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Structural studies of deposited layers on JET MkII-SRP inner divertor tiles
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2007 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 363, 190-195 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2007. Vol. 363, 190-195 p.
Keyword [en]
divertor, carbon based materials, beryllium, surface analysis, tritium depth profiles, re-deposition, graphite, erosion/deposition
Identifiers
URN: urn:nbn:se:kth:diva-16749DOI: 10.1016/j.jnucmat.2007.01.007ISI: 000247657200032Scopus ID: 2-s2.0-34248551019OAI: oai:DiVA.org:kth-16749DiVA: diva2:334792
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Rubel, Marek J.

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