High-spin states in97,98Rh

High-spin states in {sup 97,98}Rh (Z=45) were populated via the {sup 65}Cu({sup 36}S,xn){sup 97,98}Rh (x=4,3) fusion-evaporation reactions. More than 40 additional transitions have been identified and placed in the decay schemes of these nuclei. The level scheme of {sup 97}Rh has been extended up to tentative spins of J{sup {pi}}=39/2{sup +},37/2{sup {minus}}, and the placement of some of the previously known transitions has been revised. The level structure of {sup 97}Rh indicates a single-particle nature and the observed levels are reproduced well by spherical shell-model calculations. The level scheme of {sup 98}Rh has been extended up to spins J{approximately}20{h_bar} and up to an excitation energy of {approximately}10 MeV. The low-spin structure of {sup 98}Rh (J{le}10{h_bar}), appears to indicate also a single-particle structure, as supported by the stretched coupling scheme [{sup 97}Rh(J{sup {prime}}){circle_times}{nu}(d{sub 5/2})={sup 98}Rh (J)]. {copyright} {ital 1998} {ital The American Physical Society}