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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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
Subjects:
Argon plasma
Fourier transforms
Glow discharges
Iron
Mathematical analysis
Optical emission spectroscopy
Spectral emissivity
Spectrometry
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description 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.
doi_str_mv 10.1039/C0JA00013B
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source Royal Society of Chemistry:Jisc Collections:Royal Society of Chemistry Read and Publish 2022-2024 (reading list)
subjects Argon plasma
Fourier transforms
Glow discharges
Iron
Mathematical analysis
Optical emission spectroscopy
Spectral emissivity
Spectrometry
title Effects of traces of oxygen on Grimm-type glow discharges in argon
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