Issue 4, 2011
From the journal:

Journal of Analytical Atomic Spectrometry

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

Sohail Mushtaq,*a   Edward B. M. Steers,b   Juliet C. Pickering,a   Tamara Gusarova,b   Petr Šmídc  and  Viktoria Weinsteinb  

* Corresponding authors

a Blackett Laboratory, Imperial College, London, UK
E-mail: s.mushtaq@imperial.ac.uk

b London Metropolitan University, North Campus, 166-220 Holloway Road, London, UK

c Nuclear Research Institute Rez plc, Czech Republic

Abstract

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.

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

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Article information

DOI
https://doi.org/10.1039/C0JA00013B
Article type
Paper
Submitted
29 Apr 2010
Accepted
04 Aug 2010
First published
01 Oct 2010

J. Anal. At. Spectrom., 2011,26, 766-775

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

S. Mushtaq, E. B. M. Steers, J. C. Pickering, T. Gusarova, P. Šmíd and V. Weinstein, J. Anal. At. Spectrom., 2011, 26, 766 DOI: 10.1039/C0JA00013B

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