TOWNSEND BREAKDOWN ON DIELECTRIC BARRIER DISCHARGE OF COPLANAR GEOMETRY

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Authors

MORÁVEK Tomáš NAVRÁTIL Zdeněk ČECH Jan RÁHEĽ Jozef

Year of publication 2014
Type Article in Proceedings
Conference HAKONE XIV, 2014 Zinnowitz Germany, Book of Contributions
MU Faculty or unit

Faculty of Science

Citation
Field Plasma physics
Keywords Townsend; breakdown; plasma;barrier discharge;coplanar
Description Experimental data presented in our contribution provide a compelling evidence of generating Townsend-mechanism controlled breakdown in barrier discharge of coplanar geometry, which is known to have a highly non-uniform electric field that favors the streamer breakdown. When pure rare gases of helium or neon were used, a slow, wide front ionization avalanche is formed and propagates over both positive and negative electrode. Time resolved images of the avalanche propagation recorded by high speed ICCD camera and single photon counting are presented, correlated with the instantaneous discharge current.
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