Abstract
The radioactive decay half-life of the β−-emitter 111Ag has been measured using decay transitions identified using a high purity germanium γ-ray spectrometer. The time series of measurements of the net peak areas of the 96.8keV, 245.4keV and 342.1keV γ-ray emissions following the β− decay of 111Ag were made over approximately 23 days, i.e. ~3 half-life periods. The measured half-life of the ground state decay of 111Ag was determined as 7.423 (13) days which is consistent with the Evaluated Nuclear Structure Data File (ENSDF) recommended half-life of 7.45 (1) days at k=2. Utilising all available experimental half-life values, a revised recommended half-life of 7.452 (12) days has been determined.
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