Patent ID: 8503611

Claim:
An x-ray topography apparatus comprising: an x-ray source for generating x-rays; a first slit for forming the x-rays from the x-ray source into a linear shape and causing the x-rays to be incident on a sample; a scanning stage for moving the sample relative to the x-ray source; an x-ray detector for receiving the x-rays from the sample; and a second slit provided between the sample and the x-ray detector, wherein: a planar diffraction image is obtained by moving the sample by the scanning stage, keeping the second slit fixed in place relative to the x-ray source, and moving the x-ray detector in synchronization with the sample, while performing measurements of applying x-rays to the sample and receiving the x-rays from the sample by the x-ray detector; the x-ray detector is a planar x-ray detector of cylindrical shape having a surface area greater than the surface area of the sample; detector rotation means is provided for rotating the planar x-ray detector about a center axis of the cylindrical shape in coordination with a scanning movement of the linear x-rays; the center axis of the cylindrical shape extends in a direction at a right angle to the direction of the scanning movement of the linear x-ray; and the second slit is provided at an incline relative to the sample so that x-rays from the sample enter the x-ray detector from a normal line direction relative to the x-ray detector.