Applied Sciences | |
Current Filaments in Asymmetric Surface Dielectric Barrier Discharge | |
Ruggero Barni1  Claudia Riccardi1  Cecilia Piferi1  H.Eduardo Roman1  | |
[1] Dipartimento di Fisica, Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, 20126 Milano, Italy; | |
关键词: surface dielectric barrier discharge; atmospheric pressure non thermal plasma; streamer discharge; | |
DOI : 10.3390/app11052079 | |
来源: DOAJ |
【 摘 要 】
In this study, we examine the statistical properties of asymmetric surface dielectric barrier discharges (SDBD) produced by applying a periodic high voltage between two conducting displaced electrodes, located at the opposite sides of a flat dielectric panel. Here, the asymmetry refers to the fact that the lower electrode is fully covered with an insulating material, while the upper one, glued onto the dielectric surface, is otherwise left exposed to the air. Such a configuration allows the formation of a thin layer of plasma above the insulating surface. A single cycle signal consists of two well-separated half-cycle patterns, denoted as forward and backward strokes, corresponding to positive and negative voltages, respectively. They display a quite complex discharge pattern constituted by a sequence of individual peaks (bursts) of varying current and time duration. Specifically, we find that backward stroke bursts carry a positive mean charge
【 授权许可】
Unknown