【摘要】 目的研究太赫兹波在非均匀磁化等离子体中的衰减特性。方法运用WKB近似法分析太赫兹波斜入射非均匀磁化等离子体后的衰减特征。结果当入射角度增大时,衰减增大;当碰撞频率增大时,衰减变小;外加磁场强度增大时,衰减的最大值向着太赫兹波频率较高的方向移动;电子密度峰值增大时,衰减增大。结论可以通过调节外加磁场强度、等离子体电子密度和碰撞频率,使得太赫兹波在等离子体中传播的过程中衰减发生变化,为太赫兹雷达反等离子体隐身技术提供重要参考。更多还原

【Abstract】 Objective To study the attenuation characteristics of terahertz wave in inhomogeneous magnetized plasma. Methods The attenuation characteristics of terahertz wave inhomogeneous magnetized plasma with oblique incidence were analyzed with the WKB approximation method. Results The attenuation increased with the increase of the incident angle, and decreased with the increase of the collision frequency. When the intensity of external magnetic field increased, the maximum attenuation moved towards the higher frequency of terahertz wave. The attenuation increased with the increase of peak value of electron density. Conclusion The adscititious magnetic field intensity, the plasma electron density and the collision frequency can be adjust to change the attenuation process of THZ wave propagation in plasma to provide a valuable reference for the plasma stealth technology.更多还原