Energy transfer between degrees of freedom of a dusty plasma system

31st International Conference on Equations of State for Matter

Semyonov, V.P.^1,2 ; Timofeev, A.V.^2,3

Moscow Institute of Electronics and Mathematics, National Research University Higher School of Economics, Tallinskaya 34, Moscow

123458, Russia^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13 Bldg 2, Moscow

125412, Russia^2

Moscow Institute of Physics and Technology, Institutskiy Pereulok 9, Dolgoprudny, Moscow Region

141700, Russia^3

关键词: Dust particle;    Dusty plasmas;    Gas-discharge plasmas;    Molecular dynamics simulations;    Near-electrode layers;    Parametric resonance;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012171/pdf
DOI  :  10.1088/1742-6596/774/1/012171

来源: IOP

【 摘 要 】

Dust particles under certain conditions can acquire kinetic energy of the order of 10 eV and higher, far above the temperature of gas and temperatures of ions and electrons in the discharge. Such heating can be explained by the energy transfer between degrees of freedom of a dusty plasma system. One of the mechanisms of such energy transfer is based on parametric resonance. A model of dust particles system in gas discharge plasma including fluctuations of dust particles charge and features of near-electrode layer is presented. Molecular dynamics simulation of the dust particles system is performed. Conditions of the resonance occurrence are obtained for a wide range of parameters.