https://doi.org/10.1140/epjd/s10053-023-00686-6
Regular Article – Plasma Physics
Features of electric field distribution along helium atmospheric plasma jet in stepwise propagation mode of guided streamer
1
Institute for Electrophysics and Electrical Power of the Russian Academy of Sciences, Dvortsovaya Naberezhnaya 18, 191186, Saint-Petersburg, Russia
2
University of Belgrade, Faculty of Physics, Studentski trg 12, 111001, Belgrade, Serbia
3
University of Belgrade, Faculty of Transport and Traffic Engineering, Vojvode Stepe 305, 111000, Belgrade, Serbia
Received:
25
February
2023
Accepted:
26
May
2023
Published online:
16
June
2023
A non-uniform distribution of the electric field along an atmospheric pressure helium plasma jet has been determined using the Stark spectroscopy technique at the stepwise propagation of a guided streamer in a free plasma jet and in the jet interacting with a grounded dielectric target. The plasma jet with guided streamers in the stepwise propagation mode is generated by tailoring applied voltage bunches consisting of a superposition of microsecond bipolar square pulses and damped oscillations. The guided streamer head stops at the oscillating voltage falling slope and then propagates further on the next raising voltage front. The electric field distribution along the jet reflects the dynamics of streamer propagation. The electric field strength decreases at a streamer propagation stagnation phase. The field strengthening at the subsequent raising voltage front accelerates the guided streamer at the second propagation step.
M. E. Pinchuk, G. B. Sretenović, N. Cvetanović and A. A. Dyachenko have contributed equally to this work.
T.I.: Physics of Ionized Gases and Spectroscopy of Isolated Complex Systems: Fundamentals and Applications
Guest editors: Bratislav Obradović, Jovan Cvetić, Dragana Ilić, Vladimir Srećković and Sylwia Ptasinska.
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