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Overview of nitrogen-15 application as a tracer gas for material migration and retention studies in tokamaks
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- Petersson, Per (author)
- KTH,Fusionsplasmafysik
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- Rubel, Marek (author)
- KTH,Fusionsplasmafysik
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- Possnert, Göran (author)
- Uppsala universitet,Tandemlaboratoriet
- show more...
- Brezinsek, S. (author)
- Kreter, A. (author)
- Möller, S. (author)
- Hakola, A. (author)
- Mayer, M. (author)
- Miettunen, J. (author)
- Airila, M. I. (author)
- Makkonen, T. (author)
- Neu, R. (author)
- Rohde, V. (author)
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- (creator_code:org_t)
- IOP Publishing, 2014
- 2014
- English.
- In: Physica Scripta. - : IOP Publishing. - 0031-8949 .- 1402-4896. ; T159, s. 014042-
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Experimental and analytical procedures related to the application of nitrogen-15 isotope for material migration studies have been developed and used for tracer experiments in the TEXTOR and ASDEX-Upgrade tokamaks in order to assess the retention of nitrogen in plasma-facing components made of graphite and tungsten. The surface study was performed by time-of-flight heavy ion elastic recoil detection analysis and by means of nuclear reaction analysis based on the N-15(p, gamma alpha)C-12 process. In both tokamaks nitrogen retention has exceeded 10% of the injected gas. In ASDEX-Upgrade the largest fraction of N-15 has been detected on protruding parts near the injection port, while around 4% has been found in the divertor. The ASDEX-Upgrade results have also been modeled. Helium trapping has been measured in deposits containing tungsten and nitrogen.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- erosion and deposition
- tracer techniques
- fuel retention
- TEXTOR
- ASDEX-Upgrade
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Petersson, Per
- Rubel, Marek
- Possnert, Göran
- Brezinsek, S.
- Kreter, A.
- Möller, S.
- show more...
- Hakola, A.
- Mayer, M.
- Miettunen, J.
- Airila, M. I.
- Makkonen, T.
- Neu, R.
- Rohde, V.
- show less...
- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
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- Physica Scripta
- By the university
- Royal Institute of Technology
- Uppsala University
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