The smooth effect of fast electron detection in the positive column in DC glow discharge

Collision electron spectroscopy (CES) which is based on probe diagnosis and allows for the identification of the impurity gas in pure inert gas has provided a new method for gas analysis. Due to the higher electron temperature in the positive column, the negative glow region is frequently selected a...

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Bibliographic Details
Published inAIP advances Vol. 9; no. 9; pp. 095033 - 095033-5
Main Author Sysoev, Sergey
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.09.2019
AIP Publishing LLC
Subjects
Ambipolar diffusion
Diffusion effects
Diffusion rate
Electron energy
Energy dissipation
Gas analysis
Gas pressure
Glow discharges
Optimization
Plasma density
Rare gases
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Summary:Collision electron spectroscopy (CES) which is based on probe diagnosis and allows for the identification of the impurity gas in pure inert gas has provided a new method for gas analysis. Due to the higher electron temperature in the positive column, the negative glow region is frequently selected as the optimization for gas analysis in DC discharge operated at a relatively high gas pressure. In this paper, the effect of ambipolar diffusion of fast electrons, and the importance of ambipolar diffusion considered as a deep influence on the resolution of fast penning electrons in the positive column, have been verified by designed experiment. It was found that the increase in plasma density has an energy loss effect on fast electrons, resulting a smooth effect on fast electron detection at pressures of about few hundred Pascals.
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ISSN:2158-3226
2158-3226
DOI:10.1063/1.5121807