Abstract
High-spin states in the cross-conjugate pairs of nuclei and have been investigated using the reaction at a laboratory energy of 125 MeV. Coincidence spectra, in some cases gated by charged particle detection, allow the yrast level schemes of all four nuclei to be extended, up to the -shell band termination at and in and and beyond to and in and Opposite-parity bands in and were observed up to and respectively. Lifetimes derived from DSAM measurements provide and values for transitions among the higher levels of each of the nuclei. These are compared with earlier measurements and with - and -shell model calculations. No model calculations have been published for the opposite-parity bands, but their level spacing and reduced transition rates support a spectator nature of the hole.
- Received 24 September 1997
DOI:https://doi.org/10.1103/PhysRevC.58.808
©1998 American Physical Society