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Journal Articles

Surface analysis for the TFTR Armor tile exposed to D-T plasmas using nuclear technique

Kubota, Naoyoshi; Ochiai, Kentaro; Kutsukake, Chuzo; Hayashi, Takao; Shu, Wataru; Kondo, Keitaro; Verzilov, Y.*; Sato, Satoshi; Yamauchi, Michinori; Nishi, Masataka; et al.

Proceedings of 21st IAEA Fusion Energy Conference (FEC 2006) (CD-ROM), 7 Pages, 2007/03

Fuel and impurity particles show complicated behavior on the surface of plasma facing components (PFC) in fusion devices. The study is important for the design of the fuel recycling, safety management of the tritium inventory, etc. Quantitative measurements of hydrogen and lithium isotopes together with other impurities on the PFC surface exposed to D-T plasmas in TFTR were performed using the deuteron-induced nuclear reaction analysis, imaging plate method, full combustion method and activation analysis. The tritium depth profile was different from deuterium one. The surface tritium largely contributed to the whole tritium in the sample. On the other hand, the retained amount of lithium-6 was lager than that of lithium-7. This relates to the injection of enriched lithium-6 pellets in some campaigns. No other impurities were detected. So the large amount of tritium remained near the surface and did not diffuse more deeply, which gives a bright prospect for tritium safety.

Journal Articles

The Effect of oxygen on the release of tritium during baking of TFTR D-T tiles

Shu, Wataru; Gentile, C. A.*; Skinner, C. H.*; Langish, S.*; Nishi, Masataka

Fusion Engineering and Design, 61-62, p.599 - 604, 2002/11

 Times Cited Count:13 Percentile:65.26(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Tritium decontamination of TFTR D-T plasma facing components using ultra violet laser

Shu, Wataru; Kawakubo, Yukio*; Ohira, Shigeru; Oya, Yasuhisa; Hayashi, Takumi; Nakamura, Hirofumi; Iwai, Yasunori; Nishi, Masataka; Gentile, C. A.*; Skinner, C. H.*; et al.

Fusion Science and Technology, 41(3), p.690 - 694, 2002/05

no abstracts in English

Journal Articles

Tritium decontamination of TFTR carbon tiles employing ultra violet light

Shu, Wataru; Ohira, Shigeru; Gentile, C. A.*; Oya, Yasuhisa; Nakamura, Hirofumi; Hayashi, Takumi; Iwai, Yasunori; Kawamura, Yoshinori; Konishi, Satoshi; Nishi, Masataka; et al.

Journal of Nuclear Materials, 290-293, p.482 - 485, 2001/03

 Times Cited Count:9 Percentile:57.68(Materials Science, Multidisciplinary)

no abstracts in English

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