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Indexed by:期刊论文

Date of Publication:2019-05-01

Journal:PHYSICS OF PLASMAS

Included Journals:EI、SCIE

Volume:26

Issue:5

ISSN No.:1070-664X

Key Words:Argon; Atmospheric pressure; Carrier concentration; Electric discharges; Electron density measurement; Electron wave tubes; Light emission; Optical emission spectroscopy; Optical signal processing; Plasma diagnostics; Surface waves, Argon plasmas; Axial profiles; Collision frequency; Emission intensity; Gas temperature; Pulse modulated; Stark broadenings; Theoretical modeling, Gas discharge tubes

Abstract:The axial profiles of the pulse modulated atmospheric pressure surface-wave argon plasma confined in discharge tubes of different diameters are measured by means of optical emission spectroscopy with respect to the emission intensity, gas temperature, and electron density and temperature. Then, the role of the discharge tube is investigated with respect to its diameter. Furthermore, a simplified theoretical model for high collision frequency is proposed for analysis of the experimental results of electron density obtained by the Stark broadening technique, achieving a good agreement between them for discharge tubes of different diameters.