Abstract
We study the low-lying energy spectrum of the rp-process waiting point nucleus Zr80 with state-of-the-art beyond mean field methods with the Gogny D1S interaction. Symmetry restoration and configuration mixing of axial and triaxial shapes are included in the calculations. Five 0+ states corresponding to different nuclear shapes are obtained below 2.25 MeV and several rotational and γ-bands built upon them are identified. Nevertheless, these states do not modify the β-decay half-life having a negligible effect in the rp-process. A good agreement with the available experimental data is obtained.
Highlights
We study the low-lying energy spectrum of the rp-process waiting point nucleus 80Zr with state-of-the-art beyond mean field methods with the Gogny D1S interaction
There are calculations with these interactions including beyond mean field effects, like axial angular momentum projection [22] with additional mixing of axial shapes [23], parity projection[24] and in the framework of the collective Hamiltonian [25]
For the description of shape coexistence several ingredients are required such as the triaxial shapes with the corresponding angular momentum projection and shape mixing [26], and, the particle number projection [27]
Summary
We study the low-lying energy spectrum of the rp-process waiting point nucleus 80Zr with state-of-the-art beyond mean field methods with the Gogny D1S interaction. There are calculations with these interactions including beyond mean field effects, like axial angular momentum projection [22] with additional mixing of axial shapes [23], parity projection[24] and in the framework of the collective Hamiltonian [25].
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