Stereo-photography of streamers in air

2008/02/25 by S. Nijdam, Sander Nijdam, J. S. Moerman +6 · 3 citations
Engineering · Physics and Astronomy · #Aerosol Filtration and Electrostatic Precipitation #Combustion and flame dynamics #Electrohydrodynamics and Fluid Dynamics #physics.plasm-ph

paper · pdf · doi:10.1063/1.2894195

published as Appl. Phys. Lett. 92, 101502 (2008) · 5 pages, 5 figures, accepted by Applied Physics Letters for publication on March 10th 2008

arxiv created 2008/02/25 · openalex publication_date 2008/03/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

Standard photographs of streamer discharges show a two-dimensional projection. Here, we present stereophotographic images that resolve their three-dimensional structure. We describe the stereoscopic setup and evaluation, and we present results for positive streamer discharges in air at 0.2–1bar in a point-plane geometry with a gap distance of 14cm and a voltage pulse of 47kV. In this case, an approximately Gaussian distribution of branching angles of 43°±12° is found; these angles do not significantly depend on the distance from the needle or on the gas pressure.

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• Positive and negative streamers in ambient air: measuring diameter, velocity and dissipated energy
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