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不同入射角度铝的较高能二次电子发射系数表达式 被引量:3

FORMULA FOR SECONDARY ELECTRON YIELD FROM METAL Al AT HIGHER INCIDENT ELECTRON ENERGY AT DIFFERENT INCIDENT ANGLE
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摘要 根据分析二次电子的入射过程及二次电子发射系数的定义,从理论上推导出铝的较高能二次电子发射系数与原电子入射能量及入射角度的关系。通过计算,得出了发射系数的具体表达式。用该表达式计算得到原电子以不同角度轰击下铝的较高能二次电子发射系数理论值。根据该表达式得到的理论数据与已有实验数据比较符合。 The relation between the incident energy incident angle and secondary electron emission coefficient at higher incident electron energy in theory on the basis of dominant physical processes of secondary electron emission is discassed. By calculating the parameter, we get the formula for secondary electron yield from metal A1 at higher incident electron energy and different incident angle. After comparison with experimental data, the formula is well applicable.
出处 《真空与低温》 2014年第1期43-45,61,共4页 Vacuum and Cryogenics
基金 南京信息工程大学2013年科技创新项目基金支持 项目编号:201310300091
关键词 较高能 二次电子 入射能量 电子发射系数 higher energy secondary electron incident energy secondary electron emission coefficient
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