| A comparative study on continuous and pulsed RF argon capacitive glow discharges at low pressure by fluid modeling | |
Liu, Ruiqiang1,2 ; Liu, Yue1; Jia, Wenzhu1; Zhou, Yanwen3
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| 2017 | |
| 发表期刊 | PHYSICS OF PLASMAS
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| ISSN | 1070-664X |
| EISSN | 1089-7674 |
| 卷号 | 24期号:1 |
| 摘要 | Based on the plasma fluid theory and using the drift-diffusion approximation, a mathematical model for continuous and pulsed radial frequency (RF) argon capacitive glow discharges at low pressure is established. The model is solved by a finite difference method and the numerical results are reported. Based on the systematic analysis of the results, plasma characteristics of the continuous and pulsed RF discharges are comparatively investigated. It is shown that, under the same condition for the peak value of the driving potential, the cycle-averaged electron density, the current density, and other essential physical quantities in the continuous RF discharge are higher than those from the pulsed RF discharge. On the other hand, similar plasma characteristics are obtained with two types of discharges, by assuming the same deposited power. Consequently, higher driving potential is needed in pulsed discharges in order to maintain the same effective plasma current. Furthermore, it is shown that, in the bulk plasma region, the peak value of the bipolar electric field from the continuous RF discharge is greater than that from the pulsed RF discharge. In the sheath region, the ionization rate has the shape of double-peaking and the explanation is given. Because the plasma input power depends on the driving potential and the plasma current phase, the phase differences between the driving potential and the plasma current are compared between the continuous and the pulsed RF discharges. It is found that this phase difference is smaller in the pulsed RF discharge compared to that of the continuous RF discharge. This means that the input energy coupling in the pulsed RF discharge is less efficient than the continuous counterpart. This comparative study, carried out also under other conditions, thus can provide instructive ideas in applications using the continuous and pulsed RF capacitive glow discharges. © 2017 Author(s). |
| 关键词 | Argon Diffusion in liquids Finite difference method Numerical methods Comparative studies Drift-diffusion approximation Ionization rates Numerical results Physical quantities Plasma characteristics Pulsed RF discharge Systematic analysis |
| DOI | 10.1063/1.4974762 |
| 收录类别 | EI ; SCIE |
| 语种 | 英语 |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Fluids & Plasmas |
| WOS记录号 | WOS:000395395100089 |
| 出版者 | American Institute of Physics Inc. |
| EI入藏号 | 20170603323925 |
| EI分类号 | 701.1 Electricity: Basic Concepts and Phenomena ; 804 Chemical Products Generally ; 921.6 Numerical Methods |
| 原始文献类型 | Journal article (JA) |
| 出版地 | MELVILLE |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://ir.cqcet.edu.cn/handle/39TD4454/3091 |
| 专题 | 电子与物联网学院 |
| 作者单位 | 1.Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian; 116024, China; 2.College of Applied Electronics, Chongqing College of Electronic Engineering, Chongqing; 401331, China; 3.School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan; 114051, China |
| 第一作者单位 | 重庆电子科技职业大学 |
| 推荐引用方式 GB/T 7714 | Liu, Ruiqiang,Liu, Yue,Jia, Wenzhu,et al. A comparative study on continuous and pulsed RF argon capacitive glow discharges at low pressure by fluid modeling[J]. PHYSICS OF PLASMAS,2017,24(1). |
| APA | Liu, Ruiqiang,Liu, Yue,Jia, Wenzhu,&Zhou, Yanwen.(2017).A comparative study on continuous and pulsed RF argon capacitive glow discharges at low pressure by fluid modeling.PHYSICS OF PLASMAS,24(1). |
| MLA | Liu, Ruiqiang,et al."A comparative study on continuous and pulsed RF argon capacitive glow discharges at low pressure by fluid modeling".PHYSICS OF PLASMAS 24.1(2017). |
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