Abstract
The action of positive pulsed corona discharge in air at atmospheric pressure on aluminum thin-film cathode was studied in a 2- to 8-mm-wide gap at 5- to 15-kV voltage, 10- to 15-kHz pulse repetition rate, and pulse amplitude and duration of 10—20 mA and 300—500 ns, respectively. It has been established that, at relatively small average currents of 20—50 μA, the corona discharge near cathode transforms into glow discharge. Due to discharge constriction on a transverse 1-μm scale, the Joule’s heating of a cathode layer can reach up to about 1000 K and produce local erosion of the cathode surface. This mechanism should be taken into account in analysis of the effects accompanying the interaction of discharge plasma with biological objects.
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This work was supported by Academic Excellence Project 5-100 of Peter the Great St. Petersburg Polytechnic University.
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Emelyanov, O.A., Plotnikov, A.P. & Feklistov, E.G. Impact of Pulsed Atmospheric-Pressure Glow Discharge on Nanometer-Thick Aluminum Films. Tech. Phys. Lett. 47, 271–274 (2021). https://doi.org/10.1134/S1063785021030196
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DOI: https://doi.org/10.1134/S1063785021030196