Abstract
Following the identification of the lowest-spin member of the two-phonon octupole quartet in the additional members of the multiplet have been sought with the reaction. Based on energy arguments and transition probabilities determined from Doppler-shift lifetime measurements, the 5286- and 5216-keV states are suggested as candidates for the and two-phonon octupole excitations in The difficulties of identifying the member of this quartet are examined.
- Received 25 September 1997
DOI:https://doi.org/10.1103/PhysRevC.57.R2085
©1998 American Physical Society