Searches for Double beta exp + , beta exp + /EC and Double Electron-Capture Decays

摘要

Searches have been made for the beta exp + /EC and EC/EC decays of sup 58 Ni and for the beta exp + beta exp + , beta exp + /EC, and EC/EC decays of sup 106 Cd. No positive evidence for any of these decays has been found. We have established lower limits on the half lives of sup 58 Ni and sup 106 Cd against such decays approximately 200 times and 4 times greater, respectively, than previous limits. 22 references. (ERA citation 10:019450)