外加恒定正交电磁场的等离子体中电磁波透射特性研究  

Analysis of Transmission of Microwaves through an EB Plasma Layer

作　　者：李勇[1] 李磊[1] 

机构地区：[1]南京邮电大学电子科学与工程学院,南京210023

出　　处：《信息化研究》2014年第1期32-35,共4页INFORMATIZATION RESEARCH

基　　金：国家自然科学基金(60671065)

摘　　要：本研究在等离子体层外加恒定正交的电场与磁场,并采用线极化波进行垂直入射,计算不同条件下的功率透射系数。当外加磁场增强时,功率透射系数明显增强;当外加的电场强度大到可以忽略电磁波的电场对介质的影响时,功率透射系数相比与没有加电场的情况下有明显提升。仿真实验表明,电子密度大小、等离子体层的厚度、入射波频率、外加磁场大小以及电场的方向等是功率透射系数的主要影响因素。In this paper, by adding constant electric field and magnetic field outside the plasma layer, and applying vertical incident linear polarized wave, the calculation of transmission coefficient in different conditions is performed. It shows that transmission coefficient increases with the growth of magnetic field intensity. As compared with the condition that there is no external electric field, when the external electric field intensity is so large that the effect of electric field of the incident wave on dielectric layer can be ignored, the transmission coefficient increases obviously. The simulated results demonstrate that factors including electron density, thick- ness of plasma layer, the incident wave frequency, external electromagnetic field and its direction have effects on transmission coefficient.

关 键 词：等离子体特性 透射系数 电磁波 

分 类 号：O539[理学—等离子体物理]