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.

arXiv comment29 pages, 14 figures

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• Finite-amplitude method for collective inertia in spontaneous fission
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• Shape coexistence and evolution in neutron-deficient krypton isotopes
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• Gauge Symmetry in the Large-amplitude Collective Motion of Superfluid Nuclei
• Triaxial-shape dynamics in the low-lying excited $0^{+}$ state: Role of the collective mass
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• Proton removal from ${}^{73,75}$Br to ${}^{72,74}$Se at intermediate energies
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