Abstract
The effect of dust particle concentration on gas discharge plasma parameters was studied through development of a self-consistent kinetic model which is based on solving the Boltzmann equation for the electron distribution function. It was shown that an increase in the Havnes parameter causes an increase in the average electric field and ion density, as well as a decrease in the charge of dust particles and electron density in a dust particle cloud. Self-consistent simulations for a wide range of plasma and dust particle parameters produced several scaling laws: these are laws for dust particle potential and electric field as a function of dust particle concentration and radius, and the discharge current density. The simulation results demonstrate that the process of self-consistent accommodation of parameters of dust particles and plasma in condition of particle concentration growth causes a growth in the number of high-energy electrons in plasma, but not to depletion of electron distribution function.
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This research was financially supported by the Grant from the Ministry for Education and Science obtained in the framework of the Federal objective program “Research and development in top priority directions of developing the Russian scientific-technology complex for years 2007–2013” (SC-16.516.11.6009).
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Fedoseev, A.V., Sukhinin, G.I., Ramazanov, T.S. et al. Interaction between glow discharge plasma and dust particles. Thermophys. Aeromech. 18, 615–627 (2011). https://doi.org/10.1134/S086986431104010X
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DOI: https://doi.org/10.1134/S086986431104010X