@article{oai:toyama.repo.nii.ac.jp:00006346, author = {松山, 政夫 and 市村, 憲司 and 渡辺, 国昭 and 加藤, 一真 and 前川, 寛 and 佐藤, 博夫}, journal = {富山大学トリチウム科学センター研究報告 = Annual Report of Tritium Research Center, Toyama University}, month = {}, note = {application/pdf, The adsorption of tritium on material surface causes significant contamination of tritium handling systems, β-ray counting devices and parts contained in them. Therefore, it is necessary to establish effective decontamination techniques or develop materials free from contamination. From this viewpoint, the decontamination of a gold-plated ionization chamber was studied in which tritiated water was adsorbed by photon irradiation in order to establish an in-situ decontamination technique. It was observed that photon irradiation enhanced the desorption of tritiated water. The extent of the enhancement was larger in deuterium lamp illumination than halogen lamp illumination. The photon irradiation in various atmospheres such as room air, argon and moistened argon gave no appreciable differentce in the decontamination effect, indicating that the enhanced desorption of tritiated water was not due to the interaction between adsorbed tritiated water and ions produced in the phase but caused by photodesorption of tritiated water. It was concluded that the irradiation of photons in the ultraviolet region was applicable as the in-situ decontamination technique to devices such as ionization chamber where materials with low thermal stability are used., Article}, pages = {61--68}, title = {光照射による吸着トリチウム水の除去}, volume = {5}, year = {1985} }