Influence of Gas Temperature on Gaseous Products Generated by Coplanar Barrier Discharge in Air and N2/O2 Mixtures


  • V. Mazankova Faculty of Military Technology, University of Defence Brno, Kounicova 65, 662 10 Brno, Czech Republic
  • D. Trunec Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
  • Z. Navratil Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
  • F. Krcma Faculty of Chemistry, Brno University of Technology, Purkyňova 118, 612 00 Brno, Czech Republic
  • A. Zahoranova Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská dolina F1, 842 48 Bratislava, Slovakia



absorption spectroscopy, coplanar barrier discharge, nitrogen oxides, ozone


Absolute densities of gaseous products generated by coplanar dielectric barrier discharge in N2/O2 mixtures and in ambient air were determined by UV optical absorption spectroscopy (OAS). Ozone (O3) and nitrogen oxides (N2O, NO2 and N2O5) were identified as the stable products of the discharge. It was found that the actual product composition strongly depends on the gas temperature. At low input power with the low gas temperature, O3 density was high and the NO2 density was very low. When the input power increased and the gas temperature also increased, then O3 disappeared, while NO2 density started to increase steeply.


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