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Co-deposited layers in the divertor region of JET-ILW
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.ORCID iD: 0000-0001-9901-6296
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2015 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 463, 814-817 p.Article in journal (Refereed) Published
Abstract [en]

Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-resolved deposition patterns. Deuterium, beryllium, carbon, nitrogen and oxygen along with tungsten and Inconel components are the main species detected in the studied surface region. The top of Tile 1 in the inner divertor is the main deposition area where the greatest amounts of deposited species are measured. Beryllium and tungsten-containing deposits on the probes (test mirrors and quartz microbalance) indicate that both low-Z and high-Z metals are transported to remote areas. Deposition of nitrogen-15 tracer used for edge cooling only at the end of experimental campaigns in 2012 was also detected giving evidence that nitrogen is effectively retained in wall components.

Place, publisher, year, edition, pages
2015. Vol. 463, 814-817 p.
National Category
Fusion, Plasma and Space Physics
URN: urn:nbn:se:kth:diva-172697DOI: 10.1016/j.jnucmat.2014.12.077ISI: 000358467200173ScopusID: 2-s2.0-84937629720OAI: diva2:850155

QC 20150901

Available from: 2015-09-01 Created: 2015-08-27 Last updated: 2015-09-01Bibliographically approved

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Petersson, PerRubel, Marek
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