Effect of Initial Velocity of Ion on Plasma Sheath Thickness

The effect of initial velocity of ion on plasma sheath thickness was investigated in theory. Based on theoretical formula and numerical simulation, dependence of plasma sheath thickness on initial velocity of ion was further evaluated. Particularly, under 3.2 eV initial energy of ion, the PIC simulation was applied to deal with space-charge-limited current density. It is found that the model results are in good agreement with those calculated by the PIC simulation.