Abstract Discharge characteristics have been investigated in different gases under different pressures using a dielectric barrier surface discharge device. Electrical measurements and optical emission spectroscopy are used to study the discharge, and the results obtained show that the discharges in atmospheric pressure helium and in low-pressure air are diffuse, while that in high-pressure air is filamentary. With decreasing pressure, the discharge in air can transit from filamentary to diffuse one. The results also indicate that corona discharge around the stripe electrode is important for the diffuse discharge. The spectral intensity of N$_2^+$ (391.4 nm) relative to N$_{2}$ (337.1 nm) is measured during the transition from diffuse to filamentary discharge. It is shown that relative spectral intensity increases during the discharge transition. This phenomenon implies that the averaged electron energy in diffuse discharge is higher than that in the filamentary discharge.
Received: 24 October 2006
Revised: 23 April 2007
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos 10575027 and
10647123), the National Science Foundation of Hebei Province, China
(Grant No A2007000134), the Education Department of Hebei Province,
China (Grant No 2006106),
Cite this article:
Li Xue-Chen(李雪辰), Liu Zhi-Hui(刘志辉), Jia Peng-Ying(贾鹏英), Li Li-Chun(李立春), Yin Zeng-Qian(尹增谦), and Dong Li-Fang(董丽芳) Study on the transition from filamentary discharge to diffuse discharge by using a dielectric barrier surface discharge device 2007 Chinese Physics 16 3016
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