A Unified Description of Spectra of Different Configurations, Deformation and Energy Regions

Abstract

The multiconfigurational dynamical symmetry (MUSY) is applied for the unified description of the spectra of Ne, Si, Ar, and Ti nuclei. They contain shell-like configurations in the ground-state region, core-plus-alpha states above the alpha-separation energy, and exotic cluster states from heavy-ion reactions. The excitation energy and the quadrupole deformation cover large ranges. The gross features of the spectra are reasonably well reproduced by a simple Hamiltonian, in some cases even parameter-free predictions are obtained for high-lying cluster spectra from the low-lying quartet bands in good agreement with experimental observation.