Persistent vibrational structure in ${}^{110-116}$Cd

Abstract

The empirical spectra and $E2$ decay rates in ${}^{110,112,114,116}$Cd are shown to be consistent with a vibrational interpretation for low-lying normal states, coexisting with a single deformed $\gamma$-soft band of intruder states. The observed deviations from this paradigm show up in particular non-yrast states, which are properly described by a Hamiltonian with U(5) partial dynamical symmetry. The latter is characterized by a good (broken) symmetry in most (in selected) normal states, weakly coupled to intruder states.

arXiv comment5 pages, 3 figures, 2 tables, accepted for publication as a Letter in Phys. Rev. C

References in corpus (7)

• Nuclear shape coexistence: A study of the even-even Hg isotopes using the interacting boson model with configuration mixing
• Partial Dynamical Symmetries
• Quadrupole Phonons in the Cadmium Isotopes
• Zr Isotopes as a region of intertwined quantum phase transitions
• Structure of even-even Cadmium isotopes from the beyond-mean-field interacting boson model
• Nuclear shape coexistence in Po isotopes: An interacting boson model study
• Shape coexistence in Sr isotopes

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