Koch Christoph T
Max Planck Institut für Metallforschung, Heisenbergstrasse 3, 70569 Stuttgart, Germany.
Acta Crystallogr A. 2005 Mar;61(Pt 2):231-6. doi: 10.1107/S0108767305002709. Epub 2005 Feb 22.
Despite the fast increase in expertise developed in the field of electron crystallography, dynamic scattering effects still remain a severe obstacle in this field, a hurdle that is being circumvented rather than fully tackled. In this paper, a new way of straightforward interpretation of conventional many-beam zone-axis dynamical electron diffraction patterns is presented that helps to solve the phase problem for non-centrosymmetric two-dimensional crystal structures, in particular if these contain only a few heavier atoms. While the implementation of this method is easiest for fairly weak multiple scattering, its extension to arbitrarily strong dynamical effects is mentioned. A method to obtain high-resolution diffraction data in the presence of specimen bending is proposed.
尽管电子晶体学领域的专业技术发展迅速，但动态散射效应仍然是该领域的一个严重障碍，这一障碍目前只是被规避而非完全克服。本文提出了一种直接解释传统多束带轴动态电子衍射图样的新方法，该方法有助于解决非中心对称二维晶体结构的相位问题，特别是当这些结构仅包含少数重原子时。虽然该方法对于相当弱的多重散射实施起来最为容易，但也提到了将其扩展到任意强动态效应的情况。还提出了一种在样品弯曲情况下获取高分辨率衍射数据的方法。
