金属的高能二次电子发射系数与入射能量和能量幂次的关系
Relation among energy exponent, incident energy and secondary electron emission coefficient of metal at high incident electron energy
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摘要: 根据原电子射程表达式和金属的有效真二次电子发射系数表达式，推导出金属的高能有效真二次电子发射系数与入射能量、能量幂次的关系式；并根据金属的高能有效真二次电子发射系数与金属的高能二次电子发射系数的关系，推导出金属的高能二次电子发射系数与入射能量、能量幂次的关系式。用实验数据计算出高能原电子轰击在金或银上时原电子入射能量幂次n，采用实验数据证实高能二次电子发射系数与原电子入射能量和能量幂次三者的关系，对结果进行讨论并得出结论：当高能原电子轰击在同一块金属上时，高能二次电子发射系数与原电子入射能量的n-1次幂之积近似为一常数。Abstract: Based on the formula of range and that of real efficient secondary electron yield from metal, the relation among energy exponent, incident energy and the real efficient secondary electron yield at high incident electron energy was derived. Based on the relation between the real efficient secondary electron yield and secondary electron yield at high incident electron energy of metal, the relation among the energy exponent, incident energy and the secondary electron yield at high incident electron energy was derived. The energy exponents (n) of the primary electrons hitting on gold and silver is computed with experimental results. The experimental results also validate the relation among the incident energy,energy exponent and the secondary electron yield at high incident electron energy for
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Key words:
- high energy electron /
- secondary electron emission coefficient /
- energy exponent /
- gold /
- silver
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