Compact Pulsed-Power Driver for Double Pulse Effect Studies in Nanosecond Laser Ablation.

High-voltage double pulse of nanosecond duration (\sim hundreds of nanoseconds) with extremely short interval (\sim tens of nanoseconds) between the pulses can be used to study the double pulse effect in nanosecond laser ablation for laser-induced breakdown spectroscopy. A 0.5-GW compact pulsed-power driver is designed using the transmission line characteristics of the pulse forming line to generate two pulses with extremely short repetition interval. The impedance of the pulsed-power driver is 22 \Omega, and it generates two flat top high-voltage pulses of 100 kV, 100 ns duration with a interpulse repetition interval of 30 ns across the matched load. [ABSTRACT FROM AUTHOR]