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P: Fachverband Plasmaphysik

P 18: Poster Session- Plasma Technology

P 18.4: Poster

Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof

Timing and reproducibility of pin to plate pulsed nanosecond discharges in air and water — •Emile Carbone¹, Bang-Dou Huang^1,2, Yi-Kang Pu², and Uwe Czarnetzki¹ — ¹Institute for Plasma and Atomic Physics, Ruhr-University Bochum, 44780 Germany — ²Department of Engineering Physics, Tsinghua University, Beijing 100084, People’s Republic of China

In this contribution, we present initial investigations of nanosecond pulsed DC discharges in air and water. One of the main challenges to perform diagnostics on such discharges is to obtain reproducible discharges pulse to pulse and with low jitter. Discharges generated by two different home made pulsed DC power supplies are investigated and characterized by voltage and current measurement. The pulsed power supplies allow to deliver voltage pulses of about 10kV with rise times of about 2 or 50 ns, on-times of 10 or 200 ns and variable pulse repetition rates. Sub-nanosecond time and wavelength resolved optical emission spectroscopy measurements are performed with a streak camera. The measurements allow to probe the ignition and afterglow dynamics of the pulsed discharge with high temporal resolution.