Limitation on heavy ion fusion and nuclear level density at high excitation energies

1984 ◽  
Vol 29 (5) ◽  
pp. 1948-1950 ◽  
Author(s):  
M. Ohta ◽  
K. Hatogai ◽  
S. Okai ◽  
Y. Abe
Keyword(s):  
Level Density ◽  
Heavy Ion ◽  
Nuclear Level Density ◽  
High Excitation ◽  
Excitation Energies ◽  
Nuclear Level ◽  
Heavy Ion Fusion

scholarly journals The nuclear level density parameter

2019 ◽  
Vol 11 (20) ◽  
pp. 35-46
Author(s):  
Rasha S. Ahmed
Keyword(s):  
Level Density ◽  
State Density ◽  
Density Parameter ◽  
Nuclear Level Density ◽  
Excitation Energies ◽  
Nuclear Level ◽  
Level Density Parameter ◽  
Experimental Works ◽  
Experimental Values ◽  
Energy Dependent

The nuclear level density parameter  in non Equi-Spacing Model (NON-ESM), Equi-Spacing Model (ESM) and the Backshifted Energy Dependent Fermi Gas model (BSEDFG) was determined for 106 nuclei; the results are tabulated and compared with the experimental works. It was found that there are no recognizable differences between our results and the experimental -values. The calculated level density parameters have been used in computing the state density as a function of the excitation energies for 58Fe and 246Cm nuclei. The results are in a good agreement with the experimental results from earlier published work.

A COMPOSITE NUCLEAR-LEVEL DENSITY FORMULA WITH SHELL CORRECTIONS

1965 ◽  
Vol 43 (8) ◽  
pp. 1446-1496 ◽  
Author(s):  
A. Gilbert ◽  
A. G. W. Cameron
Keyword(s):  
Lower Energy ◽  
Level Density ◽  
Energy Levels ◽  
Fermi Gas ◽  
Experimental Information ◽  
Shell Correction ◽  
Nuclear Level Density ◽  
Excitation Energies ◽  
Nuclear Level ◽  
Level Densities

At low excitation energies a "constant nuclear temperature" representation of nuclear-level densities is used, and at high excitation energies the regular Fermi gas formula is adopted. A method is developed for determining the parameters of the Fermi gas formula by using both the pairing and the shell-correction energies found by Cameron and Elkin for their semiempirical atomic mass formula in its exponential form. This procedure determines level densities at neutron-binding-energy excitations subject to an average factor error of 1.8. Methods are also developed for determining the parameters for the lower-energy formula in such a way that it best fits the lower-energy levels and joins smoothly to the Fermi gas formula. Correlations of the resulting parameters with shell and pairing effects are found. A composite prescription is given for calculating level densities in nuclei for which no experimental information is known. Tables give level density parameters for a wide variety of nuclei for which some experimental information is known. Some of the derivations of the Fermi gas formula in the literature were found to be slightly incorrect, so new derivations are presented in Appendixes.

Determination of the nuclear level density at high excitation energy

1991 ◽  
Vol 43 (2) ◽  
pp. 666-677 ◽  
Author(s):  
A. Chbihi ◽  
L. G. Sobotka ◽  
N. G. Nicolis ◽  
D. G. Sarantites ◽  
D. W. Stracener ◽  
...  
Keyword(s):  
Excitation Energy ◽  
Level Density ◽  
High Excitation Energy ◽  
Nuclear Level Density ◽  
High Excitation ◽  
Nuclear Level

Experimental investigations of the nuclear level density by using heavy ion reactions

Pramana ◽  
1999 ◽  
Vol 53 (3) ◽  
pp. 395-404 ◽  
Author(s):  
G Viesti ◽  
M Lunardon ◽  
D Fabris ◽  
G Nebbia ◽  
M Cinausero ◽  
...  
Keyword(s):  
Level Density ◽  
Heavy Ion ◽  
Experimental Investigations ◽  
Nuclear Level Density ◽  
Nuclear Level ◽  
Heavy Ion Reactions

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
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