Pictures show that streamer or sprite discharge channels emerging from the same electrode or position sometimes seem to reconnect or merge even though their heads carry electric charge of the same polarity; one might therefore suspect that reconnections are an artifact of the two-dimensional projection in the pictures. We have used stereo-photography of laboratory scale streamer discharges to investigate the full three-dimensional structure of such events. We analyze reconnection, possibly an electrostatic effect in which a late thin streamer reconnects to an earlier thick streamer channel, and merging, a suggested photo-ionization effect in which two simultaneously propagating streamer heads merge into one new streamer. We also investigate the branching lengths and angles in the 3D streamer tree structures.
|Title of host publication||Proceedings of the XIV International Conference on Atmospheric Electricity, 8-12 August 2011, Rio de Janeiro, Brazil|
|Publication status||Published - 2011|
|Event||conference; XIV International Conference on Atmospheric Electricity; 2011-08-08; 2011-08-12 - |
Duration: 8 Aug 2011 → 12 Aug 2011
|Conference||conference; XIV International Conference on Atmospheric Electricity; 2011-08-08; 2011-08-12|
|Period||8/08/11 → 12/08/11|
|Other||XIV International Conference on Atmospheric Electricity|