Publication details

High-speed camera study of coplanar barrier discharge in air, nitrogen and argon



Year of publication 2006
Type Article in Proceedings
Conference Proceedings of 3rd International Workshop on Microplasmas
MU Faculty or unit

Faculty of Science

Field Plasma physics
Keywords coplanar discharge; high-speed camera
Description Dielectric barrier discharge in coplanar arrangement, operating in air, nitrogen and argon at atmospheric pressure was studied by means of high-speed camera device. Two different electrode configurations were used. First configuration enabled the observation of spatio-temporal development of single discharge event. The discharge consists of narrow channel (microfilament) terminated by expanding area of diffuse plasma. The microfilament is located above the inter-electrode area; diffuse plasma covers the dielectric above the energizing electrodes. The light emission from the discharge in nitrogen and argon is observable even 1000 ns after the breakdown. The microfilament exhibits features of a normal glow discharge, including the negative glow and positive column. The second electrode configuration enabled the observation of two different microfilaments with one common electrode. The formation of diffuse plasma above the common electrode supplied by two independent narrow channels was studied.
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