Time of relaxation in dusty plasma model

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Timofeev, A.V.^1,2,3

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

125412, Russia^1

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

141700, Russia^2

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

123458, Russia^3

关键词: Analysis of simulations;    Analytical approach;    Dust particle;    Dusty plasmas;    Gas discharge;    Horizontal motion;    Non ideals;    Partial equilibrium;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012137/pdf
DOI  :  10.1088/1742-6596/653/1/012137

来源: IOP

【 摘 要 】

Dust particles in plasma may have different values of average kinetic energy for vertical and horizontal motion. The partial equilibrium of the subsystems and the relaxation processes leading to this asymmetry are under consideration. A method for the relaxation time estimation in nonideal dusty plasma is suggested. The characteristic relaxation times of vertical and horizontal motion of dust particles in gas discharge are estimated by analytical approach and by analysis of simulation results. These relaxation times for vertical and horizontal subsystems appear to be different. A single hierarchy of relaxation times is proposed.