The paper describes the results of investigations of low-current discharges in a gas flow at atmospheric pressure. The primary focus is on glow discharges in coaxial plasmatrons and the so-called gliding arc. Such discharges are typically used for obtaining a plasma jet at the exit of the electrode system. The jet contains active chemical species playing an important role in various applications of the discharge. Plasma-assisted combustion and oxidation of hydrocarbon fuels is also considered. Besides, the applications of plasma jet for modification of surfaces and for use in biology and medicine are discussed.
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