Dust-surface collisions in adhesion regime for tokamak relevant materials
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
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.
Critical velocities, Dust transport, Empirical studies, Low velocities, Pellet injection, Plasma-facing components, Scrape-off layer plasmas, Velocity range, Magnetoplasma, Dust
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-140099DOI: 10.1016/j.jnucmat.2013.01.171ISI: 000330795300170ScopusID: 2-s2.0-84885468774OAI: oai:DiVA.org:kth-140099DiVA: diva2:688606
20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices (PSI), Forschungszentrum Julich, Aachen, Germany, May 21-25, 2012
QC 201401172014-01-172014-01-172014-03-07Bibliographically approved