晶体中电子散射的动力学效应与用于观察表面结构的正面成像法

Dynamic Effect of Electron Scattering in Crystals and Its Application in Surface Structure Observation with The Plan View Imaging Mode in HRTEM

本文通过对用于观察表面结构的高分辨电子显微正面成像法进展的回顾，从晶体中电子散射的动力学厚度效应出发，讨论了表面波与体波振幅的可比性在表面结构成像中的作用：揭示了表面结构像的厚度周期性；并对正面成像中的顶－底效应提出了一种新的解释。

By reviewing the progress in surface structure observation with plan view imaging mode in HRTEM, some problems which were not well discussed previously were dealt in this paper in terms of the dynamic effects of electron scattering in crystals. These problems include both the periodicity in thickness of the electron microscopic images of surface structures and the role of comparability of the amplitudes of surface waves with those of the bulk ones in HRTEM plan view imaging. A new interpretation for top bottom effect in plan view imaging mode is also presented.