Nonthermal plasmas were generated using repetitively operated pulsed power generators, demonstrating the technology's potential in creating discharges relatively easily at atmospheric pressure. Control of plasma jets at atmospheric pressure facilitates a wide range of applications in material modification, medicine, and energy. This paper investigates the effects of gas flow velocity and helium mole fraction on plasma length under dielectric-barrier discharge. Helium gas was used for easy observance of light emission.Index Terms-Dielectric-barrier discharge, gas flow analysis, plasma jet, pulsed power, Schlieren method.
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