斜入射电磁波在大气等离子体层中的衰减

Attenuation of Oblique Electromagnetic Wave Propagation in Atmospheric Plasma Layer

基于WKB近似方法,研究了任意角度入射的电磁波在覆盖金属表面的大气等离子体层中的衰减.讨论了适合等离子体隐身的等离子体密度模型,数值计算了电磁波在大气等离子体层中的衰减与大气等离子体层中的负离子、入射角度以及电子碰撞频率之间的关系,并给出了相关参数的电磁波衰减.

The attenuation of oblique electromagnetic wave propagation in atmospheric plasma layer on a good conductor surface is studied by using Wentzel-Kramers-Brillouin （WKB） approximation. The function distribution of plasma density adapted to plasma cloaking technology is discussed. The attenuation is then numerical deduced and its function of the effects of the negative ions, the angle of incidence and electron collision frequency are taken into account. Parameter dependence of the effects is calculated and discussed.