Effective interaction potential and ordered structures of dust particles in a gas-discharge plasma |
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| Authors: | O M Belotserkovskii I E Zakharov A P Nefedov V S Filinov V E Fortov O A Sinkevich |
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| Institution: | (1) Institute of Planning Automation, Russian Academy of Sciences, 123056 Moscow, Russia;(2) Silicon Graphics Computer Systems, SGI Europe, 1196 Gland, Switzerland;(3) Joint Institute of High Temperatures, Russian Academy of Sciences Research Center for the Thermal Physics of Pulsed Phenomena, 127412 Moscow, Russia;(4) Moscow Energy Institute, 111250 Moscow, Russia |
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| Abstract: | An effective potential is proposed for the interaction between dust particles in a gas-discharge plasma which takes account
of the following physical factors: the spatial dependence of the particle charges on the floating potential of the plasma,
anisotropy of the interaction, resulting from focusing of the negatively charged particles of the drift ion current, and aspects
of screening of the dust particles by plasma electrons and ions which interact strongly with them and recombine faster in
their vicinity and on their surface. Monte Carlo calculations explain the formation of threadlike structures of dispersed
particles, and also “transverse crystallization” of these “threads” in a stratified gas-discharge plasma.
Zh. éksp. Teor. Fiz. 115, 819–836 (March 1999) |
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