The two-dimensional spectroscopic investigation of the development of the coplanar barrier discharge in synthetic air at atmospheric pressure

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Authors

HODER Tomáš ŠÍRA Martin KOZLOV Kirill Vadimov WAGNER Hans-Erich

Year of publication 2007
Type Article in Proceedings
Conference Proceedings of XXVIII International Conference on Phenomena in Ionized Gases
MU Faculty or unit

Faculty of Science

Citation
Field Plasma physics
Keywords coplanar barrier discharge cross-correlation spectroscopy
Description The evolution of the luminosity of the coplanar barrier discharge in the single-filament mode was studied by the technique of cross-correlation spectroscopy. The 2D spatially and temporally resolved luminosity of the second positive system of molecular nitrogen (at 337.1 nm) was recorded. From these experimental data, the propagation of the cathode-directed ionizing wave is clearly seen. Experimentally observed luminosity distribution provides supporting evidence for the existence of an electron cloud over the anode. Behaviour of the radial dimensions of the microdischarge depending on the axial coordinate is discussed. It is shown that the radial size of the microdischarge is the smallest in the interelectrode space and increases towards both electrodes. The 2D luminosity distributions for the coplanar barrier discharge are compared with the corresponding experimental results obtained for the volume barrier discharge.
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