【摘要】 本文叙述均匀磁聚焦和周期磁聚焦部分屏蔽流过渡区设计的一种方法,指出对于阳极电位与慢波线电位不同的电子光学系统,以及这两个电位虽然相同,但导流系数大,阳极孔效应严重的电子光学系统,它们的过渡区的设计,必须采用非等位空间中的傍轴电子轨迹方程。并对用部分屏蔽流周期磁聚焦的电子光学系统,电子枪区中的电子轨迹与磁力线重合的问题提出一些看法。更多还原

【Abstract】 This paper describes a method about the design of the transition region of the electron beam from partially shielded cathode with uniform and periodic magnetic focusing field. It is necessary to use paraxial ray equation in non-equipotential space for the electron optics system in which anode potential is not the same as helix potential or for the electron optics system in which anode potential is the same as helix potential, but the perveance is high, thus the anode hole influence is strong. Some idea about the problem of coincidence of electron trajectory in electron gun with magnetic flux line for the electron optics system using partially shielded cathode with periodic magnetic focusing field is presented.更多还原