摘要
本文根据气体放电的平均电流密度表达式，通过解麦克斯韦和波关方程，求得了电磁波与气体放电快速产生的等离子体工作用时场的表达式。并对圆极化平面电磁波进行了讨论，得到场的表达式、反射和传输系数。
In this paper consider gas,which is rapidly fonized to form Plasma at time t = 0 and the average current density is approximately denoted as Js =J(r),(e.1-e-A2).This suddenly Created plasma is assumed to be isotropic Cold,lossless,homogeneous and linear.The interaction Of electromagnetic waves with sunddenly-created by gas discharge is thyestigated under the above assumption.The vector wave equation and Maxwell's equation are solved by Laplace transformation,then field expressions are derived.Furthermore,the case Of a Plane wave,which Propagation in same direction with source current is andysed in detail.The refleCtion and transmission coefficients,efficiency Of energy density and Doppler frequency upshift are obtained.When the high frequency electromapotic ware propagate.in a rapidly created underdenae plasma by gas discharge,the influence of plasma can be omitted.If frequency Of prOPagation driromagnetic wave is ho,a rapidly created by gas discharge has a significantly effeCt co propagation Of electromagnetic wave.
出处
《电波科学学报》
EI
CSCD
1996年第2期87-93,共7页
Chinese Journal of Radio Science
基金
国家自然科学基金
关键词
电流密度
等离子体
反射系数
气体放电
电磁波
Average current density,Plasma,the reflection and transmission coefficients
