Patent ID: 7801272
Filing Date: 2010-09-21
Classification: G01N

Abstract:
1. An X-ray diffraction apparatus comprising: a device for generating an X-ray parallel beam to be made incident on a sample; a mirror for reflecting diffracted X-rays from the sample, wherein the mirror utilizes a diffraction phenomena and has a reflective surface which is formed so that: (i) an angle that is defined in a plane parallel to a diffraction plane becomes constant, wherein the angle is between a tangential line of the reflective surface at any point on the reflective surface and a line segment connecting said any point on the reflective surface and the sample, and (ii) a crystal lattice plane that causes reflection is parallel to the reflective surface at any point on the reflective surface; and an X-ray detector for detecting the reflected X-rays from the mirror, wherein the X-ray detector is one-dimensional position sensitive in a plane parallel to the diffraction plane; wherein a relative positional relationship between the mirror and the X-ray detector is determined, in the plane parallel to the diffraction plane, so that the reflected X-rays from different points on the reflective surface of the mirror reach different points on the X-ray detector respectively.