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In-situ measurements of carbon and deuterium deposition using the fast reciprocating probe in TEXTOR
KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.ORCID iD: 0000-0002-8760-1137
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2009 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 390-91, 179-182 p.Article in journal (Refereed) Published
Abstract [en]

Silicon samples were exposed in the scrape-off layer of the TEXTOR plasma using a fast reciprocating probe, with the aim of studying carbon deposition and deuterium retention during Dynamic Ergodic Divertor (DED) operation. Separate samples were exposed for 300 ms at the flat-top phase of neutral beam heated discharges. The exposure conditions were varied on a shot-to-shot basis by external magnetic perturbations generated by the DED in the m/n = 3/1, DC regime, base configuration. Nuclear Reaction Analysis (NRA) was used to characterise collector sample surfaces after their exposure. Enhanced concentrations of both carbon and deuterium (C 3-10 x 10(16) at./cm(2), D 8-60 x 10(15) at./cm(2)) were found. The D/C ratio was less than unity which indicates that most of the carbon and deuterium were co-deposited. Carbon e-folding lengths of about 2 cm were found on both toroidal sides of the probe independent of DED perturbations.

Place, publisher, year, edition, pages
2009. Vol. 390-91, 179-182 p.
Keyword [en]
National Category
Fusion, Plasma and Space Physics
URN: urn:nbn:se:kth:diva-25578DOI: 10.1016/j.jnucmat.2009.01.162ISI: 000267747300041ScopusID: 2-s2.0-67349159909OAI: diva2:370861
18th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices
QC 20101118Available from: 2010-11-18 Created: 2010-10-27 Last updated: 2011-03-17Bibliographically approved

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Emmoth, BirgerHallén, AndersRubel, Marek J.Sundelin, Per
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