Shapes of odd-odd Pr nuclei

Recent experimental data on positive-parity yrast states, based on πh11/2 circle-times νh11/2 configuration, of odd-odd 132,134,136,138Pr nuclei have been analyzed in a systematic way with the energies and transition probabilities calculated within the framework of two quasiparticles coupled to an axially symmetric core model. It is found that very good agreement is obtained in 132Pr assuming a prolate deformation. For 134,136Pr also our calculation favors a prolate shape up to a quite high spin. Theoretical electromagnetic transition properties for both positive and negative deformation have been predicted for 138Pr. copyright 1996 The American Physical Society