Dusty plasma ionization instability with ion drag

摘要: The effect of ion drag on negatively charged dust grains is considered as a possible mechanism excitation the dust-acoustic (DA) ionization instability. It found that DA waves are more and damped coefficient for drag, μ, increases from zero to critical value, μcrit. For μ>μcrit zero-frequency (nonpropagating) perturbation grows when ions overcomes electric field.