Title :
Compact Pulsed-Power Driver for Double Pulse Effect Studies in Nanosecond Laser Ablation
Author :
Sharma, Sanjay Kumar ; Deb, P. ; Kumar, Ravindra ; Sharma, Ashok ; Shyam, A.
Author_Institution :
Energetics & Electromagn. Div., Bhabha Atomic Res. Centre, Visakhapatnam, India
Abstract :
High-voltage double pulse of nanosecond duration (~ hundreds of nanoseconds) with extremely short interval (~ 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 Ω, 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.
Keywords :
laser ablation; pulse compression; pulsed power supplies; transmission lines; compact pulsed-power driver; double pulse effect; high-voltage double pulse; laser-induced breakdown spectroscopy; matched load; nanosecond laser ablation; power 0.5 GW; pulse forming line; resistance 22 ohm; time 100 ns; time 30 ns; transmission line characteristics; voltage 100 kV; Capacitors; Gas lasers; Laser ablation; Laser excitation; Plasmas; Pulse transformers; Rubber; Laser ablation; pulse compression circuit; transmission line;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2013.2254725
