Patent ID: 8385503
Filing Date: 2013-02-26
Classification: G01N

Abstract:
1. An X-ray diffraction contrast tomography system comprising an X-ray source for providing an X-ray beam in a direct path, a staging device for positioning and rotating a polycrystalline material sample in the direct path of the X-ray beam, a first X-ray detector located in the direct path with the staging device positioned between the first X-ray detector and the X-ray source, allowing said first X-ray detector to detect a direct X-ray beam being transmitted through the crystalline material sample, a processing device for analysing detected images and determining crystallographic grain positions and grain orientations in the polycrystalline material sample, wherein a second X-ray detector is positioned between the staging device and the first X-ray detector for detecting diffracted X-ray beams leaving the crystalline material sample at an angle, said second X-ray detector being adapted to allow at least a fraction of the direct X-ray beam leaving the polycrystalline material sample to continue to the first X-ray detector, and the X-ray source is a laboratory X-ray source.