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Nuclear Level Densities Calculations
Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), 2021There is a need to determine nuclear level densities since experiments that defect nuclear level densities can not observe some of these densities, because of experimental limitations. The missed level could be calculated using standard correction of Porter-Thomas width distribution.
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Nuclear Level Densities in the Static-Path Approximation
Physical Review Letters, 1988We propose a unified theory of nuclear level densities, encompassing both spherical and deformed nuclei, using the static-path approximation. The theory appears numerically tractable for a pairing-plus-quadrupole Hamiltonian.
, Lauritzen, , Arve, , Bertsch
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Measurement of the Nuclear Level Density at High Spins
Physical Review Letters, 1988The neutron spectrum from the reaction /sup 92/Zr(/sup 64/Ni, 1n)/sup 155/Er has been measured at an average spin of 52h-dash-bar and for excitation energies between 30 and 36 MeV in /sup 155/Er. Channel and spin selection have been obtained from the Darmstadt-Heidelberg crystal ball.
Henss, S. +15 more
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Nuclear level-density parameter in hot nuclei
Physical Review C, 1989The 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 +3 more
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Statistical Emission in Nuclear Reactions and nuclear level density
Il Nuovo Cimento, 1961The statistical model in nuclear reactions has been developed extensively in the past decades, mainly by V. Weisskopf. However a clear understanding of the experimental situation regarding low and medium energy nuclear reaction is not yet settled. The interpretation is complicated by the fact that often the reactions proceed via other mechanisms, for ...
E. Erba +2 more
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Nuclear level densities and level spacing distributions
1986Extensive 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 +2 more
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NUCLEAR LEVEL DENSITY PARAMETER WITH YUKAWA FOLDED POTENTIAL
International Journal of Modern Physics E, 2007The average dependence of the single-particle level-density parameter on mass number A, isospin and deformation is determined using the Yukawa folded mean-field potential for spherical and deformed nuclei at temperatures 0 ≤ T ≤ 5 MeV and elongations ranging from oblate shapes to the scission configuration of fissioning nuclei.
Krzysztof Roman Pomorski +2 more
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Isospin and nuclear level density
Nuclear Physics A, 1968Abstract 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, 1978For 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 +2 more
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Nuclear Level Densities in Astrophysics
1980The use of statistical nuclear level densities in astrophysics is briefly reviewed. Particular attention is given to the role of nuclear level density formulae in cross-section calculations for nucleosynthesis studies and to the effects of an assumed Fermi-gas model upon the properties of matter at very high temperature. The use of β-strength functions
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