Abstract
The ground state proton decays of and have been searched for in and bombardments of a natural calcium target. These studies employed a newly developed rapidly rotating recoil-catcher wheel and a low-energy particle-identification telescope. No proton groups that could be assigned to either of these nuclides were observed. The minimum detectable limits indicate that and either decay predominantly by beta emission or have half-lives less than 100 μs. The overall evidence strongly indicates that predominantly beta decays.
- Received 19 July 1990
DOI:https://doi.org/10.1103/PhysRevC.42.1922
©1990 American Physical Society