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Surface activity of dust with variable charge

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Abstract

A simple model is developed for the self-consistent charging of a dust layer in an electrode plasmasheath, as well as for the force balance in this layer. The anisotropy of the plasma pressure near the plasmaboundary makes it possible to introduce the notion of surface tension. The equilibrium charge, the height atwhich the dust layer levitates above the electrode, and the plasma surface tension are calculated numerically as functions of the dust density. In all of the cases under analysis, the presence of dust is shown to increase the plasma surface tension, which indicates that the plasma sheath may become structurally unstable.

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Authors and Affiliations

  1. Prokhorov Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russia

    A. M. Ignatov

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  1. A. M. Ignatov
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__________

Translated from Fizika Plazmy, Vol. 30, No. 3, 2004, pp. 256–262.

Original Russian Text Copyright © 2004 by Ignatov.

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Ignatov, A.M. Surface activity of dust with variable charge. Plasma Phys. Rep. 30, 228–234 (2004). https://doi.org/10.1134/1.1687024

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  • DOI: https://doi.org/10.1134/1.1687024

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