Shape mixing dynamics in the low-lying states of proton-rich Kr isotopes

Abstract

We study the oblate-prolate shape mixing in the low-lying states of proton-rich Kr isotopes using the five-dimensional quadrupole collective Hamiltonian. The collective Hamiltonian is derived microscopically by means of the CHFB (constrained Hartree-Fock-Bogoliubov) + Local QRPA (quasiparticle random phase approximation) method, which we have developed recently on the basis of the adiabatic self-consistent collective coordinate method. The results of the numerical calculation show the importance of large-amplitude collective vibrations in the triaxial shape degree of freedom and rotational effects on the oblate-prolate shape mixing dynamics in the low-lying states of these isotopes.

29 pages, 14 figures

References in corpus (4)

• Beyond the relativistic mean-field approximation (III): collective Hamiltonian in five dimensions
• Shape coexistence in neutron-deficient Kr isotopes: Constraints on the single-particle spectrum of self-consistent mean-field models from collective excitations
• Microscopic description of oblate-prolate shape mixing in proton-rich Se isotopes
• Microscopic Derivation of Collective Hamiltonian by Means of the Adiabatic Self-Consistent Collective Coordinate Method

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• Proton removal from ${}^{73,75}$Br to ${}^{72,74}$Se at intermediate energies