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The samples comprised the materials used for conventional vacuum systems. Ad/absorption tritium could be detected as RD (room temperature desorption), SR (surface residuum) and HD (high temperature desorption) species. With respect to organic polymers, only HT molecules dissolved in the samples were responsible for the RD, SR and HD. As for other materials, however, the RD species was revealed to be physically adsorbed HTO. The HD species formed a peak at about 460K for each material except organic polymers. It appeared to be adsorbed tritium, but desorbed as a condensable gas at liquid nitrogen temperature. It was, however, not soluble in water. Its chemical forms and formation mechanisms were left as open question. The SR species appeared to be a part of HD. 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未処理の真空材料に対するトリチウムの吸着
https://doi.org/10.15099/00006384
https://doi.org/10.15099/00006384765e3241-84b1-4527-9106-448357a83990
名前 / ファイル | ライセンス | アクション |
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annual_report10-4.pdf (677.4 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2007-10-03 | |||||
タイトル | ||||||
タイトル | 未処理の真空材料に対するトリチウムの吸着 | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15099/00006384 | |||||
ID登録タイプ | JaLC | |||||
著者 |
三宅, 均
× 三宅, 均× 松山, 政夫× 芦田, 完× 渡辺, 国昭× Cowgill, Donald F. |
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著者別名 | ||||||
姓名 | Cowgill, Donald F. | |||||
著者別名 | ||||||
姓名 | MIYAKE, Hitoshi | |||||
著者別名 | ||||||
姓名 | MATSUYAMA, Masao | |||||
著者別名 | ||||||
姓名 | ASHIDA, Kan | |||||
著者別名 | ||||||
姓名 | WATANABE, Kuniaki | |||||
その他(別言語等)のタイトル | ||||||
その他のタイトル | Tritium Ad/absorption for Some Vacuum Component Materials Having Non-Cleaned Surfaces | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A simple system using tritium counting and thermal desorption techniques was developed to measure tritium adsorption and/or absorption on/in materials having non-cleaned surfaces and to estimate the tritium inventory/contamination of materials near typical conditions. The samples comprised the materials used for conventional vacuum systems. Ad/absorption tritium could be detected as RD (room temperature desorption), SR (surface residuum) and HD (high temperature desorption) species. With respect to organic polymers, only HT molecules dissolved in the samples were responsible for the RD, SR and HD. As for other materials, however, the RD species was revealed to be physically adsorbed HTO. The HD species formed a peak at about 460K for each material except organic polymers. It appeared to be adsorbed tritium, but desorbed as a condensable gas at liquid nitrogen temperature. It was, however, not soluble in water. Its chemical forms and formation mechanisms were left as open question. The SR species appeared to be a part of HD. The order of adsorption amounts was as follows: [Epoxy resin, FRP (Fiber reinforced plastics)] > [Ni (Nickel)] > [Cr (Chromium), Fe (Iron), SS304 (Stainless steel), A2219 (Aluminum alloy)] > [h-BN (Boron nitride), SiC (Silicon carbide), ASS (SS304 passivated by anodic oxidation layers), BSS (SS304 passivated by h-BN segregation layers)]. This order was considerably different from that observed for clean surfaces. In addition, the adsorption amounts for metals/alloy were about two orders of magnitude smaller than those reported for clean metal surfaces. This discrepancy in results in apparently due to the presence of oxides and contamination layers over the samples used. Nevertheless, it was found that the passivation of SS304 with anodic oxidation and/or h-BN segregation layers should be quite valid to decrease the tritium inventory and/or contamination on/of the material walls of tritium handling systems. | |||||
書誌情報 |
富山大学水素同位体機能研究センター研究報告 巻 10-11, p. 43-57, 発行日 1991 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0916-8486 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN10443060 | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
出版者 | 富山大学水素同位体機能研究センター | |||||
資源タイプ(DSpace) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article |