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Pulsed high-voltage discharges induce simultaneously several physical processes (UV light, shock waves) and chemical processes (active species and radicals such as °OH, °H, °O, °HO2, H2O2, O3, etc.), able to degrade harmful organic compounds in wastewater. This paper aims to compare various discharge types (either in the solution volume, or in the gas phase in close proximity to the liquid surface),...
Summary form only given. A subject of consideration is the dynamic of filamentary pulse discharge generated along contact zone of two co-flown gases. Experimental facility consists of blow-down wind tunnel PWT-50, system of the high-voltage pulse-repetitive feeding, and diagnostic equipment (schlieren device; pressure, voltage, current, radiation sensors; spectroscopic system; etc.) Typical parameters:...
This paper deals with the investigation of a method for sustainment of high-power microwave discharge in the installation for natural-gas decomposition. The essence of the method is to provide a generation of auxiliary discharge plasma in the area where the main microwave plasma torch burns. The design of the electrode system of auxiliary discharge resembles that for a coaxial plasmatron that consumes...
This paper presents an experimental study of pre-breakdown discharges in water (usually called ldquostreamersrdquo) and transient breakdown arcs (called ldquosparksrdquo) generated by high voltage pulses, in relation with their potential application to degrade organic molecules for depollution purposes. An experimental set-up is described using semiconductor high voltage switches to produce high voltage...
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