Rotational and vibrational states in 115 Te

High-spin states of the 115 Te were studied by in-beam spectroscopy with the 89 Y ( 29 Si, p 2 n ) fusion-evaporation reaction at a beam energy of 108 MeV. γ−γ coincidence and γ−γ angular correlation analyses were employed for determining the level scheme of 115 Te. We have identified two vibrational-like bands built on the νh 11/2 and νg 7/2 quasiparticle states and the noncollective oblate states from the full alignment of quasiparticle configurations. In addition, a regular Δ I = 2 sequence with positive-parity was found for the first time in odd- A Te nuclei. This sequence is interpreted as a deformed structure resulting from three-quasiparticle alignment having the [π(g 7/2 , h 11/2 ) ⊗ ν( h 11/2 )] configuration. Calculations of total Routhian surfaces and cranked shell model were performed and were used for assigning quasiparticle configurations to the states in 115 Te.