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Simulation of transition from Townsend mode to glow discharge mode in a helium dielectric barrier discharge at atmospheric pressure

ISSN号：1674-1056
期刊名称：《中国物理B：英文版》
时间：0
分类：O461[理学—电子物理学;理学—物理] TM912[电气工程—电力电子与电力传动]
作者机构：[1]College of Physics Science & Technology, Hebei University, Baoding 071002, China
相关基金：Project supported by the National Natural Science Foundation of China （Grant Nos. 10805013 and 51077035）, the Funds for Distinguished Young Scientists of Hebei University, China （Grant No. A2012201045） the Key Project of Ministry of Education of China （Grant No. 210014）, the Natural Science Foundation of Hebei province, China （Grant Nos. A2009000149 and A2011201132）, and the Outstanding Youth Project of Education Department of China （Grant No. Y2011120）.

作者：李雪辰[1], 牛东莹[1], 许龙飞[1], 贾鹏英[1], 常媛媛[1]

关键词：介质阻挡放电, 放电模式, 模型模拟, 辉光, 氦气, 常压, 脉冲放电, 电子密度, dielectric barrier discharge, atmosphere pressure glow discharge, discharge mode,Townsend discharge

中文摘要：

The dielectric barrier discharge characteristics in helium at atmospheric pressure are simulated based on a one-dimensional fluid model. Under some discharge conditions, the results show that one discharge pulse per half voltage cycle usually appears when the amplitude of external voltage is low, while a glow-like discharge occurs at high voltage. For the one discharge pulse per half voltage cycle, the maximum of electron density appears near the anode at the beginning of the discharge, which corresponds to a Townsend discharge mode. The maxima of the electron density and the intensity of electric field appear in the vicinity of the cathode when the discharge current increases to some extent, which indicates the formation of a cathode-fall region. Therefore, the discharge has a transition from the Townsend mode to the glow discharge mode during one discharge pulse, which is consistent with previous experimental results.

英文摘要：

The dielectric barrier discharge characteristics in helium at atmospheric pressure are simulated based on a one- dimensional fluid model. Under some discharge conditions, the results show that one discharge pulse per half voltage cycle usually appears when the amplitude of external voltage is low, while a glow-like discharge occurs at high voltage. For the one discharge pulse per half voltage cycle, the maximum of electron density appears near the anode at the beginning of the discharge, which corresponds to a Townsend discharge mode. The maxima of the electron density and the intensity of electric field appear in the vicinity of the cathode when the discharge current increases to some extent, which indicates the formation of a cathode-fall region. Therefore, the discharge has a transition from the Townsend mode to the glow discharge mode during one discharge pulse, which is consistent with previous experimental results.

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