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Ion beam micro analysis of deposits at tokamak divertor surfaces
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.
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2010 (English)In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, Vol. 268, no 11-12, 1838-1841 p.Article in journal (Refereed) Published
Abstract [en]

Cross sections of deposited layers in the Joint European Torus (JET) were analysed using the nuclear micro analysis at the Tandem Laboratory, Uppsala University. For deuterium and beryllium the nuclear reactions D-2(He-3,p)He-4 and Be-9(He-3,p(n))B-11 were exploited for analysis. Typically the analyses have been made with 10 mu m spatial resolution and a sensitivity of better than one atomic percent for beryllium or deuterium in carbon matrix. Comparing several different surface treatment techniques shows that polishing the sample surface give very good optical surface information but that some amount of deuterium and beryllium probably is removed. For good quantitative results the measurement can either be done on a rough surface or the top of the polished surface can be cut off. (C) 2010 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2010. Vol. 268, no 11-12, 1838-1841 p.
Keyword [en]
Nuclear reaction analysis, Micro-beam, Deuterium, Beryllium
National Category
Subatomic Physics Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-29696DOI: 10.1016/j.nimb.2010.02.025ISI: 000278702300032Scopus ID: 2-s2.0-77953130839OAI: oai:DiVA.org:kth-29696DiVA: diva2:397288
Note
QC 20110214Available from: 2011-02-14 Created: 2011-02-11 Last updated: 2011-02-14Bibliographically approved

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Bergsåker, Henric
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