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Interaction of charged dust particles in clouds of thermodynamically equilibrium charges

  • Plasma, Gases
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Abstract

The solution of the Poisson-Boltzmann equation for a cloud of charges surrounding two charged dust particles treated as Debye atoms forming a Debye molecule is investigated numerically using Cassini coordinates. The electric force exerted on a dust particle by the other dust particle was determined by integrating the electrostatic pressure on the surface of the dust particle. It is shown that attractive forces appear when the following two conditions are satisfied. First, the Debye radius (corresponding to the electron density at half the mean distance between the dust particles) must be approximately equal to half the mean distance between the dust particles. Attraction between the dust particles emerges at a distance equal approximately to half the mean distance between the dust particles. Second, attraction takes place when like charges are concentrated predominantly on the dust particles. If the particles carry a small fraction of charge of the same polarity, repulsion between the particles takes place at all distances.

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Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 122, No. 5, 2002, pp. 1003–1018.

Original Russian Text Copyright © 2002 by Gundienkov, Yakovlenko.

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Gundienkov, V.A., Yakovlenko, S.I. Interaction of charged dust particles in clouds of thermodynamically equilibrium charges. J. Exp. Theor. Phys. 95, 864–877 (2002). https://doi.org/10.1134/1.1528678

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  • DOI: https://doi.org/10.1134/1.1528678

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