He3 Outgassing from Four Working Palladium and Uranium Beds
Fusion Science and Technology / Volume 14 / Number 2P2A / September 1988 / Pages 741-743
Tritium Properties and Interactions with Material / Proceedings of the Third Topical Meeting on Tritium Technology in Fission, Fusion and Isotopic Applications (Toronto, Ontario, Canada, May 1-6, 1988) / dx.doi.org/10.13182/FST88-A25223
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The He3 output from two palladium and two uranium beds that store T2 and D-T was studied as a function of time. Three of the beds were started new and watched for 1 yr; the fourth bed was 12 yr old. All four beds were used in routine tritium handling. Initial stoichiometries were PdT0.3 and UT0.7 so that both operated at similar pressures from 1 to 130 kPa. The He3 from palladium ranged from the 0.002 mol% lower level of sensitivity to 0.01% for Pd/T2 at 1 yr of age. The U/T system showed 0.1% He3 at 4 to 62 days and 0.1 to 10% at longer times, with the first cuts being high in He3. The palladium bed with 95 to 97% pure T2 enriches the output to as high as 97 to 99%.
