Abstract
Searches have been made for the /electron-capture-type double decays of , , , and and for the double decay of . The sought-for signature of such decays was the emission of coincident back-to-back 511-keV annihilation gamma rays from the sample under study. No positive evidence of any of these decays was observed. However, from these experiments, improved lower limits on the half-lives of these nuclei against such decays have been established.
- Received 28 January 1985
DOI:https://doi.org/10.1103/PhysRevC.31.1937
©1985 American Physical Society