中国物理B ›› 2007, Vol. 16 ›› Issue (10): 3016-3021.doi: 10.1088/1009-1963/16/10/033
李雪辰, 刘志辉, 贾鹏英, 李立春, 尹增谦, 董丽芳
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)
摘要: 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.
中图分类号: (Glow; corona)