Abstract
Spatial variation of dust particle charges are estimated numerically for typical laboratory experiment conditions in a radio-frequency (rf) capacitive discharge. The surface potentials of macroparticles levitating in the upper part of the near-electrode layer of the rf discharge are measured. A model is proposed for the formation of irregular dust oscillations due to stochastic motion of dust in the bulk of a spatially inhomogeneous plasma (in the presence of a dust charge gradient). This mechanism is used for analyzing the results of measurements of the amplitude of vertical vibrations of dust particles in the near-electrode layer of the rf discharge. It is found that the dust charge gradient may be responsible for the development of such vibrations.
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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. 123, No. 6, 2003, pp. 1179–1187.
Original Russian Text Copyright © 2003 by Vaulina, Samarian, James, Petrov, Fortov.
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Vaulina, O.S., Samarian, A.A., James, B. et al. Analysis of macroparticle charging in the near-electrode layer of a high-frequency capacitive discharge. J. Exp. Theor. Phys. 96, 1037–1044 (2003). https://doi.org/10.1134/1.1591215
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DOI: https://doi.org/10.1134/1.1591215