Electric field measurements on plasma bullets in N2 using four-wave mixing

Content Provider	Semantic Scholar
Author	Schans, Marc Van Der Boehm, Patrick Teunissen, Jannis Nijdam, Sander Jzerman, Wilbert L. I. Czarnetzki, Uwe
Copyright Year	2017
Abstract	Atmospheric pressure plasma jets generated by kHz nanosecond voltage pulses typically consist of guided streamer discharges called plasma bullets. In this work, plasma bullets are generated in a pulsed plasma jet using N2 as feed gas and their electric field distribution is investigated by polarization-resolved four-wavemixing. The method and its analysis have been extended to resolve radial profiles of non-uniform, but radially symmetric, electric field distributions. In addition, a calibration procedure using an electrode geometry different from the discharge geometry has been developed. A radially resolved profile of the axial electric field component of a plasma bullet in N2 is presented, as well as the temporal development of the (line-integrated) radial and axial components of the electric field. To verify the results they are compared to a streamer model adapted to the conditions of the experiment. The peak values obtained from the experiment are in the range expected from streamer literature. However, there are some quantitative differences with the model, which predicts values approximately a factor two lower than those found in the experiment, as well as a faster radial decay. The temporal development shows similar features in both the experiment and the model. Explanations for these differences are provided and further improvements for the method are outlined.
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Alternate Webpage(s)	https://pure.tue.nl/ws/portalfiles/portal/88092912/Electric_field_four_wavemixing.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article