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Dust-surface collisions in adhesion regime for tokamak relevant materials
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.ORCID iD: 0000-0002-6712-3625
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2013 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 438, no Suppl., S796-S799 p.Article in journal (Refereed) Published
Abstract [en]

Empirical studies of dust-surface collisions for metal and carbon projectiles impacting on metal targets in the velocity range from a few m/s to those in excess of 1 km/s have been carried out with the use of a modified pellet injection system. The selected projectile/target shapes, sizes and materials are mimicking the scenario of dust colliding with plasma facing components (PFCs) of a metal machine. The low velocities (10's m/s) reported here, characteristic for dust motion in tokamak scrape-off layer plasmas, are in the range of sticking phenomenon; the critical velocity and size for bouncing off are essential and timely inputs for the dust dynamics codes and statistical models aiming to predict dust transport and redepo-sition on PFCs.

Place, publisher, year, edition, pages
2013. Vol. 438, no Suppl., S796-S799 p.
Keyword [en]
Critical velocities, Dust transport, Empirical studies, Low velocities, Pellet injection, Plasma-facing components, Scrape-off layer plasmas, Velocity range, Magnetoplasma, Dust
National Category
Fusion, Plasma and Space Physics
URN: urn:nbn:se:kth:diva-140099DOI: 10.1016/j.jnucmat.2013.01.171ISI: 000330795300170ScopusID: 2-s2.0-84885468774OAI: diva2:688606
20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices (PSI), Forschungszentrum Julich, Aachen, Germany, May 21-25, 2012

QC 20140117

Available from: 2014-01-17 Created: 2014-01-17 Last updated: 2014-03-07Bibliographically approved

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Ratynskaya, SvetlanaBykov, IgorMasselin, Matthieu
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