Experimental research of repetitively nanosecond-pulse breakdown in air under non-uniform electric field

Breakdown experiments of point-plane gas gaps were investigated with repetitive burst conditions under variant repetition rates (10, 100, 500 and 1 000 Hz), diverse gap distances (0.5 cm and 1.0 cm) and different gas pressures (0.1~0.4 MPa) respectively. Relations among breakdown delay time, repetitively stressing time, number of applied pulses, and repetition rates were presented. The results indicate that breakdown time lag increases with the decrease of the division between applied electric-field and gas pressure, but repetitively stressing time and applied pulse number change hardly with the division between applied electric-field and gas pressure in the experimental condition. Breakdown time lag and repetitively stressing time decrease with the increase of repetition rate, but applied