New Development of Powder Diffraction

本研究项目每年召开两次研究会议。总共进行了34次讲座。作为分析粉末衍射数据的新方法，给出了一些高温超导体的Rietveld法的结果。此外，将粉末模式分解、最大熵法应用于一些简单材料。介绍了各种实验技术，如实验室x射线源的x射线衍射、同步辐射、反应堆或脉冲源的中子粉末衍射。许多实验结果表明，现代粉末衍射是研究材料结构的有力工具。

This research project was performed by two research meeting held in each year. Over all, 34 lectures were given. As new methods to analyze powder diffraction data, the results of Rietveld method of some high Tc super conductors were given. Furthermore, the Powder Pattern Decomposition, Maximum Entropy Method were applied to some simple materials. Various experimental techniques are also introduced, such as X-ray Diffraction by Laboratory X-ray source, Synchrotron radiation, Neutron powder diffraction by either a reactor or a pulse source. Through many experimental results it was shown that modern powder diffraction is a very powerful tool for a structural study of materials.