A model of interactions between ions and neutrals in the high electric field is proposed and the exact solution to the Boltzmann equation with the interaction terms is derived. It is shown that the solution produces the known dependence of the ion drift velocity and the mobility on the parameters of the plasma and neutrals in the high electric field. Experimental results on mobilities of N2+ ions in the parent gas are studied by using the formula of the drift velocity obtained in our model. As an application, the presheath formation at the plasma–wall boundary is discussed and a comparison with experimental measurements of sheath potential profiles has been performed.
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Ikuo Senda (1997) studied this question.
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