静电宽束曲轴二级近似轨迹的分析与计算

检验曲轴轨迹计算方法的合理性与可靠性。方法利用同心球系统，结果曲线坐标系下宽电子束曲轴的主轨迹方程以及考虑到二级近似下的曲轴轨迹方程进行具体的计算。结论由此验证曲轴轨迹计算方法是合理可靠的。

Analysis and Computation on Curvilinear Trajectory of Electrostatic Wide Beam with Second Order Approximation

Aim\ To demonstrate the rationality and credibility of methods of computing curvilinear trajectories Methods The main equations of curvilinear trajectory and equations of curvilinear trajectory which consider second order approximation were computed by concentric spherical system Results The computational results show that there is a deviation about at the 5 th of decimal place between first and second order approximations of curvilinear trajectories, and aberrations computed for practica limaging tubes are about at the 4 th of decimal place Conclusion\ The computational methods of curvilinear trajectories have been proved