Results 251 to 260 of about 1,245,725 (288)

Nuclear level-density parameter in hot nuclei

Physical Review C, 1989
The influence of both quantal and thermal fluctuations on the level-density parameter {ital a} in hot nuclei is investigated. It is found that the large-amplitude motion of the nuclear surface has little influence on {ital a} and that the observed temperature and angular momentum behavior is properly explained through the thermal properties of the ...
, Ormand, , Bortignon, , Bracco, , Broglia   +3 more
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Nuclear level densities with blocking effect

Il Nuovo Cimento A, 1981
A formalism is presented for level density calculations of odd-N and/or -Z nuclei. A comparison is made with experimental data from the analysis of neutron resonances at binding energy.
V. Benzi, G. Maino, E. Menapace
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The characteristic level and the nuclear level density

Nuclear Physics, 1958
Abstract The suggestions put forward by Bethe and Hurwitz that level densities ought to be measured from a standard energy, such as is given by the semi-empirical formula, and not from nuclear ground states is considered. The semi-empirical formula is corrected, following P. Fong, and this “characteristic level” is determined for nuclei from A = 10
M. El-Nadi, M. Wafik
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Nuclear level density with realistic interactions

Physical Review C, 1977
A formalism is developed which can be used to calculate nuclear level densities with realistic interactions. The grand partition function is constructed and the level density is obtained by Laplace inversion. The formalism is a generalization of the technique used when the only residual interaction is the pairing force.
F. N. Choudhury, S. Das Gupta
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Isospin and nuclear level density

Nuclear Physics A, 1968
Abstract Level densities of nuclei of A = 24 and 28 are calculated as a function of the isospin and the total angular momentum. A statistical treatment is used, and the level densities are calculated for a system of free particles and a system with the symmetry energy term taken into account.
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Nuclear level density with schematic forces

Physical Review C, 1978
For a system of fermions interaction via a pure pairing force, exact level densities are obtained in a semirealistic model space. The results are transmitted through graphs and tables so that they are readily available for comparison with various approximate methods.
B. C. Smith, F. N. Choudhury, S. Das Gupta   +2 more
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Nuclear level densities and level spacing distributions

1986
Extensive and complete level schemes and neutron resonance densities of 72 nuclides have been used to determine the spin cut-off parameter, parameters for level density formulae and level spacing distributions. The level spacing distributions indicate either very different nuclear structures or the existence of a further good quantum number at low ...
T. von Egidy, A. N. Behkami, H. H. Schmidt   +2 more
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Level densities and nuclear thermometry

2008
AbstractBased on the Darwin-Fowler approximation various models for the many-body level density Ω are introduced, critically examined, and confronted with empirical parameterizations. This concerns both the macroscopic limit as well as the case where shell effects are included. Interpretations in the spirit of thermostatics are given.
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Surface Contributions to Nuclear Level Densities

1983
A general leptodermous expansion for the density of single particle levels in thin skinned potential wells is derived and is used to study the finite size corrections to the macroscopic level density parameters of nuclei. With droplet model values for the potential parameters, the calculated level density parameters for nuclei along the beta stability ...
V. S. Ramamurthy, S. K. Kataria, M. Asghar   +2 more
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Nuclear Level Density Parameter

2008
The nuclear level-density parameters obtained in the Yukawa folded potential approach are presented. The particle-number averaging ({N} averaging) Strutinsky shell-correction method is used to extract the shell-correction energy and its change with temperature and the macroscopic nuclear energy for 130 spherical even-even nuclei.
Nerlo-Pomorska, B., Pomorski, K., Bartel, J., Dobrowolski, A.   +3 more
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