Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2001-03-23
Phys.Rev. C64 (2001) 037301
Physics
Nuclear Physics
Nuclear Theory
4 pages, REVTEX, 1 postscript figure. Color figure available at http://mocha.phys.washington.edu/~int_talk/WorkShops/int_00_3/
Scientific paper
10.1103/PhysRevC.64.037301
The origin of the dominance of prolate shapes over oblate ones of the ground states of atomic nuclei is investigated with the Nilsson-Strutinsky method. The number of prolate nuclei among all the deformed even-even nuclei is calculated as a function of the strengths of the spin-orbit and the l^2 terms of the Nilsson potential. The latter simulates a square-well like radial profile of the mean potential. The ratio of prolate nuclei is 86% with the standard strengths corresponding to the actual atomic nuclei. By weakening the spin-orbit potential, the ratio oscillates strongly, having a local minimum value of 45% with a half of the standard strength and a local maximum value of 78% without the spin-orbit potential.
Suzuki Norifumi
Tajima Naoki
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