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Kreter, A; Brezinsek, S; Freisinger, M; Philipps, V; Schmitz, O; Sergienko, G; Rubel, M; Sundelin, P; Emmoth, B; Pelicon, P, E-mail: a.kreter@fz-juelich.de
TEXTOR Team2008
TEXTOR Team2008
AbstractAbstract
[en] CFC NB31, CFC DMS780 and fine-grain graphite EK98 were simultaneously exposed in the SOL of TEXTOR in order to measure the retention of deuterium in the material bulk. After exposure, the samples were analysed by thermal desorption spectrometry and nuclear reaction analysis with a conventional beam as well as with a microbeam. The deuterium retention amounts (2-4)·1021 D/m2 for the incident fluence of ∼2·1025 D/m2. The retention values are similar for both CFC materials and lower by ∼20-40% for EK98. The retention in all three materials scales roughly with a square root of incident fluence without saturation for the range of fluences obtained. The majority of deuterium is stored in a surface layer of <8 μm. However, in NB31 deuterium is detectable as deep as 80 μm. The in-bulk retention estimated for a TEXTOR experimental campaign of ∼7500 s of plasma has a contribution of ∼10% to the total retention, which is dominated by deuterium-carbon co-deposition
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Source
IVC-17: 17. international vacuum congress; Stockholm (Sweden); 2-6 Jul 2007; ICSS-13: 13. international conference on surface science; Stockholm (Sweden); 2-6 Jul 2007; ICN+T 2007: International conference on nanoscience and technology; Stockholm (Sweden); 2-6 Jul 2007; Available from http://dx.doi.org/10.1088/1742-6596/100/6/062024; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
Journal of Physics. Conference Series (Online); ISSN 1742-6596;
; v. 100(6); [4 p.]

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