Investigation of a High-Pressure Short-Arc Xenon Discharge at Different Electrode Surface Shapes with Taking into Account Emission of Cathode Material into a Plasma

The work is devoted to the study of a high-pressure short-arc xenon discharge, namely, its modeling taking into account the evaporation of thorium into the discharge volume with a different shape of the working surface of electrodes. The reason for the presence of thorium atoms in the discharge plas...

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Bibliographic Details
Published in:High energy chemistry 2023-10, Vol.57 (Suppl 1), p.S125-S131
Main Authors: Timofeev, N. A., Solikhov, D. K., Sukhomlinov, V. S., Mukharaeva, I. Y.
Format: Article
Language:English
Subjects:
Cathodes
Chemistry
Chemistry and Materials Science
Discharge
Electric arcs
Electrode materials
Electrodes
High pressure
Light sources
Optical radiation
Physical Chemistry
Spatial distribution
Thorium
Ultraviolet radiation
Xenon
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Summary:The work is devoted to the study of a high-pressure short-arc xenon discharge, namely, its modeling taking into account the evaporation of thorium into the discharge volume with a different shape of the working surface of electrodes. The reason for the presence of thorium atoms in the discharge plasma is tungsten cathodes doped with thorium, which are used in high and ultrahigh pressure xenon arc light sources. The strong influence of thorium atoms and the shape of the electrode surface on the electrokinetic characteristics of plasma is shown, manifested in changes in the composition and spatial distribution of plasma particles, in particular, xenon and thorium ions, which also significantly affects the generation of optical radiation. The presented results allow us to obtain radiation mainly in the ultraviolet, visible and/or infra-red regions of the spectrum.
ISSN:0018-1439
1608-3148
DOI:10.1134/S0018143923070524