Studies of mobile dust in scrape-off layer plasmas using silica aerogel collectors
2011 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 415, no 1, S1089-S1093 p.Article in journal (Refereed) Published
Dust capture with ultralow density silica aerogel collectors is a new method, which allows time resolved in situ capture of dust particles in the scrape-off layers of fusion devices, without substantially damaging the particles. Particle composition and morphology, particle flux densities and particle velocity distributions can be determined through appropriate analysis of the aerogel surfaces after exposure. The method has been applied in comparative studies of intrinsic dust in the TEXTOR tokamak and in the Extrap T2R reversed field pinch. The analysis methods have been mainly optical microscopy and SEM. The method is shown to be applicable in both devices and the results are tentatively compared between the two plasma devices, which are very different in terms of edge plasma conditions, time scale, geometry and wall materials.
Place, publisher, year, edition, pages
2011. Vol. 415, no 1, S1089-S1093 p.
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-90673DOI: 10.1016/j.jnucmat.2011.01.052ISI: 000298128100247ScopusID: 2-s2.0-80054837796OAI: oai:DiVA.org:kth-90673DiVA: diva2:506026
19th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices (PSI). QC 201202272012-02-272012-02-272012-02-27Bibliographically approved