Glow discharge in a longitudinal supersonic flow

For the first time, studies of the characteristics of a longitudinal glow discharge in a supersonic gas flow between the Central body and the embarrassment were carried out. It is established that the characteristics of the discharge in terms of spatial localization, radiation intensity, formation of near-electrode zones depend on the ways of organizing the supersonic flow. The characteristics of the gas flow in the expanding region of the supersonic nozzle, the pressure recovery in the embarrassment, the parameters of the supersonic flow failure are studied. If the cathode is used as a Central body in the form of a constantly fed wire of cylindrical profile, then such a discharge can be used in the processes of applying functional coatings and nanocoatings. Due to the concentration of the current spot at the cathode end, intense cathode sputtering will occur. The atomized atoms will be directionally transferred along with the flow and form coatings on the substrates at the entrance to the embarrassment, or the substrate can serve as a discharge anode. © 2019 Federal Informational-Analytical Center of the Defense Industry. All rights reserved.