| Electrostatic Instabilities at High Frequency in a Plasma Shock Front |
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| 引用本文： | 吕建红 何勇 胡希伟. Electrostatic Instabilities at High Frequency in a Plasma Shock Front[J]. 中国物理快报, 2007, 24(4): 1000-1003 |
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| 作者姓名： | 吕建红 何勇 胡希伟 |
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| 作者单位： | College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10175025. |
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| 摘 要： |
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| 关 键 词： | 静电学 不稳定性 高频率 等离子碰撞 |
| 收稿时间： | 2006-12-11 |
| 修稿时间： | 2006-12-11 |
Electrostatic Instabilities at High Frequency in a Plasma Shock Front |
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| LV Jian-Hong,HE Yong,HU Xi-Wei. Electrostatic Instabilities at High Frequency in a Plasma Shock Front[J]. Chinese Physics Letters, 2007, 24(4): 1000-1003 |
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| Authors: | LV Jian-Hong HE Yong HU Xi-Wei |
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| Affiliation: | College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074 |
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| Abstract: | New electrostatic instabilities in the plasma shock front are reported. These instabilities are driven by the electro- static field which is caused by charge separation and the parameter gradients in a plasma shock front. The linear analysis to the high frequency branch of electrostatic instabilities has been carried out and the dispersion relations are obtained numerically. There are unstable disturbing waves in both the parallel and perpendicular directions of shock propagation. The real frequencies of both unstable waves are similar to the electron electrostatic wave, and the unstable growth rate in the parallel direction is much greater than the one in the perpendicular direction. The dependence of growth rates on the electric field and parameter gradients is also presented. |
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| Keywords: | 52.35.Tc 52.35.Py |
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