电磁波在大气层人造等离子体中的衰减特性

Property of electromagnetic wave attenuation in the artificial plasmas of atmosphere

利用洛沦兹模型来研究大气层人造非均匀等离子体的电磁响应特性 ,讨论了电磁波频率、等离子体密度及电子碰撞频率对电磁波衰减特性的影响 .结果表明 ,电磁波在长波长区域及等离子体密度大时 ,其能量衰减越快 .当等离子体密度高时 ,电子温度越低 ,大气层高度越高 ,电磁波的能量衰减越快 .

The electromagnetic property of the artificial plasmas of atmosphere was investigated with the Lorentz model.The effects of the frequency of electromagnetic wave,plasma density,and the electron-neutral collision frequency on the attenuation of electromagnetic wave were discussed.Numerical results indicate that the wave attenuation is stronger at the region of the longer wavelength and the higher plasma density.For the high plasma density,the wave attenuation is stronger at the lower electron temperature,and the higher altitude of atmosphere.