Experiments on propagating and branching positive streamers in air

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

Abstract

The evolution of streamers is known to depend on gas composition and electrode geometry, on polarity and size of the voltage and also on the electric circuit that produces the high voltage pulse. To characterize the phenomena better and to compare with theory, a new larger experimental setup with vacuum enclosure has been built. We here present first results in this setup on positive streamers in air at fixed voltage and varying electrode distance. While next to the emitting anode tip, a similar number of streamers seems to emerge due to multiple branching, more streamers seem to survive over a fixed distance, when the gap is shorter. When lowering the voltage, streamers branch less at all distances from the anode tip or do not branch at all beyond a certain distance.
Original languageEnglish
Title of host publicationProceedings of the XVth International Conference on Gas Discharges and their Applications, 5-10 September, 2004, Toulouse, France
Pages323-326
Publication statusPublished - 2004

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