Streamer propagation along insulating surfaces |
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Authors: | Allen NL Mikropoulos PN |
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Affiliation: | Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol.; |
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Abstract: | Results concerning the propagation of streamers along insulating surfaces under uniform electric field are presented. The basic properties of streamers, namely the electric field required for a stable propagation and the propagation velocity, have been measured and compared with propagation in air alone as a reference. The results have shown that in the experimental arrangement used significant space charges due to streamer branching are absent, therefore the properties observed are considered as characteristic of a single streamer. Streamers propagate stably with an intrinsic propagation field and a characteristic velocity that depend on the nature of the insulating material. For electric fields higher than the minimum field required for a stable propagation, a streamer system propagates with a `surface' and an `air' component |
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