Hybrid values of the intrinsic gyromagnetic ratio and the absolute values of the decoupling parameters have been found for two sets of approximately degenerate opposite-parity bands with $K={\frac{3}{2}}^{\pm }$ and $K={\frac{1}{2}}^{\pm }$ in ${}_{}{}^{227}{}_{}{}^{}\mathrm{Ac}$, as would be expected for intrinsic parity mixing in the single-particle states due to octupole deformation. These properties are able to test quantitatively the change in the Nilsson wave functions resulting from octupole deformation.

• Received 22 April 1983

DOI:https://doi.org/10.1103/PhysRevLett.51.359