Evidence is presented for the occurrence of a parity doublet as the ground state of , in agreement with a previous theoretical prediction. The doublet splitting energy is measured to be 0.22±0.05 keV. The relation of this doublet to ground-state octupole deformation is discussed.
- Received 18 August 1982
- Published in the issue dated 13 December 1982
© 1982 The American Physical Society