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Potential distribution around a charged dust grain in an electronegative plasma

Published online by Cambridge University Press:  20 May 2010

P. K. SHUKLA  and
L. STENFLO
P. K. SHUKLA
Affiliation:
Institut für Theoretische Physik IV, Ruhr-Universität Bochum, D-44780 Bochum, Germany (ps@tp4.ruhr-uni-bochum.de)
L. STENFLO
Affiliation:
Department of Physics, Linköping University, SE-58183 Linköping, Sweden
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Abstract

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The potential distribution around a charged dust grain in an electronegative plasma is obtained by using the appropriate dielectric susceptibilities for the Boltzmann distributed electrons and negative ions, and for the inertial positive ions that are streaming from the bulk plasma into the electronegative plasma sheath. The existence of oscillatory ion wakefields is shown. Positive ions are trapped/focused in the ion wakefields, and subsequently the negative dust particles are attracted to each other, forming ordered dust structures.

Type
Letter to the Editor
Information
Journal of Plasma Physics , Volume 76 , Issue 5 , October 2010 , pp. 673 - 676
Copyright
Copyright © Cambridge University Press 2010

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