Search for positive parity bands in 117Xe

Abstract Excited states of 117 Xe were populated via the reaction 28 Si + 92 Mo at 100–120 MeV. More than 40 new γ-transitions and three new positive parity bands have been obverved by means of in-beam γ-ray spectroscopy. The previously known ν h 11 2 bands were confirmed, and the ν g 7 2 favored band was extended up to 47 2 + in which two bandcrossings have been observed at h ω =0.33 and 0.44 MeV, respectively. The band structures have been discussed by means of TRS and CSM calculations. A newly observed rotational band consisting of five γ-transitions has been considered as the π h 11 2 band of 117 Cs.