RETENTION EFFICIENCIES OF CHARCOAL TRAPS FOR FISSION GASES

摘要

An investigation has been undertaken to determine the efficiency of certain charcoal traps for tracer quantities of fission product gases in the presence of macro quantities of a nonisotopic purge, or carrier, gas. The investigation included obser¬vation of the effects of charcoal particle size, trap temperature, and carrier gas flow rate on the retention times of the tracer gases in the traps. The main emphasis of these studies was to determine the behavior of xenon and krypton under the experimental conditions, but a limited number of experiments were performed using radioactive iodine as the tracer.