Abstract

Diffuse discharge excited by nanosecond-pulse discharge in atmospheric air has a promising application. Unipolar repetitive pulses with 25-ns rise time and 40-ns duration are used to produce the diffuse discharge in a point-to-plane gap in atmospheric air. The effect of pulse repetition frequency (PRF) on the discharge is investigated under two gap spacings. The discharge images show that both the PRF and air gap spacing are responsible for the diffuse discharge mode and the transition to a filamentary discharge.

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