Out of Pile Tritium Release from Various Lithium Materials

摘要

Results of out of pile tritium release experiments from lithium compounds samples, irradiated for a short time in the OSIRIS reactor are presented. Within the attempt to enhance tritium release, a variant form of lithium aluminate was investigated, i.e. LiAlO/sub 2/ doped with MgO. A significant increase in extraction rate was observed. Tritium release from LiAl/sub 5/O/sub 8/, a lithium aluminate with a different crystal structure, which will be formed on irradiation of LiAlO/sub 2/, was thoroughly investigated. In identical experimental conditions, tritium release from LiAl/sub 5/O/sub 8/ was found slower than from gamma LiAlO/sub 2/. The influence of the addition of hydrogen to the sweep gas, on the nature of the species released, and on the tritium extraction rates, is discussed; the influence of the texture is examined. A comparison of the results of experiments carried out both at Chalk River Nuclear Laboratory and at CEN/Saclay on the same samples is given. (ERA citation 12:028185)