Time resolved collection and characterization of dust particles moving in the TEXTOR scrape-off layer
2013 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 438, no Suppl., S681-S685 p.Article in journal (Refereed) Published
Moving dust has been collected in the SOL of TEXTOR in a time-resolved way with silica aerogel collectors [1-3]. The collectors were exposed to the toroidal particle flux in NBI heated discharges during the startup and flat top phase. Intrinsic dust was collected in several discharges. Other discharges were accompanied with injection of known amounts of pre-characterized dust (W, C flakes and C microspheres) from a position toroidally 120° away from the collector. Particle flux, composition and dust size distribution have been determined with SEM and EDX. Calibration allowed particle velocity estimates to be made. Upper limits for the deuterium content of individual dust grains have been determined by NRA.
Place, publisher, year, edition, pages
2013. Vol. 438, no Suppl., S681-S685 p.
Deuterium content, Dust size distribution, Heated discharges, Particle fluxes, Particle velocities, Scrape-off layer, Silica aerogels, Time-resolved, Silica gel, Sols, Dust
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-140094DOI: 10.1016/j.jnucmat.2013.01.144ISI: 000330795300143ScopusID: 2-s2.0-84885469754OAI: oai:DiVA.org:kth-140094DiVA: diva2:688711
20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices (PSI), Forschungszentrum Julich, Aachen, Germany, May 21-25, 2012
QC 201401172014-01-172014-01-172014-05-08Bibliographically approved