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Testing of tungsten and tantalum limiters at the TEXTOR tokamak: Material performance and deuterium retention
KTH, Superseded Departments, Alfvén Laboratory.ORCID iD: 0000-0001-9901-6296
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2003 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. T103, 59-62 p.Article in journal (Refereed) Published
Abstract [en]

Tungsten and tantaium were examined in the TEXTOR tokamak as test limiters in order to compare their performance under plasma operation and to recognise fuel recycling on endothermic (W) and exothermic (Ta) hydrogen absorbers. Differences have been noticed in the distribution and microstructure of co-deposits. in the fuel inventory in the bulk of metals and, in the deuterium release mechanism (ratio of molecules to atoms). As a result of poor thermal conductivity. the surface temperature of Ta during the power deposition was higher than that of W and it increased shot-by-shot because of the degradation of thermal properties due to surface modification. Results on thermal response, fuel recycling and inventory show that. as a candidate material for plasma facing components. tungsten is superior to tantalum.

Place, publisher, year, edition, pages
2003. Vol. T103, 59-62 p.
Keyword [en]
plasma
Identifiers
URN: urn:nbn:se:kth:diva-22498DOI: 10.1238/Physica.Topical.103a00059ISI: 000182854700013OAI: oai:DiVA.org:kth-22498DiVA: diva2:341196
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Rubel, Marek J.

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