Octupole softness of superdeformedPb194

Using parity projection and the generator-coordinate method we investigate the left-right-asymmetric softness of the superdeformed minimum of ${}_{}{}^{194}{}_{}{}^{}\mathrm{Pb}$. The collective wave functions exhibit large octupole dipsersions. Our calculation suggests that above the ground-state superdeformed band there should exist a negative-parity band of similar quadrupole deformation with an excitation energy close to 2 MeV.