静电曲轴宽电子束二级几何像差及系数的计算  

Computation on Geometrical Aberrations and Their Coefficient with Second Order of Electrostatic Wide Electron Beam Having Curvilinear Axes

作　　者：张良忠[1] 金伟其[2] 周立伟[2] 

机构地区：[1]北方交通大学光波技术研究所,北京100044 [2]北京理工大学光电工程系,北京100081

出　　处：《电子学报》2000年第2期17-19,共3页Acta Electronica Sinica

基　　金：国家自然科学基金

摘　　要：由二级近似下的曲轴轨迹方程出发 ,探讨了静电曲轴宽电子束二级几何像差及其系数 ,并给出了适于计算的形式 .在大量管型计算的基础上 ,文中给出了两个实际管型的几何像差及系数的计算结果 ,并由此得出一级与二级几何像差的差异趋势 。Based on curvilinear trajectory equations,the geometrical aberrations and their coefficients with second order approximation have been discussed,and the computational form also given in the paper.On the computational base of large numbers of tube type,the paper has offered the computational results of geometrical aberrations and their coefficients by two practical tubes,and given the trend of difference between geometrical aberrations with first order and ones with second order,which have certain meanings to the design and computation of practical imaging tubes.

关 键 词：静电 电子束 几何像差 电子光学 

分 类 号：TN101[电子电信—物理电子学] TN201