X射线在折射率连续变化等离子体介质中的传播  

X-ray beam propagation in an inhomogeneous plasma with a continuously varied refractive index

作　　者：仇云利[1] 郭弘[1] 刘明伟[1] 唐华[1] 邓冬梅[1] 

机构地区：[1]华南师范大学传输光学实验室,广东广州510631

出　　处：《强激光与粒子束》2004年第5期615-618,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金重点资助课题(69789801);国家863计划项目资助课题;霍英东基金资助课题(71058);广东省自然科学基金团队项目(71058);国家教育部骨干青年教师基金资助课题

摘　　要：　从Maxwell方程出发,得到了X射线光束在非均匀等离子体介质中传播的类衍射积分解,并从理论和数值模拟上着重讨论了折射率梯度效应对光束参数的影响。结果表明,在等离子体电子密度分布较高的区域,梯度效应明显,它直接影响光束的光强分布、衍射效应和光束的偏转程度。From Maxwell's equation a diffraction-integral-like solution of X-ray propagation is derived. The paper puts emphasis, theoretically and numerically, on the analysis of the effect of refractive index gradient on the beam parameters. The results show that the higher is electron density, the effect is more evident. It has a direct impact on the distribution of the beam intensity, the diffraction and the deflection of the X-ray beam.

关 键 词：折射率梯度 类衍射积分 X射线 等离子体 

分 类 号：O434.14[机械工程—光学工程] TN246[理学—光学]