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Diagnostics of Diffuse Coplanar Surface Barrier Discharge Operated in Artificial Air Working Gas: Basic Results

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ČECH Jan HANUSOVÁ Jana SŤAHEL Pavel

Rok publikování 2012
Druh Článek v odborném periodiku
Časopis / Zdroj Chem. listy
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Obor Fyzika plazmatu a výboje v plynech
Klíčová slova DCSBD;diffuse coplanar surface barrier discharge;microdischarges;time resolved imaging;iCCD
Popis We studied statistical behavior of microdischarges of diffuse coplanar surface barrier discharge (DCSBD) operated in nitrogen atmosphere at two input voltage regimes. We measured spectrally unresolved discharge patterns together with discharge electrical parameters using high-speed iCCD camera and digital storage oscilloscope. External synchronization enabled us to measure the discharge pattern during positive and/or negative half-period of input high voltage in the single-shot mode of operation. The comparison of microdischarges behavior during positive, negative and both half periods of input high voltage was performed for two levels of input voltage, i.e. voltage slightly above ignition voltage and high above ignition voltage (\overvoltage"). The number of microchannels crossing discharge gap was counted and compared with number of microdischarge current peaks observed during corresponding half-period of input high voltage. The relations of those incidences was shown and discussed.
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