Rigaku Corporation

Yukiko Ikeda

Akihiro Himeda

Keigo Nagao

Akito Sasaki

A method for displaying measurement results from X-ray diffraction measurement, in which a sample is irradiated with X-rays and the X-rays diffracted by the sample are detected by an X-ray detector, comprises: (1) forming a one-dimensional diffraction profile by displaying, on the basis of output data from an X-ray detector, a profile in which one orthogonal coordinate axis shows 2&#x3b8; angle values and another orthogonal coordinate axis shows X-ray intensity values; (2) forming a two-dimensional diffraction pattern by linearly displaying X-ray intensity data, for each 2&#x3b8; angle value and on the basis of output data from the X-ray detector; the X-ray intensity data being present in the circumferential direction of a plurality of Debye rings formed at each 2&#x3b8; angle by diffracted X-rays; and (3) displaying the two-dimensional diffraction pattern and the one-dimensional diffraction profile so as to be aligned such that the 2&#x3b8; angle values of both coincide with each other.

Method for displaying measurement results from x-ray diffraction measurement

A crystalline phase contained in a sample is identified, from X-ray diffraction data of the sample which contain data of a plurality of ring-shaped diffraction patterns, using a database in which are registered data related to peak positions and peak intensity ratios of X-ray diffraction patterns for a plurality of crystalline phases. Peak positions and peak intensities for a plurality of the diffraction patterns are detected from the X-ray diffraction data (step), and the circumferential angle versus intensity data of the diffraction patterns is created (step). The diffraction patterns are grouped into a plurality of clusters on the basis of the circumferential angle versus intensity data (step). Crystalline phase candidates contained in the sample are searched from the database on the basis of sets of ratios of peak positions and peak intensities of the diffraction patterns grouped into the same cluster (step).

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Akishima, Japan

Yukiko Ikeda