阴极形变引起的电子束漂移的实验和计算  

Experiments and Computations on Electron Beam Drift Caused by the Deformation of the Cathode Filament

作　　者：程康[1] 黄兰友[1] 

机构地区：[1]中国科学院电子光学技术研究所

出　　处：《电子显微学报》1989年第3期59-66,共8页Journal of Chinese Electron Microscopy Society

摘　　要：用电子光学系统测量和数值计算两种方法,初步探讨了发叉式钨丝热阴极因热形变引起的电子枪交叉斑的横向漂移,以及电子束方向角的变化,得出了一定条件下的定量关系。In an electron gun using a tungsten hairpin filament, the deformation of the heated filament may cause a drift in the position of the cross-over as well as a drift in the angular direction of the electron beam. These drifts have been studied using an experimental electron optical column and through numerical computation.

关 键 词：电子束漂移 阴极形变 数植计算 

分 类 号：TN14[电子电信—物理电子学]