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本文分析了在均匀纵向磁場中的多阳极、变电压轴对称电子枪。其结果既造用于实心注电子枪,也造用于空心注球形电子枪。从旋转补偿的概念出发,导出了极间距离与补偿点各阳极电压的关系,以及补偿所需要的磁場。利用小扰动理论与大扰动理论研究了漂移区中考虑空间电荷效应与注入条件时电子束的波动,并对电子束在电子枪出口的注入条件及漂移区内的波动进行数值计算,以给出设计电子枪时所需要的参考曲线。
This paper analyzes the multi-anode and variable-voltage axisymmetric electron gun in a uniform longitudinal magnetic field. The result is not only for solid injection electron guns but also for hollow ball injection electron guns. Based on the concept of rotation compensation, the relationship between the interelectrode distance and each anode voltage at the compensation point and the magnetic field required for compensation are derived. The small perturbation theory and large perturbation theory are used to study the fluctuation of the electron beam in the drift region considering the space charge effect and the injection condition. The injection conditions of the electron beam at the exit of the electron gun and the fluctuation in the drift region are numerically calculated to give the design The required reference curve for the gun.