摘要
研究平面电磁波在等离子体中的非线性吸收衰减.首先应用电磁波在等离子体中传播的极化理论得到非线性介电函数,进而求出了考虑非线性情况下的波矢.采用垂直入射具有金属衬底的均匀等离子体模型,对不同入射频率的电磁波的衰减以及总出入射功率比进行了数值模拟.与只考虑线性情况的结果作了比较,结果显示非线性项在研究过程中所起的作用是不可忽视的.
Nonlinear absorption and attenuation of electromagnetic plane wave in plasma are investigated. We employ a polarization theory of plane electromagnetic wave in plasma to obtain a nonlinear dynamic dielectric function. The wave vector is obtained considering linear and nonlinear effects. In a model with vertical incidence of plane electromagnetic wave into plasma slabs with metal underlay, the attenuation of electromagnetic wave and reflected power are deduced. It shows that the nonlinear effects should be considered.
出处
《计算物理》
EI
CSCD
北大核心
2006年第6期661-664,共4页
Chinese Journal of Computational Physics
基金
国家自然科学基金(10375007)资助项目
