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Dust remobilization in fusion plasmas under steady state conditions
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.ORCID iD: 0000-0001-9632-8104
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.ORCID iD: 0000-0002-6712-3625
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2016 (English)In: Plasma Physics and Controlled Fusion, ISSN 0741-3335, E-ISSN 1361-6587, Vol. 58, no 2, article id 025009Article in journal (Refereed) Published
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Abstract [en]

The first combined experimental and theoretical studies of dust remobilization by plasma forces are reported. The main theoretical aspects of remobilization in fusion devices under steady state conditions are analyzed. In particular, the dominant role of adhesive forces is highlighted and generic remobilization conditions-direct lift-up, sliding, rolling-are formulated. A novel experimental technique is proposed, based on controlled adhesion of dust grains on tungsten samples combined with detailed mapping of the dust deposition profile prior and post plasma exposure. Proof-of-principle experiments in the TEXTOR tokamak and the EXTRAP-T2R reversed-field pinch are presented. The versatile environment of the linear device Pilot-PSI allowed for experiments with different magnetic field topologies and varying plasma conditions that were complemented with camera observations.

Place, publisher, year, edition, pages
Institute of Physics (IOP), 2016. Vol. 58, no 2, article id 025009
Keywords [en]
dust adhesion, dust remobilization, PFC
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-184561DOI: 10.1088/0741-3335/58/2/025009ISI: 000371570900010Scopus ID: 2-s2.0-84955304982OAI: oai:DiVA.org:kth-184561DiVA, id: diva2:916973
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QC 20160405

Available from: 2016-04-05 Created: 2016-04-01 Last updated: 2024-03-15Bibliographically approved

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Tolias, PanagiotisRatynskaia, SvetlanaBykov, IgorVignitchouk, Ladislas Tancrède Raymond

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Tolias, PanagiotisRatynskaia, SvetlanaBykov, IgorVignitchouk, Ladislas Tancrède Raymond
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Plasma Physics and Controlled Fusion
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