Electrical conductivity and charge carrier screening in weakly non-ideal argon plasmas

Abstract
A pulsed argon discharge as a stable source of weakly non-ideal plasmas is described in connection with the diagnostic necessities for conductivity measurements. The parameters overlap the range for stationary arcs and allow comparison with measurements in cascade arcs. The measured conductivities are explained using the binary collision model considering collisions with neutrals, excited atoms. A relation between the screening parameter and non-ideality is proposed which should be valid for all elements.

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