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Study of the νi_(13/2)~(-1) band in ~(189)Pt

滑伟  周小红  张玉虎  郭应祥  Oshima M.  Toh Y.  Koizumi M.  Osa A.  Hatsukawa Y.  亓斌  张双全  孟杰  Sugawara M.  
【摘要】: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 νi-131/2 band has been confirmed, and its unfavored signature branch extended up to the 13/2+ state. Within the framework of the triaxial particle-rotor model, the νi-113/2 band is suggested to be associated with the 11/2[615] configuration, and to have triaxial deformation.

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