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Spectral characteristics of a barrier discharge in cadmium dihalide vapor-inert gas mixtures

  • Spectroscopy of Atoms and Molecules
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Abstract

Spectral characteristics of a barrier-discharge plasma produced in atmospheric-pressure mixtures of cadmium diiodide and cadmium dibromide vapors with neon, krypton, and xenon at a repetition rate of sine voltage pulses up to 130 kHz are studied. The emission from the discharge is studied within the spectral range 200–900 nm with a resolution of 0.05 nm. Emission of exciplex molecules CdI(B → X) and CdBr(C, B → X), and cadmium and inert gas atoms is revealed, as well as emission of exciplex molecules XeI(B → X, A) and XeBr(B → X, A) in xenon-containing mixtures. The emission of xenon halides prevails in the spectra at a mixture temperature up to 200°C. With a further temperature increase, the emission of cadmium halides becomes dominating. It is ascertained that the most intense emissions of CdI(B → X) and CdI2/CdBr2/Xe/Kr and CdBr(B → X) molecules are observed, respectively, in CdI2/CdBr2/Xe/Kr and CdI2/CdBr2/Xe mixtures. The cadmium dihalide-inert gas mixtures are of interest for the use as a radiating gas in a multiwavelength and broadband excilamp emitting in the UV and visible spectral ranges.

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Authors and Affiliations

  1. Uzhgorod National University, Uzhgorod, 88000, Ukraine

    M. M. Guivan & A. N. Malinin

Authors
  1. M. M. Guivan
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  2. A. N. Malinin
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Correspondence to M. M. Guivan.

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Original Russian Text © M.M. Guivan, A.N. Malinin, 2007, published in Optika i Spektroskopiya, 2007, Vol. 103, No. 4, pp. 541–545.

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Guivan, M.M., Malinin, A.N. Spectral characteristics of a barrier discharge in cadmium dihalide vapor-inert gas mixtures. Opt. Spectrosc. 103, 521–525 (2007). https://doi.org/10.1134/S0030400X07100025

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  • DOI: https://doi.org/10.1134/S0030400X07100025

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