Charged particles distribution ahead the shock wave front in the electrode discharge plasma

Abstract

Experiments on the interaction of a shock wave with a glow discharge were conducted. It was established that the shock wave propagation is accompanied by a change in the potential of the discharge plasma. The varying potential in the glow discharge plasma causes a distortion of the double probe current. A method is proposed for correcting probe measurements, which consists in the joint processing of two signals obtained in separate experiments with different surface areas of the double probe negative electrode and other conditions being equal. Using this method, the ion current and the change in the space potential are determined. The ion current, determined by the concentration of charged particles, remains unchanged until the shock wave arrival to the measurement point.