近年来,强流带电粒子束在国民经济许多部门获得了广泛的应用。为了设计强流粒子加速器及其它强流带电粒子束装置,必须进行强流带电粒子光学的计算。从物理学的角度看来,强流带电粒子束运动的问题在电动力学中己经解决,通过解粒子运动方程和电位的Poisson方程即可求出带电粒子束中各粒子的运动状况。但是这一方法过分繁杂,而且我们关心的并不 In recent years, the strong current charged particle beam in many sectors of the national economy has been widely used. In order to design a high current particle accelerator and other high current charged particle beam devices, the calculation of high current charged particle optics must be performed. From a physical point of view, the problem of the motion of a heavily charged charged particle beam has been solved in electrodynamics. The motion of each particle in a charged particle beam can be found by solving the Poisson’s equation of motion and potential. But this approach is overly complicated and we are not concerned