Wobbling excitations at high spins in A~160

Abstract

We found that in 156Dy and 162Yb the lowest odd spin gamma-vibrational states transform to the wobbling excitations after the backbending, associated with the transition from axially-symmetric to nonaxial shapes. The analysis of quadrupole electric transitions determines uniquely the sign of the gamma-deformation in both nuclei after the transition point.

6 pages, 4 figures

References in corpus (6)

• Microscopic Structure of High-Spin Vibrational Excitations in Superdeformed 190,192,194Hg
• Nuclear Wobbling Motion and Electromagnetic Transitions
• Nuclear moments of inertia and wobbling motions in triaxial superdeformed nuclei
• Gross shell structure at high spin in heavy nuclei
• Microscopic analysis of shape-phase transitions in even-even N~90 rotating nuclei
• Backbending and $Gamma$-Vibrations

Cited by in corpus (2)

• Parametrizations of triaxial deformation and E2 transitions of the wobbling band
• Quasiparticle and $\gamma$-band structures in ${}^{156}$Dy