Shell energy and the level-density parameter of hot nuclei
- Institute of Physics, Maria-Curie-Sklodowska University, PL-20031 Lublin (Poland)
- Institut Pluridisciplinaire Hubert Curien and Universite Louis Pasteur, F-67070 Strasbourg (France)
Macroscopic-microscopic calculations have been performed with the Yukawa folded mean field for 134 spherical even-even nuclei and 6 deformed ones at temperatures 0{<=}T{<=}5 MeV and elongations ranging from oblate shapes to the scission configuration of fissioning nuclei. The Strutinsky type free-energy shell corrections for this sample of nuclei and their temperature and deformation dependence are found by a folding procedure in particle-number space. The average dependence of the single-particle level-density parameter on mass number A and isospin I is determined and compared with previous estimates obtained using the relativistic mean-field theory, the Hartree-Fock approximation with the Skyrme effective interaction, and the phenomenological Thomas-Fermi approach adjusted to experimental data. The estimates for the level-density parameter obtained for different deformations are fitted by a liquid-drop type expression.
- OSTI ID:
- 20863799
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 74, Issue 3; Other Information: DOI: 10.1103/PhysRevC.74.034327; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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