signature=cb82c091db06fa79a186fd76d144c804,Signature splitting and magnetic rotation in 86Y

摘要：

Based on recent experimental data, the band structure of the odd-odd nucleus Y has been studied. The positive-parity yrast band built on the configuration πgνgshows a large signature splitting, and a signature inversion occurs at I13. The signature inversion is interpreted by the competition between single-particle and collective excitations in this nucleus. The negative-parity dipole band, which is probably connected with magnetic rotation, is assigned to the configurations πg(p/f)νgbefore and to πg(p/f)νgafter the alignment. Self-consistent titled axis cranking calculations based on relativistic mean-field theory are performed to interpret the rotational structure. Characteristic features of magnetic rotation are found for the negative-parity band.

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