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Nitrogen and neon retention in plasma-facing materials
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy. (Jonfysik)
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2011 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 415, no 1, S223-S226 p.Article in journal (Refereed) Published
Abstract [en]

Tungsten plate was exposed in the TEXTOR tokamak during nitrogen-assisted discharges. In order to determine material mixing on tungsten, the plate was examined ex situ with ion beam analysis techniques including time-of-flight heavy ion elastic recoil detection analysis and also with X-ray photoelectron spectroscopy. Nitrogen content in the range from 1.3 x 10(15) to 3.4 x 10(15) cm(-2) is measured in the outermost surface layer (20 nm) of the W plate. Photoelectron spectroscopy detects nitrogen both in the elemental and compound form, i.e. tungsten nitride (WN/W2N). Nitrogen is measured even in hot areas free from deuterium. Also neon co-implantation into the plasma-facing components has been identified following Ne-cooled pulses.

Place, publisher, year, edition, pages
2011. Vol. 415, no 1, S223-S226 p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-169631DOI: 10.1016/j.jnucmat.2010.08.035ISI: 000298128100049OAI: oai:DiVA.org:uu-169631DiVA: diva2:507519
Available from: 2012-03-05 Created: 2012-03-05 Last updated: 2012-03-05Bibliographically approved

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