APPARATUS FOR THE STUDY OF FISSION-GAS RELEASE FROM NEUTRON-ACTIVATED FUELED GRAPHITE

摘要

A simple laboratory apparatus for the study of fission-gas release from neutron-activated fueled graphite was developed. Xenon-133 released from a heated specimen is carried in a helium sweep gas to a charcoal trap, where the accumulated activity is monitored continuously by a scintillation detector, rate meter, and pen recorder. The maximum specimen temperature (2500 F) is achieved in 10 min with an induction heater. All instrumentation is commercially available.nData for several neutron-activated fueled-graphite specimens heated in the range from 800 to 2500 F are presented to illustrate the typical results obtained with the apparatus.