: @ Project 21.3 - Short Half-life Activities - P. Monyer pose? Another phase of Project 21.3 was engapred in finding total tritiu in the cloud. . This vas done in the following manner: Carricr amounts of heavy water, krypton and zenon were added to the collection bottles prior to the program, The collection system consisted of filters for particulate matt-r and collection bottles mounted on the sampling planes. Cas samples were collected at various altitudes and times following the detonation and returned to Parry for separation, MKryptcr, xenon, water and carton dioxide were separated fror the gas sazple and molybdenum was separated from the filter sample. Krypton, xenon and molytdenur were collected to determine fiesione per collection bo*tie, The remaining activities, cl4 gna 43 were returned to the laboratory, as barium carbonate and water for the deter- mination of tota) tritium and poanthly C24 yield, The fission bottle data are shown in Table 21,3-l. , @ wm eres ease ee : & FR “ay Fe woe i