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Effect of the presence of iron vapors on the volumetric emission of Ar/Fe and Ar/Fe/HZ plasmas

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Abstract

The net volumetric emission coefficient was calculated using the escape factor method for Ar/Fe and Ar/H2/Fe plasmas, at atmospheric pressure, over the temperature range from 3000 K to 30,000 K. The calculation involved 712 lines for Ar I, Ar II, and Ar III, 3481 lines for Fe I, Fe II, and Fe III, and 230 lines for H in the Ar/H2/Fe case. A semiempirical method was used for the determination of line profiles and line broadening. The results show a strong influence of the presence of even traces of iron vapors at low temperatures where the volumetric emission increases by several orders of magnitude. Special attention is given to self-absorption of the argon resonance lines which prevents the radiation from escaping within a few millimeters from the emission source.

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Authors and Affiliations

  1. Plasma Technology Research Centre (CRTP), Department of Chemical Engineering, University of Sherbrooke, J I K-2R 1, Sherbrooke, Québec, Canada

    A. Essoltani, P. Proulx & M. I. Boulos

  2. Centre de Physique Atomique, Université Paul Sabatier, Toulouse, France

    A. Gleizes

Authors
  1. A. Essoltani
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  2. P. Proulx
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  3. M. I. Boulos
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  4. A. Gleizes
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Essoltani, A., Proulx, P., Boulos, M.I. et al. Effect of the presence of iron vapors on the volumetric emission of Ar/Fe and Ar/Fe/HZ plasmas. Plasma Chem Plasma Process 14, 301–315 (1994). https://doi.org/10.1007/BF01447083

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  • DOI: https://doi.org/10.1007/BF01447083

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