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Micrometer-scale discharge in high-pressure H2O and Xe environments including supercritical fluid

Authors :
Kazuo Terashima
Tsuyohito Ito
Takaaki Tomai
Hideyuki Fujiwara
Masayoshi Sawada
Source :
Journal of Applied Physics. 100:123304
Publication Year :
2006
Publisher :
AIP Publishing, 2006.

Abstract

We generated micrometer-scale discharge in high-pressure H2O and Xe up to supercritical conditions. In our previous paper, we reported the existence of two peculiar features in the breakdown voltages under high-pressure CO2. The first one was the downward shift at the right-hand side of Paschen’s curve above about 2.5MPa, and the second one was the drastic decrease in the breakdown voltages near the critical point. We have experimentally confirmed that these features are also observed in H2O and Xe, even though there are some differences among these materials. Our theoretical fitting involving a density fluctuation term FD agrees well with the experimental results, especially for Xe. We suppose that these unique features are brought about by decreases in the electron-to-particle cross section σ, ionization potential φi, and secondary electron coefficient γ′ and changes in the discharge space.

Details

ISSN :
10897550 and 00218979
Volume :
100
Database :
OpenAIRE
Journal :
Journal of Applied Physics
Accession number :
edsair.doi...........c35fe9a92a296eefe771eb12b6ede070
Full Text :
https://doi.org/10.1063/1.2400802