Relative Residual Charge Distribution and the Corresponding Discharge Image of a Surface DBD

The relative residual charge distribution (RCD) on a dielectric surface due to the discharge created by a single high-voltage pulse was measured using an electrostatic voltmeter equipped with a 2-D scanning system. This distribution was compared with the discharge image recorded with an intensified charge-coupled device camera. The comparison confirmed that the relative RCD reflects the discharge morphology composed of a main discharge channel and branching, while the discharge image provided the relative residual charge distribution on the dielectric surface.