Periodic-orbit bifurcations as the origin of nuclear deformations

Abstract

Semiclassical analysis of shell structures in realistic nuclear potentials are presented using periodic-orbit theory. We adopted r^alpha potential model and examined classical-quantum correspondence using Fourier transformation technique. Spin-orbit coupling is also taken into account in the model Hamiltonian. Gross shell structure for a certain combination of surface diffuseness and spin-orbit parameters are investigated and its relation to pseudospin symmetry is discussed. Analysis of superdeformed shell structure in realistic model is also presented.

Comments: 5 pages, 5 figures, talk given at the Int. Conf. on "Finite Fermionic Systems: Nilsson Model 50 Years", Lund, Sweden, June 14-18, 2005, submitted to Physica Scripta