Self-consistent modelling of plasma sheath formation: I. Sheath dynamics in electropositive plasma


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Abstract

A one-dimensional self-consistent particle model for a low-pressure discharge in an electropositive gas near the planar electrode was developed. The model is based on a deterministic particle-in-cell technique with scattering events treated stochastically. The data for simulation were taken from the argon glow discharge. The purpose of the present work was to clarify the role of different electron and ion mobilities in low-temperature plasma on the dynamics of sheath formation. Another task was to suggest sophisticated algorithms, which can be used in more complex computer experiments studying the sheath dynamics near the realistic substrates in mixtures of gases employed for material processing.

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