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Indexed by:期刊论文

Date of Publication:2011-10-01

Journal:PHYSICS OF PLASMAS

Included Journals:Scopus、SCIE、EI

Volume:18

Issue:10

ISSN No.:1070-664X

Key Words:argon; glow discharges; high-frequency discharges; metastable states; oxygen; photoelectron spectra; plasma diagnostics

Abstract:An atmospheric-pressure capacitive discharge source driven by radio-frequency power supply at 13.56 MHz has been developed experimentally that is capable of producing a homogeneous and cold glow discharge in O(2)/Ar. With respect to the influence of oxygen component when diluted into argon plasma discharge on the discharge characteristics, the measurements of the electrical parameters (impedance, phase angle, resistance, and reactance) are made systematically and the densities of the metastable and resonant state of argon are determined by means of optical emission spectroscopy (OES). It is shown that the admixture of oxygen into argon plasma not only changes the electric characteristics but also alters the optical emission spectra greatly due to strong interaction between the oxygen content and the argon in the plasma environment. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3643224]