100Ciトリチウム実験装置の性能試験(2) : 水素同位体分離部

概要

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A tritium experimental system for 100 Ci/run was established at the Hydrogen Isotope Research Center, Toyama University. The system has two distinct experimental chambers: a tritium circulation system and an exhaust-gas detritiation device. The former consists of tritium storage, purification and gas chromatographic hydrogen isotope separation units. The performance of the isotope separation unit was examined for 20 Pa･ｌ, a sample gas mixture containing protium, deuterium and tritium under the conditions of operation temperature at 77 K and carrier-gas (Ne) flow of 50 cc/min. Six isotope compounds of hydrogen were reproducibly separated within an adequate period of time (within 5000 seconds). In addition, the relative sensitivities of the thermal conductivity detector could be determined in-situ with the aid of an ionization chamber for detecting tritiated hydrogen isotope molecules