等离子体中平面电磁波吸收衰减的数值模拟

Numerical simulation for absorption and attenuation of plane electromagnetic wave in plasma

推导了电磁波在等离子体中吸收衰减的理论公式,建立了非均匀等离子体分层离散的物理模型,利用数值模拟的方法研究了平面电磁波斜入射覆有磁化非均匀等离子体层的金属衬底时的吸收衰减特性,讨论了等离子体层密度为线性分布且磁场强度一定时,电子碰撞频率对电磁波吸收衰减的影响,得出在一定等离子体密度和磁场强度条件下,等离子体对平面电磁波的吸收衰减特性.

The theoretical formula for absorption and attenuation of electromagnetic wave transmitting in plasma is deduced firstly,and then a multi-layer discrete physics model is established for non-uniform plasma.Using numerical method,the characteristics of absorption and attenuation of plane electromagnetic wave,which transmits in non-uniform magnetic plasma with an oblique incidence angle and reflects at a metal substrate adjacent to the plasma,are fully investigated.Finally,discussions are made based on assumption of linear density plasma and a fixed magnetic field conditions.