The reflection asymmetric phase transition in nuclei at high angular momentum is analyzed in the framework of the cranked Hartree-Fock-Bogoliubov approximation, with the Gogny interaction, using approximate parity projection before variation. The $N=88\mathrm{}$ isotones are studied and our results compared with experimental data. Good agreement is found for the energy splitting of the even and odd parity states and $B\left(E1\mathrm{}\right)$ transition probabilities. Differences on intrinsic deformations, dipole moments, and pairing energies between odd and even parity states found at low spin disappear with increasing angular momentum.

• Received 28 October 1997

DOI:https://doi.org/10.1103/PhysRevLett.80.4398