Chaotic Behavior in Warm Deformed Nuclei Induced by Residual Two-Body Interactions

Abstract

Band mixing calculations in rapidly rotating well-deformed nuclei are presented, investigating the properties of energy levels and rotational transitions as a function of excitation energy. Substantial fragmentation of E2 transitions is found for $E_x\text{gsim}$ 800 keV above yrast, which represents the onset of rotational damping. Above $E_x\approx$ 2 MeV, energy levels and E2 strengths display fluctuations typical of quantum chaotic systems, which are determined by the high multipole components of the two-body residual interaction.

Comments: 7 pages, phyzzx, YITP/K-1001