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Global distribution of tritium in JET with the ITER-like wall
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- Lee, S. E. (author)
- Univ Toyama, Toyama 9308555, Japan.
- Hatano, Y. (author)
- Tokitani, M. (author)
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- Masuzaki, S. (author)
- Oya, Y. (author)
- Otsuka, T. (author)
- Ashikawa, N. (author)
- Torikai, Y. (author)
- Asakura, N. (author)
- Nakamura, H. (author)
- Isobe, K. (author)
- Kurotaki, H. (author)
- Hamaguchi, D. (author)
- Hayashi, T. (author)
- Widdowson, A. (author)
- Jachmich, S. (author)
- Likonen, J. (author)
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- Univ Toyama, Toyama 9308555, Japan Fusionsplasmafysik (creator_code:org_t)
- Elsevier BV, 2021
- 2021
- English.
- In: Nuclear Materials and Energy. - : Elsevier BV. - 2352-1791. ; 26
- Journal article (peer-reviewed)
Abstract
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- Nondestructive analysis of tritium (T) distribution was performed by means of imaging plate technique on specimens cut from the Be limiters, W-coated carbon tiles and bulk W lamellae retrieved from the JET tokamak after the first and third experimental campaigns with the ITER-like wall. Afterwards, analyses were continued using X-ray photoelectron spectroscopy, microscopy techniques and thermal desorption spectroscopy. Co-deposits formed on the W-coated tiles in the 1st campaign showed large T retention because of high carbon content reaching up to 50 atomic %, while the carbon fraction in co-deposits after the 3rd campaign was distinctly lower. The T retention of the plasma-facing surface of the bulk W tile was smaller than that of the W-coated tiles by a factor of 20, while deposition of small amount of T was found at the side surfaces facing to the gaps in a lamella structure. The correlation of T distributions with surface morphology and the discharge conditions is discussed.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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- ref (subject category)
- art (subject category)
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- Lee, S. E.
- Hatano, Y.
- Tokitani, M.
- Masuzaki, S.
- Oya, Y.
- Otsuka, T.
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- Ashikawa, N.
- Torikai, Y.
- Asakura, N.
- Nakamura, H.
- Isobe, K.
- Kurotaki, H.
- Hamaguchi, D.
- Hayashi, T.
- Widdowson, A.
- Jachmich, S.
- Likonen, J.
- Rubel, Marek
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- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- Nuclear Material ...
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- Royal Institute of Technology
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