A model of the streamer‐induced spark formation based on neutral dynamics
作者:
E. Marode,
F. Bastien,
M. Bakker,
期刊:
Journal of Applied Physics
(AIP Available online 1979)
卷期:
Volume 50,
issue 1
页码: 140-146
ISSN:0021-8979
年代: 1979
DOI:10.1063/1.325697
出版商: AIP
数据来源: AIP
摘要:
The breakdown of a positive point to plane gap in air near atmospheric pressure begins with the formation of a low‐conductivity filament by the space‐charge‐controlled streamer process. Within the filament, the rate of electron attachment exceeds that of ionization, and the external current decreases. However, a sudden rise of current leading to spark breakdown can be observed. The following explanation is proposed. Owing to the current flow the temperature increases within the discharge. A radial flow of neutral species will thus appear, which decreases the neutral density near the discharge axis. In turnE/Nincreases until the ionization rate becomes greater than that of attachment, leading to the final current growth.
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