Results 241 to 250 of about 1,245,725 (288)
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Canadian Journal of Physics, 1982
Nuclear level densities are obtained by first calculating the density for non-interacting particles using the Darwin–Fowler method and then folding in approximately the effects of the residual two-body interaction. For the former, the equations resulting from the method of steepest descent are solved numerically with a realistic set of single particle
R. U. Haq, S. S. M. Wong
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Nuclear level densities are obtained by first calculating the density for non-interacting particles using the Darwin–Fowler method and then folding in approximately the effects of the residual two-body interaction. For the former, the equations resulting from the method of steepest descent are solved numerically with a realistic set of single particle
R. U. Haq, S. S. M. Wong
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Nuclear shell model and level density
International Journal of Modern Physics E, 2020The accurate knowledge of the nuclear level density is crucial for understanding the nuclear structure and for numerous applications including astrophysical reactions. In this review paper, we discuss the shell-model description of the nuclear level density, the use of the statistical moments method and underlying physics. The level density found with
Vladimir Zelevinsky, Sofia Karampagia
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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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DETERMINING NUCLEAR LEVEL DENSITIES
Capture Gamma-Ray Spectroscopy and Related Topics, 2003Nuclear level densities are important in many applications, including the study of nuclear structure far from stability and astrophysical studies of the r and p processes. Recent Shell Model Monte Carlo calculations appear promising as a method of calculating level densities and may provide improved physical understanding of the level density ...
G. E. MITCHELL +3 more
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Nuclear level densities at high excitations
Physical Review C, 1992We calculate level densities for {sup 20}Ne, {sup 40}Ca, and {sup 100}Ru nuclei using unrestricted uniform, single particle levels (Fermi gas) and for realistic levels restricted to those bound by centripetal and Coulomb forces. For the latter we use single particle levels due to Seeger, and results for a Woods-Saxon model.
, Mustafa, , Blann, , Ignatyuk, , Grimes
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NUCLEAR LEVEL DENSITY AT FINITE TEMPERATURES
International Journal of Modern Physics E, 2006Selfconsistent mean-field calculations have been performed with the SkM* Skyrme force for 140 spherical even-even nuclei at temperatures 0≤T≤4 MeV . Single-particle level densities for this sample of nuclei are determined for various temperatures. The average dependence of the single-particle level density on mass number A and isospin is given and ...
Bartel, J. +2 more
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SYSTEMATICS OF NUCLEAR LEVEL DENSITY PARAMETERS
Capture Gamma-Ray Spectroscopy and Related Topics, 2003The level density parameters for backshifted Fermi gas (both without and with energy-dependent level density parameter) and constant-temperature models have been determined for 310 nuclei between $^{18}\mathrm{F}$ and $^{251}\mathrm{Cf}$ by fitting of the complete level schemes at low excitation energies and s-wave neutron resonance spacings at the ...
Till von Egidy, Dorel Bucurescu
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Journal of Nuclear Science and Technology, 2002
Recent research in the area of nuclear level densities is reviewed. The current interest in nuclear astrophysics and in structure of nuclei off of the line of stability has led to the development of radioactive beam facilities with larger machines currently being planned.
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Recent research in the area of nuclear level densities is reviewed. The current interest in nuclear astrophysics and in structure of nuclei off of the line of stability has led to the development of radioactive beam facilities with larger machines currently being planned.
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Physical Review, 1957
By using the statistical methods originally due to Bethe, the predictions for the densities of nuclear energy levels at excitation energies around 8 Mev are examined for two different versions of the shell model. A crude method is used to take into account the effects of shell structure. The assumed form of the theoretical expression for the density of
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By using the statistical methods originally due to Bethe, the predictions for the densities of nuclear energy levels at excitation energies around 8 Mev are examined for two different versions of the shell model. A crude method is used to take into account the effects of shell structure. The assumed form of the theoretical expression for the density of
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Theory of Nuclear Level Density
Physical Review, 1954We have compared the level density of a nuclear model deduced from a statistical analysis with the results of the exact counting of the levels of the same model. The tables of levels of ${\mathrm{Ne}}^{20}$ given by Critchfield and Oleksa have been used as a test of the statistical theory. A new derivation of the level density is presented.
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