Tests of collectivity in ${}^{98}$Zr by absolute transition rates

Abstract

Lifetimes of low-spin excited states in ${}^{98}$Zr were measured using the recoil-distance Doppler-shift technique and the Doppler-shift attenuation method. The nucleus of interest was populated in a ${}^{96}$Zr(${}^{18}$O,${}^{16}$O)${}^{98}$Zr two-neutron transfer reaction at the Cologne FN Tandem accelerator. Lifetimes of six low-spin excited states, of which four are unknown, were measured. The deduced $B(E2)$ values were compared with Monte Carlo shell model and interacting boson model with configuration mixing calculations. Both approaches reproduce well most of the data but leave challenging questions regarding the structure of some low lying states.

arXiv comment13 pages, 12 figures, 3 tables, accepted for publication in Physical Review C

References in corpus (8)

• Novel features of nuclear forces and shell evolution in exotic nuclei
• Quantum Phase Transition in the Shape of Zr isotopes
• First Measurement of Collectivity of Coexisting Shapes based on Type II Shell Evolution: The Case of ${}^{96}$Zr
• Predicting the production of neutron rich heavy nuclei in multi-nucleon transfer reactions using GRAZING-F
• The quest of shape coexistence in Zr isotopes
• Intertwined Quantum Phase Transitions in the Zr Isotopes
• Evidence for coexisting shapes in ${}^{98}$Zr through lifetime measurements
• Interplay between shape-phase transitions and shape coexistence in the Zr isotopes

Cited by in corpus (3)

• Zr Isotopes as a region of intertwined quantum phase transitions
• Shape evolution in even-mass ${}^{98-104}$Zr isotopes via lifetime measurements using the $\gamma \gamma$-coincidence technique
• The pervasiveness of shape coexistence in nuclear pair condensates