Laser triggered single streamer in a pin-to-pin coplanar dielectric barier discharge

0326555 - ÚFP 2010 RIV US eng J - Journal Article
Ambrico, P. F. - Ambrico, M. - Šimek, Milan - Colaianni, A. - Dilecce, G. - De Benedictis, S.
Laser triggered single streamer in a pin-to-pin coplanar dielectric barier discharge.
[Laserem spouštěný streamer v koplanárním barierovém výboji v geometrii hrot-hrot.]
Applied Physics Letters. Roč. 94, č. 23 (2009), s. 231501-231501. ISSN 0003-6951. E-ISSN 1077-3118
R&D Projects: GA ČR GA202/08/1106
Institutional research plan: CEZ:AV0Z20430508
Keywords : Coplanar barier discharge * laser * alumina * trapped electrons
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 3.554, year: 2009

The effect of laser light interaction with alumina surface of a single filament coplanar dielectric barrier discharge has been investigated. It has been found that for laser photon energy lower than the pure alumina photoelectron emission threshold, the laser beam was effective in triggering single streamer discharge below regular ignition voltage threshold. This work demonstrates that triggering of the filamentary discharge occurs due to the laser induced extraction of electrons originally trapped by the plasma radiation at the dielectric surface; the trap energy levels lower than the dielectric band gap explain the easier electron detrapping due to incident laser photons.

Byla zkoumána interakce laser-povrchový AC DBD výboj v dusíku za atmosférického tlaku.
Permanent Link: http://hdl.handle.net/11104/0173625