Shell model calculations for 34Cl and 38K with the modified surface delta interaction including a tensor force

1970 ◽  
Vol 33 (8) ◽  
pp. 559-562 ◽  
Author(s):  
D. Evers ◽  
W. Stocker
Keyword(s):  
Shell Model ◽  
Tensor Force ◽  
Model Calculations ◽  
Modified Surface ◽  
Surface Delta Interaction

Energy Levels of 50Ca Nucleus as a Function of the Classical Coupling Angle within MSDI

2021 ◽  
Vol 19 (5) ◽  
pp. 61-67
Author(s):  
Ali Khalaf Hasan ◽  
Dalal Naji Hameed
Keyword(s):  
Experimental Data ◽  
Angular Momentum ◽  
Shell Model ◽  
Energy Levels ◽  
Model Space ◽  
Closed Shell ◽  
Excitation Energies ◽  
Modified Surface ◽  
Coupling Angle ◽  
Surface Delta Interaction

In the construction of this kind of shell model, we take the residual interaction to be modified surface delta interaction MSDI. We have studied the excitation energies of the 50Ca a nucleus, which contain two neutrons outside closed shell of the 48Ca. Neutrons are in the model space pfpg. The energy levels and angular momentum of all possible cases were investigated. Thereby, we have effectively utilized a theoretical process to find link among the traditional coupling angle and energy levels at different orbital within neutron - neutron interaction. We observe the energy stages appear to follow two overall functions which depend on the classical coupling angles but are unconstrained of angular momentum I. We find out that our results agree with the experimental data.

EXOTIC ELECTROMAGNETIC TRANSITIONS IN NEUTRON-RICH CARBON ISOTOPES

2009 ◽  
Vol 18 (10) ◽  
pp. 1992-1996 ◽  
Author(s):  
TOSHIO SUZUKI ◽  
TAKAHARU OTSUKA
Keyword(s):  
Shell Model ◽  
Carbon Isotopes ◽  
Magnetic Dipole ◽  
Tensor Force ◽  
Electromagnetic Properties ◽  
Matrix Elements ◽  
Electromagnetic Transitions ◽  
Model Calculations ◽  
Shell Matrix ◽  
Model Hamiltonian

Structure and electromagnetic properties of exotic neutron-rich carbon isotopes are studied by shell model calculations. A p-sd shell model Hamiltonian is modified by enhancing the effects of the tensor force in the p-sd cross shell matrix elements as well as with corrections in the T=1 monopole terms. A considerable suppression of the magnetic dipole (M1) transition in 17 C from the [Formula: see text] state recently observed is found to be well explained by the modified Hamiltonian. The anomalous hindrance of the quadrupole (E2) transitions in 16 C and 18 C is also shown to be reproduced by our new Hamiltonian.

scholarly journals Nuclear energy levels in 58Ni

2019 ◽  
Vol 24 (3) ◽  
pp. 100
Author(s):  
Firas Zuhair Majeed1 ◽  
, Ammar A. Battawy2 ◽  
Muhanned A. Ahmed2
Keyword(s):  
Experimental Data ◽  
Shell Model ◽  
Energy Levels ◽  
Nuclear Shell Model ◽  
Harmonic Oscillator Potential ◽  
Angular Momenta ◽  
Inert Core ◽  
Modified Surface ◽  
Nuclear Shell ◽  
Surface Delta Interaction

Energy levels, total angular momenta and parity for two nucleons that present outside closed core 56Ni (Nickel) which occupied FP nuclear shell have been calculated using nuclear shell model application. We have used FP M3YE interaction to calculate energy levels of 58Ni, in addition, the results are compared with experimental data, modified surface delta interaction (MSDI), Reid's potential (RP) and non-zero pairing shell model (NZPSM). Harmonic Oscillator potential is used to generate single particle wave functions in FP shell and considering  as an inert core. Oxford Buenos Aires Shell Model (OXBASH) code for nuclear shell model calculation has been utilized to carry out the calculations and comparison with experimental data had been done.   http://dx.doi.org/10.25130/tjps.24.2019.054 

scholarly journals Energy Levels of Isobaric Nuclei (16N, 16F) within the Modified Surface Delta-Interaction Model

2018 ◽  
Vol 63 (7) ◽  
pp. 579 ◽  
Author(s):  
D. N. Hameed ◽  
A. K. Hasan
Keyword(s):  
Experimental Data ◽  
Shell Model ◽  
Energy Levels ◽  
Interaction Model ◽  
Excitation Energies ◽  
Modified Surface ◽  
Good Agreement ◽  
Surface Delta Interaction

The modified surface delta-interaction model is applied to calculate the energy levels of 16N and 16F) nuclei. The good agreement between theoretical and experimental data is attained for excitation energies. This indicates that the shell model describes properly the structure of these nuclei.

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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