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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Elastic reflection of low-energy electrons from polycrystalline gold targets
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Elastic reflection of low-energy electrons from polycrystalline gold targets

机译：来自多晶金靶的低能电子的弹性反射

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Monte Carlo calculations to study the influence oi solid-state, polarization, exchange and relativistic effects on the angular distribution and the reflection coefficient for electrons elastically reflected from gold surfaces have been performed. Elastic differential cross sections were determined using relativistic Dirac equations with a solid atom potential including the polarization and exchange effects. inelastic differential inverse mean free paths were computed using the extended Drude dielectric function for volume and surface excitations. These showed that the polarization effect made a contribution to elastic differential cross sections at small scattering angles, whereas, the exchange and relativistic effects contributed to these cross sections at Barge scattering angles. These effects are important to the angular distribution and the elastic reflection coefficient. for electron energies below 400 eV, Monte Carlo results calculated in this work are in very good agreement with experimental data. [References: 51]
机译：进行了蒙特卡罗计算，以研究固态，极化，交换和相对论效应对从金表面弹性反射的电子的角度分布和反射系数的影响。弹性微分截面是使用相对论狄拉克（Dirac）方程确定的，其中固体原子势包括极化和交换效应。使用扩展的Drude介电函数针对体积和表面激励计算非弹性微分逆平均自由程。这些表明极化效应对小散射角处的弹性微分截面有贡献，而交换和相对论效应对巴格散射角处的这些横截面有贡献。这些影响对于角度分布和弹性反射系数很重要。对于低于400 eV的电子能量，此工作中计算出的蒙特卡洛结果与实验数据非常吻合。 [参考：51]

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