Plasma fluctuation spectra as a diagnostic tool for submicron dust
2010 (English)In: Physics of Plasmas, ISSN 1070-664X, Vol. 17, no 4, 043703- p.Article in journal (Refereed) Published
It is shown that the measurements of density fluctuation spectra in dusty plasmas can constitute a basis for in situ diagnostic of invisible submicron dust. The self-consistent kinetic theory that includes the charging processes and the natural density fluctuations of the dust particles predicts modifications of the spectra due to the presence of dust. A laboratory experiment was carried out where submicron dust was produced in a gas phase and diagnosed by surface analysis of samples and by measurements of its influence on the plasma density fluctuation spectra. Quantitative comparison of the latter with the theory yields information on dust density, size, and distribution in agreement with the results of the surface analysis. The method can be applied to various plasma environments in laboratory and space.
Place, publisher, year, edition, pages
2010. Vol. 17, no 4, 043703- p.
dusty plasmas, plasma density, plasma diagnostics, plasma fluctuations, plasma instability, plasma kinetic theory
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-27926DOI: 10.1063/1.3374035ISI: 000277243000070ScopusID: 2-s2.0-77952370458OAI: oai:DiVA.org:kth-27926DiVA: diva2:382893
QC 201101032011-01-032011-01-032011-01-03Bibliographically approved