Observing Three-Dimensional Structures of Streamer Discharge Channels

Three-dimensional structures of atmospheric and underwater streamer discharges are reconstructed using a newly developed 3-D observation method based on stereophotography. In this method, a streamer discharge is captured from three directions simultaneously. The advantage of the foregoing is the 3-D reconstruction with the least uncertainty of the 3-D coordinate and easy pairing of identical streamer channels between the two photographs taken from different directions. Reconstructed 3-D structures exhibit all characteristic morphological properties of streamer channels such as branching and zigzag-shaped paths.