| DOI: | 10.2172/1056357
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| 报告号: | PPPL-4831
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| 报告题名: | On the Toroidal Plasma Rotations Induced by Lower Hybrid Waves |
| 作者: | Guan, Xiaoyin; Qin, Hong; Liu, Jian; Fisch, Nathaniel J.
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| 出版年: | 2012
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| 发表日期: | 2012-11-14
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | Lower Hybrid Waves
; Transport Theory
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| 中文主题词: | 离子
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| 主题词: | IONS
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| 英文摘要: | A theoretical model is developed to explain the plasma rotations induced by lower hybrid waves in Alcator C-Mod. In this model, torodial rotations are driven by the Lorentz force on the bulk electron flow across flux surfaces, which is a response of the plasma to the resonant-electron flow across flux surfaces induced by the lower hybrid waves. The flow across flux surfaces of the resonant electrons and the bulk electrons are coupled through the radial electric fi eld initiated by the resonant electrons, and the friction between ions and electrons transfers the toroidal momentum to ions from electrons. An improved quasilinear theory with gyrophase dependent distribution function is developed to calculate the perpendicular resonant-electron flow. Toroidal rotations are determined using a set of fluid equations for bulk electrons and ions, which are solved numerically by a fi nite- difference method. Numerical results agree well with the experimental observations in terms of flow pro file and amplitude. The model explains the strong correlation between torodial flow and internal inductance observed experimentally, and predicts both counter-current and co-current flows, depending on the perpendicular wave vectors of the lower hybrid waves. __________________________________________________ |
| URL: | http://www.osti.gov/scitech/servlets/purl/1056357
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/40857
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1056357.pdf（697KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Guan, Xiaoyin,Qin, Hong,Liu, Jian,et al. On the Toroidal Plasma Rotations Induced by Lower Hybrid Waves. 2012-01-01.
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