Intersection of Paschen's curves for argon

The intersection of Paschen's curves for argon with a same gap length but a different electrode radius was observed. While the breakdown voltage increases with the increase of the nonuniformity in the electric field of the gap at lower pressures, it decreases at higher pressures. The reason for...

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Veröffentlicht in:Physics of plasmas 2016-09, Vol.23 (9)
Hauptverfasser: Fu, Yangyang, Yang, Shuo, Zou, Xiaobing, Luo, Haiyun, Wang, Xinxin
Format: Artikel
Sprache:eng
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Zusammenfassung:The intersection of Paschen's curves for argon with a same gap length but a different electrode radius was observed. While the breakdown voltage increases with the increase of the nonuniformity in the electric field of the gap at lower pressures, it decreases at higher pressures. The reason for the intersection of Paschen's curves was given based on the mean free path length of the electrons inversely proportional to the gas pressure and the electron impact ionization coefficient exponentially increasing with the electric field. The intersection of the Paschen's curves was qualitatively reproduced by a numerical simulation.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4962673