Abstract
We have performed a search for the decay of by looking for back-to-back 511-keV γ rays in two high-purity Ge detectors. No excess of events above background was observed, and a limit of 5.7×% has been established for the branch. The significance of this result for the use of as a cosmic ray chronometer is discussed.
- Received 5 August 1993
DOI:https://doi.org/10.1103/PhysRevC.48.3110
©1993 American Physical Society