TOF电子能谱仪抛物面电子反射镜参数计算  

Calculation of parameters for parabolic reflecting mirror in TOF electron-energy spectrometer

作　　者：陈德应[1] 夏元钦[1] 吴小燕[1] 姚琴[1] 陈建新[1] 王骐[1] 

机构地区：[1]哈尔滨工业大学光电子技术研究所,黑龙江哈尔滨150001

出　　处：《哈尔滨工业大学学报》2003年第2期199-202,共4页Journal of Harbin Institute of Technology

基　　金：国家高技术研究发展计划资助项目 (863 -80 4;2 0 0 1-13 ) ;863青年基金 (2 0 0 1-13 ) ;国家自然科学基金资助项目 (60 0 780 10 )

摘　　要：针对TOF电子能谱仪抛物面电子反射镜的参数问题 ,依据电磁理论和Reflect -Grid模型 ,通过合理的近似和简化 ,对抛物面电子反射镜的电场分布和电子收集效率进行了理论计算 ,对电子在其中的飞行轨迹进行了模拟 .结果表明 ,抛物网有无偏置电压对电子的收集效率有很大影响 ,当偏置电压为 70 0V时 ,电子收集效率比无偏置电压时高 6 0～ 80倍 ,理论计算为 10 0倍 ,二者基本相符 。The electric field distribution in a parabolic reflecting mirror was calculated with reasonable approximation and simplification using the electromagnetic theory and Reflect-Grid model, and by numerical simulation of the electron-moving track in the solved field distribution, the electron collection efficiency of the parabolic mirror is calculated. The results demonstrate that the voltage added on the parabolic net has great influence on the electron collection efficiency. It was found the electron collection efficiency was enhanced 60～80 times when 700 V voltage was added to the parabolic net, while it was 100 times in our calculation. The theoretical result is in good agreement with the experimental result.

关 键 词：TOF电子能谱仪 抛物面电子反射镜 参数计算 电子收集效率 电场分布 

分 类 号：TH842[机械工程—仪器科学与技术] TL817[机械工程—精密仪器及机械]