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Plasma fluctuation spectra as a diagnostic tool for submicron dust
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.ORCID iD: 0000-0002-6712-3625
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2010 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 17, no 4, 043703- p.Article in journal (Refereed) Published
Abstract [en]

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.
Keyword [en]
dusty plasmas, plasma density, plasma diagnostics, plasma fluctuations, plasma instability, plasma kinetic theory
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-27926DOI: 10.1063/1.3374035ISI: 000277243000070Scopus ID: 2-s2.0-77952370458OAI: oai:DiVA.org:kth-27926DiVA: diva2:382893
Note
QC 20110103Available from: 2011-01-03 Created: 2011-01-03 Last updated: 2017-12-11Bibliographically approved

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Ratynskaiy, Svetlana

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