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Investigation of tritium analysis methods for ion microbeam application
Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy. (Jonfysik)
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2012 (English)In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, E-ISSN 1872-9584, Vol. 273, 250-253 p.Article in journal (Refereed) Published
Abstract [en]

The trapping and retention of tritium in deposited layers on plasma-facing components is a critical issue for the international tokamak experimental reactor (ITER) and for future power producing tokamak fusion reactors. Cross sections of deposited layers at surfaces in the JET tokamak divertor are being investigated using ion microbeam analysis. To include tritium analysis with high spatial resolution, a number of plausible ion beam techniques have been investigated. Calibration samples with 150 nm tritiated titanium films were used. Absolute concentrations were determined with classical ERD using 2.5-3.5 MeV C-12(+). Cross sections for non-Rutherford ERD and for the T(C-12,p)C-14 and T(C-12,alpha)B-11 nuclear reactions were measured for different angles in the energy range 2.5-15 MeV. Background spectra were collected from pure carbon, beryllium and deuterium enriched samples and the sensitivity for microbeam NRA measurements of the tritium concentration in thick targets with predominantly Be-C-D matrix was estimated.

Place, publisher, year, edition, pages
2012. Vol. 273, 250-253 p.
Keyword [en]
Tritium, Cross section, Microbeam, Fusion
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-170343DOI: 10.1016/j.nimb.2011.07.087ISI: 000300471000066OAI: oai:DiVA.org:uu-170343DiVA: diva2:509194
Available from: 2012-03-12 Created: 2012-03-12 Last updated: 2017-12-07Bibliographically approved

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Hallén, AndersPossnert, Göran

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Hallén, AndersPossnert, Göran
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Tandem LaboratoryDepartment of Physics and Astronomy
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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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