Abstract
Angular distributions have been measured for the reaction to levels up to 10.80-MeV excitation in . Distorted-wave Born-approximation fits have been obtained to most of these levels and absolute spectroscopic factors have been extracted. Although the spectroscopic factors for the low-lying , doublet at 5.27, 5.30 MeV are very small, those for the next four positive-parity levels are close to the single-particle value of 1. To explain these features a weak-coupling model is proposed, in which an or particle is coupled to a core corresponding to the , ground state of or to the , first excited state. Explicitly included in the model is the splitting due to the T·t force, which accounts for the low-lying position of the , doublet.
- Received 13 January 1969
DOI:https://doi.org/10.1103/PhysRev.184.1052
©1969 American Physical Society