A New Level Scheme Of I-127

Study of in-beam gamma-ray spectroscopy of I-127 has been performed using Sn-124(Li-7, 4n)I-127 reaction at 32 MeV beam energy. A new level scheme of I-127 has been established including 25 new levels and 52 new gamma transitions. Negative-parity levels based on 11/2(-) pih(11/2) particle state have been observed up to (35/2(-))extending our knowledge of decoupled structures to the heavier iodine isotope. Two DeltaI = 2 yrast positive-parity levels have been proposed to be associated mainly with the pig(7/2) configuration due to observations of several strong inter-hand transitions. Two weakly populated DeltaI = 2 positive-parity levels and a high-lying DeltaI = 1 cascade have been newly identified and tentatively assigned as pid(5/2) one-quasiparticle and three-quasiparticle bands, respectively.