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Tritium distributions on tungsten and carbon tiles used in the JET divertor
EUROfus Consortium, Culham Sci Ctr, JET, Abingdon OX14 3DB, Oxon, England.;Toyama Univ, Gofuku 3190, Toyama 9308555, Japan..
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Fusion Plasma Physics.
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Fusion Plasma Physics.
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Fusion Plasma Physics.
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Number of Authors: 11102016 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. T167, article id 014009Article in journal (Refereed) Published
Abstract [en]

Tritium distributions on the W-coated divertor tiles used with Be wall in JET 2011-2012 ITER-like wall (JET-ILW) campaign were measured using an imaging plate (IP) technique. The high intensity of photo-stimulated luminescence (PSL) from IP was observed at the regions covered by deposited Be layers. However, the PSL intensity was not simply proportional to the thickness of the deposited Be layers; the shadowed region of Tile 4 showed the highest PSL intensity though the thickness of deposited Be layer on this region was smaller than that on Tile 0 and the apron of Tile 1 by an order of magnitude. These observations indicated the influence of impurities such as oxygen on tritium retention in the deposited Be layers. The C tiles used in the 20072009 JET carbon wall (JET-C) campaign were also examined. The high PSL intensity was observed for the regions covered with deposited C layers in this case. The area of tile surfaces covered by the deposited tritium-rich layers on the W-coatedtiles used in the JET-ILW campaign was significantly smaller than that on the C tiles used in the JET-C campaign.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2016. Vol. T167, article id 014009
Keywords [en]
fusion reactors, materials, plasma facing materials, tritium, beryllium, tungsten
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-270466DOI: 10.1088/0031-8949/T167/1/014009ISI: 000383504700010Scopus ID: 2-s2.0-84959922915OAI: oai:DiVA.org:kth-270466DiVA, id: diva2:1424563
Conference
15th International Conference on Plasma-Facing Materials and Components for Fusion Applications (PFMC), MAY, 2015, Aix en Provence, FRANCE
Note

QC 20200417

Available from: 2020-04-17 Created: 2020-04-17 Last updated: 2020-04-17Bibliographically approved

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