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

M. Matsuo, T. Døssing, B. Herskind, S. Frauendorf, E. Vigezzi, R. A. Broglia

nucl-tharXiv:nucl-th/9212015

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 Ex 800 keV above yrast, which represents the onset of rotational damping. Above Ex ≈ 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.

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