Deformation and shape changes in 167W.

Authors :: Li, C. B.
Ma, H. L.
Wu, X. G.
Chen, Q. M.
He, C. Y.
Zheng, Y.
Li, G. S.
Wu, Y. H.
Hu, S. P.
Li, H. W.
Luo, L. P.
Zhong, J.
Zhu, B. J.
Source :: Physical Review C. Oct2016, Vol. 94 Issue 4, p1-1. 1p.
Publication Year :: 2016
Abstract: Lifetime measurements of yrast levels in 167W were measured using the recoil-distance Doppler-shift method. The differential decay-curve method was applied for a lifetime determination. Excited states of the nucleus 167W were populated by the reaction 142Nd (28Si28, 3n) at a beam energy of 144 MeV. The energy spectra and measured transition quadrupole moments inferred from the lifetimes of 167W are compared with the predictions of the cranked Nilsson-Strutinsky-Bogoliubov calculations. The changes of deformations and shapes with increasing spin due to the γ-polarization effect of aligned particles are discussed. The signature inversion visible in the negative parity yrast band is explained to be related to the triaxial shapes. [ABSTRACT FROM AUTHOR]