Level structure in the transitional nucleus 195Au

Excited states in Au-195 have been studied experimentally via the Os-192(Li-7, 4n) reaction at a beam energy of 44 MeV. Based on the gamma-gamma-t coincidence measurement, a level scheme consisting of 15 new transitions and 10 new levels is established for Au-195. The triaxial shape-polarizing effect of the high-j h(11/2) proton hole was studied by total Routhian surface calculations. By comparing with the level structures in the odd-A Au isotopes and the even-even core Hg nuclei, configurations are proposed to the rotational bands and three-quasiparticle states observed in Au-195.