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Micro-distribution of fuel and metal in carbon-based plasma-facing materials
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
2011 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, no T145, 014014- p.Article in journal (Refereed) Published
Abstract [en]

Surfaces of carbon fibre composite tiles from the toriodal pump limiter of Tore Supra were examined with ion beams to determine simultaneously the distribution of co-deposited deuterium and metallic plasma impurities (i. e. steel components). With a (3)He(+) ion beam the reaction (2)D((3)He, p)(4)He was used for deuterium, (12)C((3)He, p)(14)N for carbon, whereas beam-induced x-ray emission and back-scattered ions served for the detection of heavier elements. Measurements were made both with a 1mm beam and by a micro-beam focused down to 20 mu m spot size and scanned over the sample to obtain maps of the different elements. Distribution maps of different elements-fuel and metal species-are presented for four distinct regions on the limiter: erosion zone, shadowed area, thin deposits and thick flaking deposits.

Place, publisher, year, edition, pages
2011. no T145, 014014- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-167923DOI: 10.1088/0031-8949/2011/T145/014014ISI: 000298475200015OAI: oai:DiVA.org:uu-167923DiVA: diva2:489114
Available from: 2012-02-02 Created: 2012-02-02 Last updated: 2012-02-02Bibliographically approved

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Possnert, Göran
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