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Optical emission spectroscopy and fast, time-resolved imaging are used to assess the plasma parameters in the plasma channel of a pulsed power electrical discharge in gas bubbles. Gas bubbles are produced at the tip of a needle electrode submerged in water. The discharge in Ar, O2, and air bubbles is generated by applying 1 ??s long, 8-20 kV rectangular voltage pulses to the needle electrode. Spectroscopic...
Summary form only given. Pulsed electrical discharges in water find environmental applications in water sterilization and decoloration due to the production of active species, such as ozone, hydrogen peroxide, O, H, and OH radicals. We investigated the production of active species and the decomposition of organic compounds using electrical discharges between horizontal mesh-to-mesh electrodes in water...
Summary form given only. Pulsed electrical discharges in water have been investigated for water decontamination and decoloration. The optimization of the cleaning process requires detailed knowledge of the discharge process, particularly in terms of the formation of active species such as OH, O, and other radicals. Rectangular voltage pulses of 1 mus duration are applied to single Ar or oxygen bubbles...
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