| 电磁波在周期调制等离子体上的共振反射 |
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| 引用本文： | 吴颖,张端明.电磁波在周期调制等离子体上的共振反射[J].华中科技大学学报(自然科学版),1992(3). |
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| 作者姓名： | 吴颖 张端明 |
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| 作者单位： | 华中理工大学物理系
(吴颖)，华中理工大学物理系(张端明) |
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| 摘 要： | 本文研究了高频电磁波在均匀无磁化等离子体中传播时,由于传播方向上有限区域内存在常幅密度扰动驻波引起的共振折反射现象.从等离子体流体方程组出发,导出适于描述常幅密度扰动驻波影响下的电磁波传播方程;并对各种情况详细求解该方程得到折反射系数的解析表达式.
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| 关 键 词： | 电磁波传播 等离子体 共振反射 |
Resonant Reflection of an Electromagnetic Wave by Plasma Periodic Modulation |
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| Ying Zhang Duanming.Resonant Reflection of an Electromagnetic Wave by Plasma Periodic Modulation[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1992(3). |
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| Authors: | Ying Zhang Duanming |
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| Institution: | Ying Zhang Duanming |
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| Abstract: | Resonant reflection and refraction of a high frequency electromagnetic wave propagating in a homogeneous non-magnetized plasma by a density perturbation standing wave of constant amplitude in a finite region is investigated. The propagation equation of the high frequency electromagnetic wave under the influence of the density perturbation with constant amplitude is derived from plasma fluid equations and Maxwellian equations. The equation governing the slowly varying amplitude of the high frequency wave electric field is obtained under some appropriate approximations. Analytical expressions for the wave electric field and the energy reflection and refraction coefficients are obtained when the Bragg resonant condition between the incident electromagnetic wave and the density perturbation standing wave is exactly or approximately satisfied. |
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| Keywords: | propagation of electromagnetic wave plasma resonant reflection |
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