| 充等离子体圆柱波导中低频模式特性分析 |
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| 引用本文： | 谢鸿全,刘濮鲲.充等离子体圆柱波导中低频模式特性分析[J].哈尔滨工业大学学报,2006,38(9):1590-1593. |
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| 作者姓名： | 谢鸿全 刘濮鲲 |
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| 作者单位： | 西南科技大学,理学院,四川,绵阳,621010;中国科学院电子学研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金
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四川省教育厅资助项目 |
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| 摘 要： | 利用等离子体流体模型和线性场理论,分别导出了等离子体均匀填充和无限薄环形填充两种条件下,圆柱波导中电磁波传播的色散方程,并分别数值计算了其等离子体低频模式所满足的色散关系.研究发现,在无限薄环形等离子体填充条件下,低频等离子体模式与均匀填充情况有很大差别,不再有无穷多条低频模式的色散曲线,而且其截止频率也不再受到等离子体频率的限制.
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| 关 键 词： | 等离子体 圆柱波导 低频模式 色散关系 |
| 文章编号： | 0367-6234(2006)09-1590-04 |
| 收稿时间： | 2004-11-30 |
| 修稿时间： | 2004年11月30 |
Characteristics of low- frequency modes in a cylindrical waveguide filled with plasma |
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| XIE Hong-quan,LIU Pu-kun.Characteristics of low- frequency modes in a cylindrical waveguide filled with plasma[J].Journal of Harbin Institute of Technology,2006,38(9):1590-1593. |
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| Authors: | XIE Hong-quan LIU Pu-kun |
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| Affiliation: | 1. College of Science, Southwest University of Science and Technology, Mianyang, Sichuan ,621010, China ;2. Institute of Electronics, Chinese Academy of Science, Beijing 100080, China |
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| Abstract: | A cylindrical waveguide filled with an infinitely thin annular plasma or uniform plasma is immersed in a strong longitudinal magnetic field.By means of fluid model and linear field theory,the dispersion equations of the electromagnetic wave propagation along the system in two different plasma-filling cases are derived,respectively.The dispersion characteristics of low-frequency modes in two cases are analyzed accordingly.It is found that the frequency of the low-frequency mode couldn't be confined by plasma oscillation frequency and only a dispersion curve of low-frequency mode lies in the case of the infinitely thin annular plasma-filling. |
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| Keywords: | plasma cylindrical waveguide low-frequency mode dispersion relation |
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