An X-ray diffraction contrast tomography (DCT) system, and an X-ray diffraction contrast tomography (DCT) method

摘要

An X-ray diffraction contrast tomography system (DCT) comprising a laboratory X-ray source (2), a staging device (5) rotating a polycrystal line material sample in the direct path of the X-ray beam, a first X-ray detector (6) detecting the direct X-ray beam being transmitted through the crystalline material sample, a second X-ray detector (7) positioned between the stag ing device and the first X-ray detector for detecting dif fracted X-ray beams, and a processing device (15) for analysing de tected values. The crystallographic gram orientation of the individual gram in the polycrystailine sample is determined based on the two dimensional position of extinction spots and the associated angular posi tion of the sample for a set of extinction spots pertaining to the individ ual gram.