High-voltage pulsed plasma generation with frequency control for streamer initiation in liquid phase

Abstract

Plasma streamers are produced utilizing a high-voltage pulse generator with variable peak-potential difference for up to 20 kV with 200 mJ of pulse energy, 15 microsecond rise time, and adjustable pulse frequency in the range between 1 Hz and 1.5 kHz for corona streamer initiation in liquid phase. The pulsed plasma generator is tested in a pin-to-plate electrode geometry in a sealed reactor filled with deionized water. Streamer geometry information and the resulting electrical waveforms are presented, in addition to quantitative description of temperature variation with respect to pulse frequency and electrical power applied. It is observed that consistent streamers without significant variation in length are obtained within the frequency range analyzed.