Effect of grounded electrode´s width on electrical characteristics of nanosecond-pulse surface DBD

Surface dielectric barrier discharges with five different grounded electrode´s widths are produced in order to investigate the effect of grounded electrode´s width on electrical characteristics. The electrical parameters including applied voltage, total discharge current and transported charges are measured and calculated, respectively. Results show that the total discharge current has two obvious spikes. The first current spike of the total current has a peak which results in some fluctuations of transported charges in V-Q Lissajous figures, but the peak of the first current spike hardly changes with the electrode´s width. The second spike peak value increases with the electrode´s width, and reaches its maximum at an optimum width. All the V-Q loops at different electrode´s widths are “almond-shape”, and the transported charges and energy per pulse increase with the electrode´s width. The main plasma action area increases with the electrode´s width, but keeps relatively constant when the grounded electrode´s width is larger than the optimum width. In addition, the grounded electrode´s width has no obvious influence on the plasma light intensity.