In-beam spectroscopy of medium- and high-spin states in ${}^{133}$Ce

Abstract

Medium and high-spin states in ${}^{133}$Ce were investigated using the ${}^{116}$Cd(${}^{22}$Ne, $5n$) reaction and the Gammasphere array. The level scheme was extended up to an excitation energy of $\sim 22.8$ MeV and spin 93/2 . Eleven bands of quadrupole transitions and two new dipole bands are identified. The connections to low-lying states of the previously known, high-spin triaxial bands were firmly established, thus fixing the excitation energy and, in many cases, the spin parity of the levels. Based on comparisons with cranked Nilsson-Strutinsky calculations and tilted axis cranking covariant density functional theory, it is shown that all observed bands are characterized by pronounced triaxiality. Competing multiquasiparticle configurations are found to contribute to a rich variety of collective phenomena in this nucleus.

arXiv comment20 pages, 11 figures

References in corpus (5)

• New parametrization for the nuclear covariant energy density functional with point-coupling interaction
• Progress on tilted axis cranking covariant density functional theory for nuclear magnetic and antimagnetic rotation
• Novel structure for magnetic rotation bands in 60Ni
• Evidence for Multiple Chiral Doublet Bands in ${}^{133}$Ce
• Impact of pairing correlations on the orientation of the nuclear

Cited by in corpus (1)

• Harmonic chiral vibration in triaxial nuclei