Abstract
The results of an experimental study of an alternating current discharge with a frequency of 50 Hz in a gas-liquid medium of a 1% of NaCl solution in distilled water with air bubbles and microdischarges inside a dielectric tube with a diameter of 10 mm at reduced pressures for various interelectrode distances of copper electrodes—50, 100, and 150 mm—are presented. A qualitative mechanism for the development of a breakdown and discharge at low pressures in a gas-liquid medium is established. It is found that with a decrease in pressure, a gas-liquid medium is formed, saturated with small air bubbles ranging in size from 1 to 3 mm as a result of boiling and electrolysis. This, in turn, leads to a breakdown and rapid discharge ignition in a porous medium near a solid electrode. The transition of an electric discharge with microdischarges to a volumetric discharge at low pressures is established. A fast Fourier transform was carried out, and the discharge voltage and current spectra were determined at reduced pressures.
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Valiev, R.I., Khafizov, A.A., Bagautdinova, L.N., Gaisin, F.M., Basyrov, R.Sh., Gaisin, Az.F., and Gaisin, Al.F., High Temp., 2022, vol. 60, suppl. 1, p. S127.
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The study was supported by a grant from the Russian Science Foundation (project no. 21-79-30062).
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Khafizov, A.A., Valiev, R.I., Bagautdinova, L.N. et al. AC Electric Discharge in a 1% Sodium Chloride Solution in Distilled Water at Low Pressures. High Temp 60, 570–573 (2022). https://doi.org/10.1134/S0018151X22020067
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DOI: https://doi.org/10.1134/S0018151X22020067