Abstract
Particle- and coincidence measurements on the reaction were performed to determine the decay schemes of the bound excited states of . Branching ratios for the decay of the second excited state (1.67 MeV) to the ground state and first excited state (0.953 MeV) were determined to be (96.8±0.5) and (3.2±0.5)%, respectively. The 2.62-MeV third excited state was found to decay to the ground state with a branch of (6±1)%, and also to the first and second excited states with branches of (80±3) and (14±3)%, respectively. The last two values are from a coincidence measurement of the 2.62→1.67→0.95→0 triple cascade. Ge(Li) measurements of the 2.62→0.95 transition energy yield a value of 2620.8±1.2 keV for the excitation energy of the initial state. A lower limit on the ground-state decay of the 2.723-MeV level of >85% was determined from coincidence measurements. These results are combined with previously available information on lifetimes, spins, and parities to permit a comparison with the shell-model predictions for the electromagnetic transitions connecting the bound levels of .
- Received 13 October 1967
DOI:https://doi.org/10.1103/PhysRev.166.1004
©1968 American Physical Society