Abstract
About 50 levels of below 3.2 MeV have been studied with 9- to 15-keV resolution via the , , and reactions. Angular distributions were taken (at 16 MeV) for the reactions and (at 17 MeV) for . () and () values were extracted by comparison with distorted-wave Born-approximation calculations. For most of the levels seen, direct-reaction selection rules lead to narrow limits for the final-state spins, and in a few cases to unique assignments. The spectroscopic information for the lowest levels was compared with shell-model predictions, and qualitative agreement was found. The lowest negative-parity states seen were above 2 MeV. Little strength was found in the pickup experiments, and strong suppression of () transitions to states suggests that the low-lying states of are predominantly of configuration. However, a comparison with the () spectrum for the particle-hole conjugate nucleus shows that these nuclei are more dissimilar than a simple model would suggest.
- Received 16 December 1970
DOI:https://doi.org/10.1103/PhysRevC.3.1989
©1971 American Physical Society