Results 281 to 290 of about 543,786 (314)

Statistical Emission in Nuclear Reactions and nuclear level density

Il Nuovo Cimento, 1961
The 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, U. Facchini, E. Saetta Menichella   +2 more
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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.
openaire   +1 more source

Nuclear Level Densities

AIP Conference Proceedings, 2009
S. M. Grimes, A. Voinov, Jan Jolie, Andreas Zilges, Nigel Warr, Andrey Blazhev   +5 more
openaire   +1 more source

Nuclear Level Densities in Astrophysics

1980
The 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
openaire   +1 more source

Correlation of Nuclear Level Densities and Masses

AIP Conference Proceedings, 2006
Level density parameters for 310 nuclei between 19F and 251Cf have been determined for the Back Shifted Fermi Gas and the Constant Temperature models, by fitting both low energy discrete levels and the s‐wave neutron resoance spacings. The determined parameters have been found well correlated with quantites available from the mass tables, and simple ...
openaire   +1 more source

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
openaire   +1 more source

Nuclear energy density functionals from machine learning

Physical Review C, 2022
Z X Ren, P W Zhao, Xin-Hui Wu
exaly