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Nitrogen and Neon Retention in Plasma-Facing Materials
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.ORCID iD: 0000-0001-9901-6296
Forschungszentrum Juelich, Germany.
University of Basel, Switzerland.
Ångström Laboratory, Uppsala University, Association EURATOM – VR, Uppsala, Sweden.
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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 × 1015 to 3.4 × 1015 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
Elsevier, 2011. Vol. 415, no 1, S223-S226 p.
National Category
Natural Sciences Fusion, Plasma and Space Physics
URN: urn:nbn:se:kth:diva-69502DOI: 10.1016/j.jnucmat.2010.08.035ISI: 000298128100049ScopusID: 2-s2.0-79960343191OAI: diva2:485448
QC 20120207Available from: 2012-02-07 Created: 2012-01-29 Last updated: 2012-02-27Bibliographically approved

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