Abstract
The branching ratio has been measured for the 15.11-MeV state in . The result is %, in agreement with one previous measurement and in disagreement with another. The result was obtained by direct observation of the decay particles from the reaction . The data are consistent with a sequential decay via the first excited state of . The breakup of the state at MeV was also studied. The data in both cases were fitted with a model in which the final state interaction was treated as a simple Breit-Wigner resonance; order-of-emission interference effects were included. If the (isospin-forbidden) width is interpreted as resulting from mixing between the two states via a charge-dependent interaction, a large isospin-violating matrix element is involved.
NUCLEAR REACTIONS , MeV, coincidence, deduced for 15.11-MeV level of .
- Received 16 May 1974
DOI:https://doi.org/10.1103/PhysRevC.10.975
©1974 American Physical Society