Study of interaction between the spark discharge and the dielectric substrate surface

Authors: Lozhkin I.V., Bessonov V.R.
Published in issue: #12(89)/2023
DOI: 10.18698/2541-8009-2023-12-954
Category: Physics | Chapter: Plasma physics
Keywords: spark discharge, sliding discharge, low-temperature plasma, dielectric substrate, micro-cracks, micro-relief, spark gap, equivalent circuit
Published: 24.01.2024

The paper considers a method for contactless control of the gas discharges using a solid dielectric substrate. The method consists in artificially applying the micron-sized relief onto the substrate, thereby enhancing the dielectric effect on the gas ionization and breakdown processes. The influence of gaps between the substrate and the electrodes is described, as it eliminates the possibility of an electrical discharge along the dielectric surface. As a result, the unlocking voltage of the gas gap decreases. Conclusions are made on the micro-relief configuration making it possible to change the plasma channel curvature, which could be used to direct the spark discharge trajectory, accelerate and stabilize the air breakdown processes.

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