@article{oai:toyama.repo.nii.ac.jp:00006542, author = {阿部, 信介 and 松山, 政夫}, journal = {富山大学水素同位体科学研究センター研究報告}, month = {Mar}, note = {A tantalum wire was contaminated with tritium unexpectedly generated during a tritium exposure experiment on ceramic materials. The amount of tritium retention in the tantalum wire was estimated to be 13.3 GBq, and 88% of this amount was recovered as tritium gas by heating at 943 K. After additional evacuation at the same temperature, a part of the wire was dissolved in an aqueous solution of hydrofluoric acid. The result showed that heating was able to decrease the residual amount of tritium in the tantalum wire finally to 564 k:Bq. Subsequently, a part of the tantalum wire was immersed in pure water for about one month to examine the effect of water decontamination. This removed 37% of the residual tritium in the tantalum wire. Altogether the contamination level decreased to 355 k:Bq, which was 2.7xl0^<-3> % of the initial tritium amount in the wire., Article, 富山大学水素同位体科学研究センター研究報告, 31巻, 2012.03.30, pp.59-68}, pages = {59--68}, title = {トリチウム曝露時にスペーサーとして用いられたタンタル線の除染}, volume = {31}, year = {2012} }