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A test of nitrogen-assisted plasma discharges for fuel removal from plasma-facing components in tokamaks
KTH, Skolan för elektro- och systemteknik (EES), Fusionsplasmafysik.
KTH, Skolan för elektro- och systemteknik (EES), Fusionsplasmafysik.ORCID-id: 0000-0001-9901-6296
Visa övriga samt affilieringar
2008 (Engelska)Ingår i: PROCEEDINGS OF THE 17TH INTERNATIONAL VACUUM CONGRESS/13TH INTERNATIONAL CONFERENCE ON SURFACE SCIENCE/INTERNATIONAL CONFERENCE ON NANOSCIENCE AND TECHNOLOGY / [ed] Johansson LSO, Andersen JN, Gothelid M, Helmersson U, Montelius L, Rubel M, Setina J, Wernersson LE, Bristol: IOP PUBLISHING LTD , 2008, Vol. 100, s. 062027-Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Safety regulations limit the amount of tritium accumulated in wall components of a fusion reactor to 350g. Because of this, reduction of long-term fuel inventory is one of the most urgent tasks to be resolved to ensure the safe and economic operation of a reactor-class fusion device. Several methods have been suggested and tested. The aim of this paper is to evaluate the cleaning efficiency of plasma-facing components by ICRH-assisted plasma discharges with in nitrogen-hydrogen in the TEXTOR tokamak. Three types of probes were investigated: laboratory prepared a-C: D layers on silicon; boron layers on silicon obtained by pre-boronisation in TEXTOR and not coated Inconel substrates. The main results are following: (i) laboratory prepared a-C: D layers are not affected: deuterium and carbon contents did not decrease (ii) the morphology of layers pre-boronised in TEXTOR is not affected (iii) no significant effects were noticed on Inconel probes. A comparison of cleaning methods with nitrogen and oxygen is also presented.

Ort, förlag, år, upplaga, sidor
Bristol: IOP PUBLISHING LTD , 2008. Vol. 100, s. 062027-
Serie
Journal of Physics Conference Series, ISSN 1742-6588 ; 100
Nyckelord [en]
CO-DEPOSITED LAYERS, LABORATORY PLASMAS, JET, LASER, DIVERTOR, EROSION, TILES
Nationell ämneskategori
Fusion, plasma och rymdfysik
Identifikatorer
URN: urn:nbn:se:kth:diva-25568DOI: 10.1088/1742-6596/100/6/062027ISI: 000275655200223Scopus ID: 2-s2.0-77954339214OAI: oai:DiVA.org:kth-25568DiVA, id: diva2:370997
Konferens
17th International Vacuum Congress/13th International Conference on Surface Science/Internatinal Conference on Nanoscience and Technology Stockholm, SWEDEN, JUL 02-06, 2007
Anmärkning
QC 20101118Tillgänglig från: 2010-11-18 Skapad: 2010-10-27 Senast uppdaterad: 2011-03-04Bibliografiskt granskad

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Rubel, Marek J.

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