Materials research under ITER-like divertor conditions at FOM Rijnhuizen

TitleMaterials research under ITER-like divertor conditions at FOM Rijnhuizen
Publication TypeJournal Article
Year of Publication2011
AuthorsG.M Wright, J. Westerhout, R.S. Al, E. Alves, L.C Alves, N.P Barradas, M.A van den Berg, D. Borodin, S. Brezinsek, S. Brons, H.JN van Eck, B. de Groot, A.W Kleyn, W.R Koppers, O.G Kruijt, J. Linke, N.JL Cardozo, M. Mayer, H.J van der Meiden, P.R Prins, G.J van Rooij, J. Scholten, A.E Shumack, P.HM Smeets, G. De Temmerman, W.AJ Vijvers, J. Rapp
JournalJournal of Nuclear Materials
Volume417
Issue1-3
Pagination457-462
Date PublishedOct
Type of ArticleArticle; Proceedings Paper
ISBN Number0022-3115
KeywordsCHEMICAL EROSION, DEUTERIUM RETENTION, FLUXES, LOW-ENERGY, PLASMA, Tungsten
Abstract

At FOM Rijnhuizen, linear plasma generators are used to investigate plasma-material interactions under high-density (10(23) H(+)/m(2) s) and low-temperature hydrogen plasma indicate silicon carbide has a lower relative rate of gross erosion than other carbon-based materials (e.g. graphite, diamond, carbon-fiber composites) by a factor of 7-10. Hydrogenic retention is the focus of research on tungsten and molybdenum. For target temperatures of 700-1600 K. the temperature dependence of hydrogenic retention is the dominant factor. Damage to the surface by heavy ion irradiation has shown to enhance retention by a factor of 2.5-4.1. Thermal stressing of W via, e-beam thermal cycling also enhances hydrogenic retention by a factor of 2.1 +/- 0.2, likely due to the introduction of thermal defects, which act as trapping sites for implanted hydrogenic isotopes. (C) 2011 Elsevier B.V. All rights reserved.

URLhttp://infoscience.epfl.ch/record/175703
DOI10.1016/j.jnucmat.2010.12.209
Division

PSI

Department

PSI-E

PID

220c514db276ec8f4a653d56bafaceea

Alternate TitleJ. Nucl. Mater.
LabelOA

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