| Numerical study of the effect of water content on OH production in a pulsed-dc atmospheric pressure helium–air plasma jet |
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| 引用本文： | 钱沐杨,杨从影,王震东,陈小昌,刘三秋,王德真.Numerical study of the effect of water content on OH production in a pulsed-dc atmospheric pressure helium–air plasma jet[J].中国物理 B,2016,25(1):15202-015202. |
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| 作者姓名： | 钱沐杨 杨从影 王震东 陈小昌 刘三秋 王德真 |
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| 作者单位： | 1. Department of Physics, Nanchang University, Nanchang 330031, China;2. School of Medical, Nanchang University, Nanchang 330031, China;3. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No. 11465013), the Natural Science Foundation of Jiangxi Province, China (Grant No. 20151BAB212012), and the International Science and Technology Cooperation Program of China (Grant No. 2015DFA61800). |
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| 摘 要： | A numerical study of the effect of water content on OH production in a pulsed-dc atmospheric pressure helium–air plasma jet is presented. The generation and loss mechanisms of the OH radicals in a positive half-cycle of the applied voltage are studied and discussed. It is found that the peak OH density increases with water content in air(varying from0% to 1%) and reaches 6.3×1018m-3when the water content is 1%. Besides, as the water content increases from 0.01%to 1%, the space-averaged reaction rate of three-body recombination increases dramatically and is comparable to those of main OH generation reactions.
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| 收稿时间： | 2015-09-01 |
Numerical study of the effect of water content on OH production in a pulsed-dc atmospheric pressure helium-air plasma jet |
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| Institution: | 1. Department of Physics, Nanchang University, Nanchang 330031, China;2. School of Medical, Nanchang University, Nanchang 330031, China;3. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023, China |
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| Abstract: | A numerical study of the effect of water content on OH production in a pulsed-dc atmospheric pressure helium-air plasma jet is presented. The generation and loss mechanisms of the OH radicals in a positive half-cycle of the applied voltage are studied and discussed. It is found that the peak OH density increases with water content in air (varying from 0% to 1%) and reaches 6.3× 1018 m-3 when the water content is 1%. Besides, as the water content increases from 0.01% to 1%, the space-averaged reaction rate of three-body recombination increases dramatically and is comparable to those of main OH generation reactions. |
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| Keywords: | atmospheric pressure plasma jet OH radicals plasma simulation |
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