It is shown that the ‘‘normal’’ and ‘‘decoupled’’ band-like structures recently observed in the nuclei ${}_{}{}^{133}{}_{}{}^{}\mathrm{Pr}$ and ${}_{}{}^{135}{}_{}{}^{}\mathrm{Pr}$ can be reproduced within the framework of a standard version of the particle-rotor model. In addition, several positive parity levels in ${}_{}{}^{135}{}_{}{}^{}\mathrm{Pr}$, to which no band assignment could be given earlier, are shown to be the members of two positive parity bands with opposite signatures based on the ${(3/2\mathrm{}}^{+}$[411] Nilsson orbital. The most interesting observation of the present work is the near total attenuation of the Coriolis interaction in the positive parity bands in ${}_{}{}^{135}{}_{}{}^{}\mathrm{Pr}$. It is suggested that this nucleus can be a very good testing ground for different versions of the particle-rotor models currently used by different workers.

• Received 25 June 1987

DOI:https://doi.org/10.1103/PhysRevC.37.370