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Micro-distribution of fuel and metal in carbon-based plasma-facing materials
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.ORCID iD: 0000-0001-9901-6296
2011 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 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
Institute of Physics Publishing (IOPP), 2011. Vol. T145, 014014- p.
Keyword [en]
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Physical Sciences
URN: urn:nbn:se:kth:diva-70038DOI: 10.1088/0031-8949/2011/T145/014014ISI: 000298475200015ScopusID: 2-s2.0-84857528135OAI: diva2:485981
QC 20120130Available from: 2012-01-30 Created: 2012-01-30 Last updated: 2012-01-30Bibliographically approved

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