  
G. Do Dang ◽  
S. Ramavataram ◽  
K. Ramavataram
Keyword(s):  
Shell Model ◽  
Center Of Mass ◽  
Model Calculations

scholarly journals SHORTCUTS TO NUCLEAR STRUCTURE: LESSONS IN HARTREE–FOCK, RPA, AND THE NO-CORE SHELL MODEL

2005 ◽  
Vol 14 (01) ◽  
pp. 57-65
Author(s):  
CALVIN W. JOHNSON ◽  
IONEL STETCU
Keyword(s):  
Shell Model ◽  
Nuclear Structure ◽  
Random Phase Approximation ◽  
Center Of Mass ◽  
Random Phase ◽  
Mass Motion ◽  
Core Shell ◽  
Microscopic Approach ◽  
Hartree Fock ◽  
Appropriate Treatment

While the no-core shell model is a state-of-the-art microscopic approach to low-energy nuclear structure, its intense computational requirements lead us to consider time-honored approximations such as the Hartree–Fock (HF) approximation and the random phase approximation (RPA). We review RPA and point out some common misunderstandings, then apply HF + RPA to the no-core shell model. Here the main issue is appropriate treatment of contamination by spurious center-of-mass motion.

Grid Lifetime Measurements and Shell Model Calculations In 59Ni

1991 ◽  
Author(s):  
S. Ulbig ◽  
K. P. Lieb ◽  
H. G. Börner ◽  
S. J. Robinson ◽  
J. G. L. Booten
Keyword(s):  
Shell Model ◽  
Lifetime Measurements ◽  
Model Calculations

Low-lying Negative-parity Levels of 17N and 18N

1984 ◽  
Vol 37 (1) ◽  
pp. 17 ◽  
Author(s):  
FC Barker
Keyword(s):  
Shell Model ◽  
Weak Coupling ◽  
Coupling Model ◽  
Negative Parity ◽  
Positive Parity ◽  
Model Calculations

On the basis of a weak-coupling model, adjustments are made to the interactions used in the full shell model calculations of Millener in order to fit the experimental energies of the low-lying negativeparity levels of 16N and of the low-lying positive-parity levels of 180 and 190 . The predicted energies of the low-lying negative-parity levels of 17N then agree better with experiment, while those for 18N lead to suggested spin assignments for the observed levels.

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