A kinetic model for an argon plasma containing dust grains

Denysenko, I., Yu, M.Y., Ostrikov, K., Azarenkov, N.A., & Stenflo, L. (2004) A kinetic model for an argon plasma containing dust grains. Physics of Plasmas, 11(11), pp. 4959-4967.

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A complex low-pressure argon discharge plasma containing dust grains is studied using a Boltzmann equation for the electrons and fluid equations for the ions. Local effects, such as the spatial distribution of the dust density and external electric field, are included, and their effect on the electron energy distribution, the electron and ion number densities, the electron temperature, and the dust charge are investigated. It is found that dust particles can strongly affect the plasma parameters by modifying the electron energy distribution, the electron temperature, the creation and loss of plasma particles, as well as the spatial distributions of the electrons and ions. In particular, for sufficiently high grain density and/or size, in a low-pressure argon glow discharge, the Druyvesteyn-like electron distribution in pristine plasmas can become nearly Maxwellian. Electron collection by the dust grains is the main cause for the change in the electron distribution function.

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ID Code: 74185
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Plasma temperature, Electron energy loss spectroscopy, Boltzmann equations
DOI: 10.1063/1.1793174
ISSN: 1070-664X
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2004 American Institute of Physics
Deposited On: 21 Jul 2014 03:29
Last Modified: 22 Jul 2014 01:02

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