Compton散射对时变非磁化等离子体光子晶体禁带的影响  

Influences on the band gap of time-varying un-magnetized plasma photonic crystals produced by Compton scattering

作　　者：郝晓飞[1] 孔银昌[2] 郝东山[1] 

机构地区：[1]黄淮学院信息工程系,河南驻马店463000 [2]黄淮学院科研处,驻马店463000

出　　处：《核聚变与等离子体物理》2012年第1期27-31,共5页Nuclear Fusion and Plasma Physics

基　　金：河南省基础与前沿技术研究基金资助项目(092300410227)

摘　　要：应用多光子非线性Compton散射模型和时域有限差分法,对Compton散射对时变非磁化等离子体光子晶体禁带的影响进行了研究,提出了将多光子非线性Compton散射电磁波和入射电磁波作为等离子体光子晶体产生光子禁带的新机制,给出了电磁场的Maxwell方程组和叠代方程的修正方程,并进行了数值模拟。结果表明,Compton散射使等离子体禁带宽随等离子体上升时间的增大比散射前有明显减小而最后趋于定值,均匀等离子体透射率峰值比线性等离子体增大得更多,利用Compton散射可实现对光子禁带的控制。Using the model of multi-photon nonlinear Compton scattering and finite-difference time-domain （FDTD）analysis, the influences on the band gap of time-varying un-magnetized plasma photonic crystals induced by Compton scattering have been studied, and a new mechanism of the photonic band gap induced by the multi-photon nonlinear Compton scattering optical and incident electromagnetism wave has been advanced, and the amending equations of Maxwell equation group on electromagnetic field and the iteration equation have been given out and simulated. The results show that the widths of the plasma band gap are clearly decreased along with the increase of the plasma climb time than before the scattered by the multi-photon nonlinear Compton scattering optical, and these widths will finally be constants. The increases of the transmission crests of the homogeneous distribution plasma are bigger than the increases of the transmission crests of the linear distribution plasma, and the control to the photonic band gap can be reached through using Compton scattering.

关 键 词：时域有限差分法 非磁化等离子体光子晶体 禁带 多光子非线性COMPTON散射 

分 类 号：V414.1[航空宇航科学与技术—航空宇航推进理论与工程]