Study on the transition from filamentary discharge to diffuse discharge by using a dielectric barrier surface discharge device |
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| Authors: | Li Xue-Chen Liu Zhi-Hui Jia Peng-Ying Li Li-Chun Yin Zeng-Qian and Dong Li-Fang |
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| Affiliation: | College of Physics Science & Technology, Hebei University, Baoding 071002, China |
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| 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. |
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| Keywords: | dielectric barrier surface
discharge diffuse discharge optical emission spectroscopy |
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