LAUSR

The atmospheric pressure glow discharge has a good industrial application prospect, but it is difficult to obtain a stable and diffusive atmospheric pressure glow discharge, especially in the large ambient air gap. In this paper, with a transverse magnetic field applied in the pin-to-ring electrode gap, a stable and diffusive atmospheric pressure glow discharge in ambient air was obtained. The influence of different factors such as the output-voltage amplitude of the power supply, the intensity of the external magnetic field, and the different sizes of ring-cathode were studied from the discharge voltage and current waveforms and the discharge morphology. The results show that a more diffusive and bigger-volume glow discharge can be obtained by increasing the amplitude of the output voltage or the intensity of the external magnetic field, and the more uniform and effective glow discharge can be obtained when choosing the smaller pin-to-ring inter-electrode gap.