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The physical mechanism for the emergence of ring and semi-ring plasma structures around electrolyte jets in a high-frequency discharge with liquid jet electrodes. It is shown that the electric field strength in the jet flow decay region can reach values of 109-1010 V/m, at which autoelectronic emission is possible, leading to the appearance in the vicinity of the jet of primary electrons, which leads to ionization and excitation of the molecules of the surrounding gaseous medium. Keywords: Plasma-liquid systems, high-frequency discharge, electrolytes, numerical methods.

In this work the experimental research of low temperature plasma of frequency capacitive discharge and constant currents discharge with jet fluid electrodes in pressure range of p = 105 − 103 Pa are presented. The area where the field gradient exceeds the threshold value necessary for temporary use of the steam-gaseous discharges is presented. The plasma radiation spectrum is presented. Estimates on composition of plasma, an electron concentration and temperature of a heavy component are presented.

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