ABSOLUTE INTENSITIES OF HELIUM LINES AND SPACE RESOLVED ELECTRON DENSITIES AND ENERGIES IN DISCHARGE WITH A HOLLOW CATHODE IN HE:H2O GAS MIXTURE
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Published:2023
Issue:3
Volume:27
Page:71-80
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ISSN:1093-3611
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Container-title:High Temperature Material Processes An International Quarterly of High-Technology Plasma Processes
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language:en
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Short-container-title:High Temp Mat Proc
Author:
Andreev Sergey N.,Bernatskiy Anton V.,Draganov Ivan,Kochetov Igor V.,Ochkin Vladimir N.
Abstract
In a discharge with a hollow cathode the electron energy distribution functions (EEDFs), electron concentration, and absolute intensities of pure helium and helium mixtures with water vapor at pressures of 2-3 mbar were measured. It was shown that under the experiment conditions, the EEDFs were significantly different from the Maxwellian function since the amount of high-energy electrons in the energy range of 7-24 eV was much larger. As the concentration of water molecules in plasma increased, the amount of high-energy electrons decreased. The absolute intensities of a number of helium lines were calculated in coronal model approximation. It was determined that the lines reasonably agreed with the experimental measurements of the absolute intensities.
Subject
Physical and Theoretical Chemistry,Spectroscopy,General Engineering,Energy Engineering and Power Technology,Condensed Matter Physics,General Materials Science
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