High-spin levels of 189Pt have been studied with the in-beam γ-spectroscopy method via the 176Yb(18O,5n) reaction at the beam energies of 88 and 95 MeV. The previously known vi13/2-1 band has been confirmed, and its unfavored signature branch extended up to the 31/2+ state. Within the framework of the triaxial particle-rotor model, the vi13/2-1 band is suggested to be associated with the 11/2 configuration, and to have triaxial deformation.
GUO Ying-Xiang(Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China)
Oshima M.,Toh Y.,Koizumi M.,Osa A.,Hatsukawa Y.(Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan)
QI Bin,ZHANG Shuang-Quan,MENG Jie(School of Physics, and State-Key Lab. Nucl. Phys. & Tech., Peking University, Beijing 100871, China)
Sugawara M.(Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan)
标签：Study,vi13,band
