A Monte Carlo study of reflection electron energy loss spectroscopy spectrum of a carbon contaminated surface
A Monte Carlo study of reflection electron energy loss spectroscopy spectrum of a carbon contaminated surface
复制标题
碳污染表面反射电子能量损失谱的蒙特卡罗研究
DOI：
10.1063/1.4896526
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发表时间：
2014-09-28
影响因子：
3.2
通讯作者：
Ding, Z. J.
中科院分区：
文献类型：
--
作者：
Da, B.;Li, Z. Y.;Ding, Z. J.
It has been experimentally found that the carbon surface contamination influences strongly the spectrum signals in reflection electron energy loss spectroscopy (REELS) especially at low primary electron energy. However, there is still little theoretical work dealing with the carbon contamination effect in REELS. Such a work is required to predict REELS spectrum for layered structural sample, providing an understanding of the experimental phenomena observed. In this study, we present a numerical calculation result on the spatially varying differential inelastic mean free path for a sample made of a carbon contamination layer of varied thickness on a SrTiO3 substrate. A Monte Carlo simulation model for electron interaction with a layered structural sample is built by combining this inelastic scattering cross-section with the Mott's cross-section for electron elastic scattering. The simulation results have clearly shown that the contribution of the electron energy loss from carbon surface contamination incre...
