Abstract
We identified γ transitions in several neutron‐rich nuclei near 132Sn produced in the spontaneous fission of 252Cf. These are of interest because they can test shell model calculations. These nuclei are 139Ba, 133,135Te, and 121,123Cd. Excited states in neutron‐rich 133Te exhibit four types of particle‐hole bands built on the known 334.3 keV isomer in 133Te. The yrast and near yrast particle‐hole states observed up to 6.2 MeV in 133Te have characteristics quite similar to those in 134Te. The band starting at 5.214 MeV is assigned as a neutron particle‐hole excitation of the double magic core nucleus, 132Sn and is a candidate for a tilted rotor band. Theoretical shell model calculations show good agreement with the experimental states up to 4.3 MeV. The new level scheme of 139Ba includes 11 new transitions and 10 new levels and is compared with the 83‐neutron isotone 135Te. In 135Te, a tilted rotor band, also, is proposed. Excited states built on the 11/2− isomeric states in neutron‐rich 121,123Cd are iden...
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