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Structural studies ...
Structural studies of deposited layers on JET MkII-SRP inner divertor tiles
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Likonen, J. (author)
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Coad, J. P. (author)
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Vainonen-Ahlgren, E. (author)
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Renvall, T. (author)
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Hole, D. E. (author)
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- Rubel, Marek J. (author)
- KTH,Fusionsplasmafysik
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Widdowson, A. (author)
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(creator_code:org_t)
- Elsevier BV, 2007
- 2007
- English.
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In: Journal of Nuclear Materials. - : Elsevier BV. - 0022-3115 .- 1873-4820. ; 363, s. 190-195
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Deposited layers formed on JET inner divertor tiles during 1998-2004 and 2001-2004 campaigns have been investigated using secondary ion mass spectrometry (SIMS), Rutherford Backscattering (RBS) and optical microscopy. The thickness of the deposit decreases from the top of vertical tile 1 to the bottom and then increases on vertical tile 3 reaching similar to 60 mu m. There are even thicker deposits on the small sloping section of the floor tile 4 that can be accessed by the plasma at the inner divertor legs. Deposited films on divertor inner wall tiles are enriched in Be indicating chemical erosion of C and a multi-step transport of C to the shadowed area on floor tile 4. The films have generally a layered and globular structure in the areas with plasma contact.
Keyword
- divertor
- carbon based materials
- beryllium
- surface analysis
- tritium depth profiles
- re-deposition
- graphite
- erosion/deposition
Publication and Content Type
- ref (subject category)
- art (subject category)
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