多相体系的多晶电子衍射分析

Polycrystalline electron diffraction analysis of multiphase system

本文介绍为分析多相体系的多晶电子衍射图而设计编写的计算机程序。多相体系是指含有两种或两种以上多晶晶体相,其电子衍射图较为复杂。该程序可用于模拟合成的多相体系的多晶电子衍射,其强度分布可随其构成的单相峰高、峰宽与峰位的变化而变化,这三个量分别与该相的含量、晶粒尺度、所用相机常数相关。该程序有助于实验结果分析或作为相关教学工具。

In this paper a computer program was described, which is designed for analysis of polycrystalline electron diffraction pattern of a multi-phase system .A multi-phase system may contain two or more polycrystalline phases, the electron diffraction of such a system produces a complicated ring pattern. The program can be used to simulate the resultant ring pattern by adjusting the peak height, peak width, or peak position in each pattern, which is related to the quantity of the corresponding phase, its grain size, and the camera length. This program is helpful to interpret experimental result and can be also used as a teaching tool.