Level density for some partially random Hamiltonians

1970 ◽  
Vol 69 (2) ◽  
pp. 181-208 ◽  
Author(s):  
A. Gervois
Keyword(s):  
Level Density ◽  
Random Hamiltonians

"Universality" of Gaussian orthogonal ensemble fluctuations: the two-body random ensemble and shell model spectra

1990 ◽  
Vol 68 (3) ◽  
pp. 301-312 ◽  
Author(s):  
Gaetan J. H. Laberge ◽  
Rizwan U. Haq
Keyword(s):  
Energy Level ◽  
Shell Model ◽  
Detailed Analysis ◽  
Close Agreement ◽  
Level Density ◽  
Nuclear Interactions ◽  
Gaussian Orthogonal Ensemble ◽  
Random Hamiltonians

Starting from an appropriate decomposition of the level density into an average and fluctuating part, we studied the energy level fluctuations of an ensemble defined by two-body random Hamiltonians. A detailed analysis of several spectrally averaged fluctuation measures shows close agreement with the predictions of the Gaussian orthogonal ensemble (GOE). This confirms earlier indications that, except for noninteracting particles, fluctuation measures are insensitive to the rank of the interaction. Further, analysis of spectra obtained from realistic nuclear interactions agrees well with the GOE indicating that specific properties of the Hamiltonian have little or no influence on fluctuations. These results, therefore, strengthen our belief in the "universality" of GOE fluctuations.

Test of Fermi gas model predictions of level density inXe137

1985 ◽  
Vol 31 (6) ◽  
pp. 2041-2048 ◽  
Author(s):  
B. Fogelberg ◽  
J. A. Harvey ◽  
M. Mizumoto ◽  
S. Raman
Keyword(s):  
Level Density ◽  
Fermi Gas ◽  
Model Predictions

Comparison of fission barrier and level density models for (α,f) reaction of some heavy nuclei

2014 ◽  
Vol 70 ◽  
pp. 175-179 ◽  
Author(s):  
İsmail H. Sarpün ◽  
Abdullah Aydın ◽  
Abdullah Kaplan ◽  
Hülya Koca ◽  
Eyyüp Tel
Keyword(s):  
Level Density ◽  
Fission Barrier ◽  
Heavy Nuclei ◽  
Level Density Models

Analysis of continuum level density for virtual and resonance states

2021 ◽  
Author(s):  
M. Odsuren ◽  
G. Khuukhenkhuu ◽  
A. T. Sarsembayeva ◽  
N. Amangeldi ◽  
K. Katō
Keyword(s):  
Level Density ◽  
Resonance States

scholarly journals Puzzle of collective enhancement in the nuclear level density

2021 ◽  
pp. 136173
Author(s):  
Deepak Pandit ◽  
Balaram Dey ◽  
Srijit Bhattacharya ◽  
T.K. Rana ◽  
Debasish Mondal ◽  
...  
Keyword(s):  
Level Density ◽  
Nuclear Level Density ◽  
Nuclear Level

An investigation of effects of level density models and gamma ray strength functions on cross-section calculations for the production of 90Y, 153Sm, 169Er, 177Lu and 186Re therapeutic radioisotopes via (n,γ) reactions

2019 ◽  
Vol 108 (1) ◽  
pp. 11-17
Author(s):  
Mert Şekerci ◽  
Hasan Özdoğan ◽  
Abdullah Kaplan
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Production Cross Section ◽  
Gamma Ray ◽  
Production Cross ◽  
Level Density ◽  
Experimental Studies ◽  
Level Density Models ◽  
Strength Functions ◽  
Cancer Diseases

Abstract One of the methods used to treat different cancer diseases is the employment of therapeutic radioisotopes. Therefore, many clinical, theoretical and experimental studies are being carried out on those radioisotopes. In this study, the effects of level density models and gamma ray strength functions on the theoretical production cross-section calculations for the therapeutic radioisotopes 90Y, 153Sm, 169Er, 177Lu and 186Re in the (n,γ) route have been investigated. TALYS 1.9 code has been used by employing different level density models and gamma ray strength functions. The theoretically obtained data were compared with the experimental data taken from the literature. The results are presented graphically for better interpretation.

Level density parameters for the back-shifted fermi gas model in the mass range 40 < A < 250

1973 ◽  
Vol 217 (2) ◽  
pp. 269-298 ◽  
Author(s):  
W. Dilg ◽  
W. Schantl ◽  
H. Vonach ◽  
M. Uhl
Keyword(s):  
Level Density ◽  
Mass Range ◽  
Fermi Gas

scholarly journals Moments Method for Shell-Model Level Density

2016 ◽  
Vol 665 ◽  
pp. 012048 ◽  
Author(s):  
V Zelevinsky ◽  
M Horoi ◽  
R A Sen'kov
Keyword(s):  
Shell Model ◽  
Level Density ◽  
Moments Method
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