空中点-面拖缆的立体摄影
Stereo-photography of point-plane streamers in air
摘要：
流光放电的标准照片显示的是二维投影。我们在这里提出立体摄影图像，解决他们的三维结构。我们描述的立体设置和评价，我们提出的结果为正流光放电在空气中在0.2 - 1巴的点平面几何形状的间隙距离为14厘米，电压脉冲为47千伏。在这种情况下，发现43度的分支角的近似高斯分布;这些角并不显著地取决于到针的距离或气体压力。
英文摘要：
Standard photographs of streamer discharges show a two-dimensional projection. We here present stereo-photographic images that resolve their three-dimensional structure. We describe the stereoscopic set-up 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 degrees is found; these angles do not significantly depend on the distance from the needle or on the gas pressure.
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