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Influence of copper thin film as an electrode on the DC electrical breakdown in the presence of Ar and air

Published online by Cambridge University Press:  03 August 2012

K. Yasserian ,
R. Zaresirous  and
A. Hojabri
K. Yasserian*
Affiliation:
Department of Physics, Karaj Branch, Islamic Azad University, Karaj, Iran
R. Zaresirous
Affiliation:
Department of Physics, Karaj Branch, Islamic Azad University, Karaj, Iran
A. Hojabri
Affiliation:
Department of Physics, Karaj Branch, Islamic Azad University, Karaj, Iran
*
ae-mail: [email protected]
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Abstract

Electrical breakdown for low pressure argon gas and air, using copper thin films as the electrodes, was investigated. A specially designed cathode was built from copper thin film deposited on glass by a magnetron sputtering system creating the breakdown between those electrodes. The left side of Paschen’s curve and ionization coefficient η as well as the effective electron emission coefficient γ was obtained with respect to the variation of reduced electric fields for argon gas and air for different thin films thicknesses. It is concluded that reducing the thin film thickness as an electrode leads to a decrease of breakdown voltage and amplifying secondary electron emission. In addition, the influence of the gas type on dependence of breakdown characteristics on the electrode thickness was investigated.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 59 , Issue 1 , July 2012 , 10801
Copyright
© EDP Sciences, 2012

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