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 0.2–1 bar in a point-plane geometry with a gap distance of 14 cm and a voltage pulse of 47 kV. 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.
Original language | English |
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Article number | 101502 |
Pages (from-to) | 101502-1/3 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 92 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2008 |