Time of relaxation in dusty plasma model
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.