任意角入射到非均匀等离子体的WKB法  

The WKB Method of Random Incident Electromagnetic Wave to Nonuniform Plasma

作　　者：夏新仁[1] 尹成友[1] 金贤龙 王守杰 

机构地区：[1]合肥电子工程学院,安徽合肥230037 [2]空军驻合肥地区军事代表室,安徽合肥230000

出　　处：《上海航天》2009年第3期18-20,34,共4页Aerospace Shanghai

基　　金：国家自然科学基金(60671057)

摘　　要：用WKB法研究了以任意角入射的电磁波在非均匀非磁化等离子体中的衰减特性,给出了电磁波在非均匀非磁化等离子体中的双程衰减公式。选用抛物线型等离子体密度分布进行计算,基于等离子体共振吸收概念分析了双程衰减与入射电磁波频率、等离子体碰撞频率、等离子体最大密度和电磁波入射角等的关系。对等离子体隐身研究有一定的参考价值。The attenuation characteristic of electromagnetic waves at an arbitrary angle of incidence by a non-uniform unmagnetized plasma was studied by using WKB method in this paper. The double-pass attenuation formula of electromagnetic waves passing non-uniform unmagnetized was given, the non-uniform plasma density of parabolic profile was selected as an example. Based on considering the concept of resonant reduction, the relationships of the double-pass attenuation of electromagnetic waves with the electromagnetic wave frequencies, the plasma collision frequencies, the maximum plasma density and the angle of incidence were analyzed by comparing. The study was valuabe for implementing plasma stealth.

关 键 词：任意角入射 非均匀 非磁化 等离子体 隐身 

分 类 号：TN011[电子电信—物理电子学]