光谱学与光谱分析 |
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Study on Spectral Line Profile of Volume Discharge and Surface Discharge in Dielectric Barrier Discharge |
DONG Li-fang, ZHAO Long-hu, WANG Yong-jie, GAO Ye-nan |
College of Physics Science and Technology, Hebei University, Baoding 071002, China |
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Abstract The volume discharge (VD) and surface discharge (SD) were observed in dielectric barrier discharge with a relatively large discharge gap simultaneously by using a high-speed camera. The variations of the spectral line profiles of VD and SD as a function of the discharge parameters were studied by using optical emission spectra. The changes in the width and shift of Ar Ⅰ(2P2→1S5)spectral lines of VD and SD with gas pressure and discharge gap were measured in dielectric barrier discharge in argon. It was found that both the width and shift of SD are bigger than those of VD, indicating that the electron density of SD is higher than that of VD. The width and shift of VD and SD increase with the gas pressure increasing, indicating that the electron density of VD and SD increases with the gas pressure increasing. The width of VD and SD increases with the gas gap d increasing from 3.8 to 4.4 mm, reflecting that the electron density of VD and SD increases with d increasing.
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Received: 2013-04-26
Accepted: 2013-06-28
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Corresponding Authors:
DONG Li-fang
E-mail: donglf@mail.hbu.edu.cn
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