16. Approximately how many Bq would be needed to produce an exposure rate of 10 mR/hr at 10 cm from a Cobalt-57 source?
Posted: Sat Feb 26, 2022 12:04 pm
16. Approximately how many Bq would be needed to produce an exposure rate of 10 mR/hr at 10 cm from a Cobalt-57 source? (Co-57 decays 86% of the time by emitting a 122 keV gamma ray).