Physics – Nuclear Physics
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..561..388k&link_type=abstract
TOURS SYMPOSIUM ON NUCLEAR PHYSICS IV: TOURS 2000. AIP Conference Proceedings, Volume 561, pp. 388-398 (2001).
Physics
Nuclear Physics
Collective Models, Shell Model, Properties Of Nuclei, Nuclear Energy Levels
Scientific paper
The nuclear mass formula which was recently constructed by the author and his collaborators is used to study heavy and superheavy nuclei. The most distinctive characteristic of this formula is that the shell energy of a deformed nucleus is expressed as an appropriate mixture of spherical shell energies added to an average deformation energy. This mass formula gives ground-state masses and shapes of nuclei ranging from light nuclei (Z>=2,N>=2) to superheavy nuclei. In the region of superheavy nuclei, the shell energies of this mass formula show a few magic numbers, which are not so pronounced as in 132Sn and 208Pb. The α-decay Q-values are calculated, and the α-decay half-lives are estimated with use of a phenomenological formula. These results are compared with experimental data and other predictions. The potential energy surface for fission can be calculated by the same method as used for obtaining the shell energies. Based on these energy surfaces, the spontaneous fission is discussed for some selected superheavy nuclei. .
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