不均匀等离子体对超高频微波吸收特点的研究  

Study on the Absorption Characteristics of Ultra-High Frequency Microwave by Inhomogeneous Plasma

作　　者：许玉琪 王琦 吴成国 吴海涛 蔡宏宇 李霞 

机构地区：[1]陆军工程大学,江苏 南京

出　　处：《现代物理》2020年第5期86-93,共8页Modern Physics

摘　　要：在构建等离子体与电磁波相互作用的几何模型基础上,利用WKB近似方法得出了吸收衰减公式。结合Matlab数值模拟,讨论了不同入射角超高频微波与等离子体碰撞频率、等离子体峰值密度之间的相互影响和作用机理。通过计算结果发现,当等离子体分布呈抛物线分布时,对入射超高频微波的吸收效果最好。Based on the geometric model of the interaction between plasma and electromagnetic wave, the absorption attenuation formula is obtained by using the WKB approximation method. The inter-action and mechanism of interaction between electromagnetic waves and plasma collision fre-quency and plasma peak density at different incident angles are discussed. The result illustrates that the wave attenuation is stronger when the plasma density presents a parabolic distribution.

关 键 词：电磁波 非磁化等离子体 衰减 隐身 

分 类 号：G63[文化科学—教育学]