Abstract
The reactions and have been used to study the -ray branching of states at 6.92, 7.12, 8.88, and 13.10 MeV. Measurements were made with two 5×6-in. and two 3×3-in. NaI (Tl) detectors in various coincidence combinations. Two-dimensional pulse-height analysis was employed in some cases. The -ray branches from the MeV states to the -MeV level were found to be ≤ 8 × and (7.0±1.4) × , respectively. For the -MeV level the branches to the 7.12-, 6.92-, 6.13-MeV, and ground states are (12.6±2.0)%, (4.2±0.8)%, (76.0±3.0)%, and (7.2±0.8)%, respectively. The branch, 13.10 → 6.06 MeV, was observed to have an intensity of (5.8±1.2) × , corresponding to a of 0.037 relative to that of the ground-state transition. The significance of the various results in the description of states in is discussed.
- Received 13 May 1968
DOI:https://doi.org/10.1103/PhysRev.173.995
©1968 American Physical Society