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Interaction of adhered beryllium proxy dust with transient and stationary plasmas
KTH, School of Electrical Engineering and Computer Science (EECS), Space and Plasma Physics.ORCID iD: 0000-0002-6712-3625
KTH, School of Electrical Engineering and Computer Science (EECS), Space and Plasma Physics.ORCID iD: 0000-0001-9632-8104
CNR, Ist Fis Plasma, Via Cozzi 53, I-20125 Milan, Italy..
CNR, Inst Condensed Matter Chem & Energy Technol, Via Cozzi 53, I-20125 Milan, Italy..
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2018 (English)In: Nuclear Materials and Energy, E-ISSN 2352-1791, Vol. 17, p. 222-227Article in journal (Refereed) Published
Abstract [en]

Tungsten (W) substrates with adhered beryllium (Be) proxy dust-copper, chromium, aluminium -have been exposed in the Magnum-PSI linear device. Their interaction with transient and stationary plasmas has been systematically studied under varying heat fluxes and magnetic field topologies. The dust remobilization activities, macro-morphological changes and chemical modifications induced by the plasma incidence are documented. Aluminium is identified to be the most suitable surrogate material due to the similar binary phase diagram and nearly identical evaporation rates. Extrapolation suggests that Be dust cannot survive on hot W surfaces but it can trigger mixed Be/W effects prior to its plasma removal.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2018. Vol. 17, p. 222-227
Keywords [en]
Transient heat loads, Dust remobilization, Dust survivability, Dust adhesion, Mixed material effects
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-241225DOI: 10.1016/j.nme.2018.11.007ISI: 000454165000031Scopus ID: 2-s2.0-85056451086OAI: oai:DiVA.org:kth-241225DiVA, id: diva2:1280009
Note

QC 20190117

Available from: 2019-01-17 Created: 2019-01-17 Last updated: 2019-01-17Bibliographically approved

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Ratynskaia, Svetlana V.Tolias, Panagiotis

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