Study of Atmospheric Pressure Abnormal Glow Discharge

摘要

Atmospheric pressure abnormal glow discharge (APAGD) was carried out simplywith a transformer of 1:500 driven by a alternating current with a frequency of 50 Hz.Typicalstable discharge parameters,namely voltage of 400 V to 850 V and current of 60 mA to 110 mAwere measured by oscillograph.Simulation of the discharge process suggested that the stabledischarge was supported by the impedance from the secondary coil of the transformer,whichoffered a negative feedback to prevent the discharge from turning into an arc.An interpretationwas given for the oscillogram of the sinuous discharge current and square voltage.Furthermore,the electron temperature and electron density averaged in the discharge channel of APAGD wereestimated.