Optical and electrical characteristics of a single surface DBD micro-discharge produced in atmospheric-pressure nitrogen and synthetic air

0360380 - ÚFP 2012 RIV GB eng J - Journal Article
Šimek, Milan - Prukner, Václav - Schmidt, Jiří
Optical and electrical characteristics of a single surface DBD micro-discharge produced in atmospheric-pressure nitrogen and synthetic air.
Plasma Sources Science & Technology. Roč. 20, č. 2 (2011), 025009-025009. ISSN 0963-0252. E-ISSN 1361-6595.
[European Sectional Conference on Atomic and Molecular Physics of Ionized Gases (ESCAMPIGXX)/20th./. Novi Sad, SERBIA, 13.07.2010-17.07.2010]
R&D Projects: GA ČR GA202/08/1106
Institutional research plan: CEZ:AV0Z20430508
Keywords : surface barier discharge * streamer
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 2.521, year: 2011
http://iopscience.iop.org/0963-0252/20/2/025009/pdf/0963-0252_20_2_025009.pdf

Basic opto-electrical characteristics of a single micro-discharge generated in a surface DBD reactor with a coplanar electrode arrangement were studied with nanosecond time resolution. The discharge electrode geometry based on machinable glass–ceramic was optimized in order to get a system free of the circulating dielectric liquids that are frequently used to insulate and cool metallic electrodes. The build-up and decay of UV–vis–NIR emission by a single micro-discharge unaffected by concurrent or preceding discharge events was inspected during the first 10 µs of the micro-discharge evolution in nitrogen and in synthetic air. Obtained emission waveforms show a great similarity between the surface and volume streamers. The streamer volume-averaged N2(A) concentrations of ~8 x 1014 cm−3 were estimated at t = 1 µs decay time and concentrations of ~(2–4) x 1015 cm−3 were estimated during the streamer propagation phase in nitrogen.
Permanent Link: http://hdl.handle.net/11104/0197949