gum - QPacte) Project 21.3 - Short Half-life Activities - F. Momyer Project 21.3 was engaged in finding total tritium in the cloud. was done in the following manner: This Carrier amounts of heavy water, krypton and xenon were added to the collection bottles prior to the program. The collection system consisted of filters for particulate matter and collection bottles mounted on the sampling planes. Gas semples were collected at various altitudes and times following the detonation and returned to Parry for separation. Krypton, xenon, water and carbon dioxide were separated from the gas sample and molybdenum was separated from the filter sample. Krypton, xenon and molybdenum were collected to determine fissions per collection tottle. The remaining activities, cl4 and H? were returned to the laboratory, as barium carbonate and water for the determination of total tritium and possibly cl4 yield. The fission bottle data are shown in Table 21,31. Tl Ge RY Nr - 40-

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