The effect of dust charge variation, due to ion flow and electron depletion, on dust levitation

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Land, Victor
Douglass, Angela Michelle.
Qiao, Ke
Matthews, Lorin Swint.
Hyde, Truell Wayne.
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AIP Conference Proceedings
Abstract

Using a fluid model, the plasma densities, electron temperature and ion Mach number in front of a powered electrode in different plasma discharges is computed. The dust charge is computed using OML theory for Maxwellian electrons and ions distributed according to a shifted-Maxwellian. By assuming force balance between gravity and the electrostatic force, the dust levitation height is obtained. The importance of the dust charge variation is investigated.

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AIP Conf. Proc. 1397, 98 (2011)