BAND STRUCTURES OF I-121,I-123

The band structures of I-121,I-123 nuclei have been studied using a ve rsion of the particle-rotor-model in which the experimental excitation energies of the neighbouring (A-1) cores can be fed directly as input parameters. The calculations have been carried out with axially symme tric Nilsson potential with both prolate and oblate deformations. The parameters of the model have been chosen from earlier theoretical work and experimental odd-even mass differences. Only the Coriolis attenua tion factor has been treated as adjustable parameter. The theoretical band structures are in very good agreement with the available experime ntal data.