Abstract
The lifetimes of the excited states belonging to the chiral-candidate doublet bands built on the configuration in have been measured by applying the Doppler-shift attenuation method and the in-beam fast timing technique. Excited states were populated in the reaction at a bombarding energy of 54 MeV. The bandhead of the yrast band was identified as an isomeric state with a lifetime of . Similar reduced transition probabilities and were found for the states with the same spin in the partner bands. The results revealed an even-odd spin dependence in the values, whereas the values vary nearly monotonically with increasing spin. The experimental properties of the doublet bands in are compared with theoretical calculations done in the frame of the two-quasiparticles-plus-triaxial-rotor model. The static chirality is not supported by the obtained data; however, chiral vibrations cannot be excluded.
2 More- Received 2 August 2018
DOI:https://doi.org/10.1103/PhysRevC.98.054305
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