电子束横向空间及动量分布演化的统计动力学研究  

A Statistical Dynamics Study on the Evolution of the Spatial and Momentum Distribution of Electron Beams

作　　者：刘学东[1] 唐天同[1] 

机构地区：[1]西安交通大学,西安710049

出　　处：《电子学报》1998年第6期14-18,共5页Acta Electronica Sinica

基　　金：国家教委博士点专项基金

摘　　要：利用统计动力学方法建立了描述旋转对称电子束的电子空间及动量分布演化的变态伏拉索夫方程,并在一阶旁轴近似下研究出一种半解析计算方法,用本方法计算了漂移空间电子束分布的演化和包络的扩张,计算实例表明,该半解析方法与全数值计算方法结果符合较好。A modified Vlasov equation which describes the evolution of the spatial and momentum distribution of axisymmetrical electron beams is developed based on the statistical dynamics theory. A semi-analytical solution of the equation is given in the paraxial approximation. The evolution and the beam envelope spreading for electron beams in drifting space are calculated using the above theory and methods; the calculation results agree very well with the numerical computation results.

关 键 词：统计分布 电子束 统计动力学 电子光学 

分 类 号：O463.1[机械工程—光学工程]