Abstract
The -pair decay branching ratio () for the 1.84-MeV () and 1.88-MeV () second excited states of and were measured. The states were excited by proton inelastic scattering. pairs from the decay were stopped in a carbon cylinder and the resulting annihilation radiation was detected in two NaI(T1) detectors in triple coincidence with backscattered protons. The observed branching ratios are (0.88±0.14) × and (2.05±0.17) × for and , respectively, corresponding to monopole strengths of and . These results are consistent with a theoretical description of these states which includes large admixtures of deformed state wave functions.
NUCLEAR REACTIONS , MeV; measured branching ratio. Deduced strength. Enriched targets.
- Received 28 August 1975
DOI:https://doi.org/10.1103/PhysRevC.13.536
©1976 American Physical Society