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Effects of traces of oxygen on Grimm-type glow discharges in argon

We report results of studies using Fourier Transform Optical Emission Spectroscopy (FT-OES) to investigate the effects of added oxygen (0.04-0.8% v/v) on observed spectra from a Grimm-type glow discharge, generated in argon plasma with a pure iron sample. Significant changes in the sputter rate and...

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Bibliographic Details
Published in:Journal of analytical atomic spectrometry 2011-01, Vol.26 (4), p.766-775
Main Authors: Mushtaq, Sohail, Steers, Edward B. M., Pickering, Juliet C., Gusarova, Tamara, Šmíd, Petr, Weinstein, Viktoria
Format: Article
Language:English
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Summary:We report results of studies using Fourier Transform Optical Emission Spectroscopy (FT-OES) to investigate the effects of added oxygen (0.04-0.8% v/v) on observed spectra from a Grimm-type glow discharge, generated in argon plasma with a pure iron sample. Significant changes in the sputter rate and the intensities of atomic lines of the carrier gas and sample in the presence of oxygen are discussed in detail; these changes are greater than those observed with Ar/H2 and Ar/N2 mixtures. A detailed study of spectral line profiles shows changes in self-absorption of Ar I lines due to O2 and H2 traces. The sputter rate for a given Ar/O2 gas mixture is found not to be proportional to current.
ISSN:0267-9477
1364-5544
DOI:10.1039/C0JA00013B