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Analyses of microstructure, composition and retention of hydrogen isotopes in divertor tiles of JET with the ITER-like wall
- Masuzakil, S. (author)
- Tokitanii, M. (author)
- Otsuka, T. (author)
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- Oya, Y. (author)
- Hatan, Y. (author)
- Miyamoto, M. (author)
- Sakamoto, R. (author)
- Ashikawa, N. (author)
- Sakurada, S. (author)
- Uemura, Y. (author)
- Azuma, K. (author)
- Yumizurus, K. (author)
- Oyaizu, M. (author)
- Suzuki, T. (author)
- Kurotaki, H. (author)
- Hamaguchi, D. (author)
- Isobel, K. (author)
- Asakura, N. (author)
- Widdowson, A. (author)
- Heinola, K. (author)
- Jachmich, S. (author)
- Zychor, I. (author)
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- (creator_code:org_t)
- 2017-10-19
- 2017
- English.
- In: Physica Scripta. - : IOP PUBLISHING LTD. - 0031-8949 .- 1402-4896. ; T170
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Results of the comprehensive surface analyses of divertor tiles and dusts retrieved from JET after the first ITER-like wall campaign (2011-2012) are presented. The samples cored from the divertor tiles were analyzed. Numerous nano-size bubble-like structures were observed in the deposition layer on the apron of the inner divertor tile, and a beryllium dust with the same structures were found in the matter collected from the inner divertor after the campaign. This suggests that the nano-size bubble-like structures can make the deposition layer to become brittle and may lead to cracking followed by dust generation. X-ray photoelectron spectroscopy analyses of chemical states of species in the deposition layers identified the formation of beryllium-tungsten intermetallic compounds on an inner vertical tile. Different tritium retention profiles along the divertor tiles were observed at the top surfaces and at deeper regions of the tiles by using the imaging plate technique.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Keyword
- JET
- ITER-like wall
- dust
- XPS
- divertor tiles
- tritium retention
- microstructure
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Masuzakil, S.
- Tokitanii, M.
- Otsuka, T.
- Oya, Y.
- Hatan, Y.
- Miyamoto, M.
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- Sakamoto, R.
- Ashikawa, N.
- Sakurada, S.
- Uemura, Y.
- Azuma, K.
- Yumizurus, K.
- Oyaizu, M.
- Suzuki, T.
- Kurotaki, H.
- Hamaguchi, D.
- Isobel, K.
- Asakura, N.
- Widdowson, A.
- Heinola, K.
- Jachmich, S.
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- Zychor, I.
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- Royal Institute of Technology
- Uppsala University
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