Characteristics of the electromagnetic wave propagation in magnetized plasma sheath and practical method for blackout mitigation  

作　　者：吴翔 张珈珲 董果香 石磊 Xiang Wu;Jiahui Zhang;Guoxiang Dong;Lei Shi(School of Aerospace Science and Technology,Xidian University,Xi'an 710071,China)

机构地区：[1]School of Aerospace Science and Technology,Xidian University,Xi'an 710071,China

出　　处：《Chinese Physics B》2024年第5期489-499,共11页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.12275202,62371372,62101406,and 62001340);China Postdoctoral Science Foundation(Grant Nos.2022M71490 and 2020M673341);the Innovation Capability Support Program of Shaanxi Province,China(Grant No.2022TD-37);the Natural Science Basic Research Program of Shaanxi Province,China(Grant No.2023JC-YB-549)。

摘　　要：“Magnetic window”is considered as an effective method to solve the communication blackout issue.COMSOL software package based on the finite element method is utilized to simulate the propagation of right-handed circularly polarized wave in the magnetized plasma sheath.We assume a double Gaussian model of electron density and an exponential attenuation model of magnetic field.The propagation characteristics of right-handed circularly polarized wave are analyzed by the observation of the reflected,transmitted and loss coefficient.The numerical results show that the propagation of right-handed circularly polarized wave in the magnetized plasma sheath varies for different incident angles,collision frequencies,non-uniform magnetic fields and non-uniform plasma densities.We notice that reducing the wave frequency can meet the propagation conditions of whistle mode in the weak magnetized plasma sheath.And the transmittance of whistle mode is less affected by the variation of the electron density and the collision frequency.It can be used as a communication window.

关 键 词：magnetized plasma sheath communication blackout finite element incident angle whistler wave 

分 类 号：V443.1[航空宇航科学与技术—飞行器设计] O53[理学—等离子体物理] O441.4[理学—物理]