Fission Fragment Isomers Populated via 6Li + 232Th

Short-lived isomers in fission fragments following bombardment of 45-MeV 6Li on 232Th were examined. Isomers in the A~95, 122 and 132 mass regions were observed. New isomeric decays were observed in 121In (T1/2 = 17(2) us), 123In (T1/2 > 100 us) and 125Sb (T1/2= 25(4) us). These isomers are suggested to arise from n(h11/2 x d3/2)7- and n(h11/2 x s1/2)5- neutron core excitations coupling with the valence proton.