Evidence is presented for the existence of odd-even staggering in $K^{\mathrm{-}}$ rotational bands (with K>0) of odd-odd nuclei in the rare-earth and actinide regions. Coriolis-coupling calculations have been carried out for rotational bands in ${}_{}{}^{168}{}_{}{}^{}\mathrm{Tm}$, ${}_{}{}^{176}{}_{}{}^{}\mathrm{Lu}$, ${}_{}{}^{182}{}_{}{}^{}\mathrm{Ta}$, and ${}_{}{}^{182}{}_{}{}^{}\mathrm{Re}$. With these calculations, we are able to reproduce the odd-even staggering observed in these nuclei. In particular, the unusually strong staggering observed in the K${=2\mathrm{}}^{+}$ and $4^{\mathrm{-}}$ bands of ${}_{}{}^{182}{}_{}{}^{}\mathrm{Re}$ can be understood. Unusual features in the wave functions of some bands reflect the importance of couplings due to terms other than Coriolis in the Hamiltonian.

• Received 3 March 1989

DOI:https://doi.org/10.1103/PhysRevC.40.432