Study of characteristics of the low-temperature plasma source based on the piezotransformer

In this paper, we study a compact source of low-temperature atmospheric pressure plasma created on the basis of a piezoelectric transformer as a high voltage source. This device can operate as a direct piezo discharge in the atmosphere, a classical dielectric barrier discharge and a discharge in a noble gas flow. We obtained estimates of the rotational and vibrational temperatures of the N2 ions and the temperature of the electrons in the discharge from the emission spectra for various operating modes of the source. When source was operating on two types of loads (metal and liquid), the distribution of the electric field strength near the discharge gap was obtained using the probe operating on the Pockels effect. The possibility of using this device to influence biological objects, as well as the creation of plasma-activated media is discussed.

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