Abstract
Comparative studies of cold plasma jet of generation at atmospheric pressure in helium excited by sinusoidal and unipolar positive pulses voltage at 2-6 kV for medical applications were carried out. It has been shown that the achieved parameters are identical, but the absence of the effect of frequency self-organization of streamer breakdown leading to irregularity in streamer propagation under pulse excitation makes it preferable in biophysical experiments. A limiting factor for plasma jet exposure is the achievable target temperature, which can be reduced by limiting the current duration. Keywords: cold plasma jet, excitation by sinusoidal and pulsed voltage, temperature.
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