Abstract

Possibilities of increasing the electron beam energy concentration in the electron-optical system of a welding gun characterized by a traditional scheme in which a focusing lens and a deflecting system are installed sequentially along the beam and a new scheme based on a focusing–deflecting system with combined fields are considered. A technique based on solving the paraxial equations of trajectories and calculating aberration integrals is described, which allows one to determine the total diameter of the electron beam. Based on the described methodology, a model of a new focusing–deflecting system with combined fields has been developed. It is shown that the new scheme of the electron-optical system allows one to increase the energy concentration in the region of the interaction of the beam with the material in comparison with the traditional one.

中文翻译：

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增加焊枪电子光学系统中束能量集中度的方法

摘要

以传统方案为特征的焊枪电子光学系统中增加电子束能量集中的可能性，在传统方案中，沿光束顺序安装聚焦透镜和偏转系统，以及基于聚焦偏转系统的新方案。考虑组合字段。描述了一种基于求解轨迹的近轴方程并计算像差积分的技术，该技术可以确定电子束的总直径。基于所描述的方法，已经开发了具有组合场的新型聚焦偏转系统的模型。结果表明，与传统方法相比，新的电子-光学系统方案可以使光束与材料相互作用的区域内的能量集中度增加。