HIGH ENERGY HIGH RESOLUTION MONOCHROMATIC X-RAY COMPUTED TOMOGRAPHY USING SYNCHROTRON RADIATION

Abstract We have developed a high resolution monochromatic X-ray computed tomography system using synchrotron radiation in the energy range up to 50 keV. The system was installed in a vertical wiggler beam/ine at the Photon Factory of the National Laboratory for High Energy Physics. The system consists of a double-crystal monochromator employing asymmetric Bragg reflections, a photodiode array detector with a phosphor screen, and a microcomputer for control. cr images with a pixel size of 7.7, urn were obtained. An image subtraction technique for cr images above and below the X-ray absorption edge of iodine was also evaluated for liquid-containing glass capillaries. The results indicate that the system is very useful for nondestructively evaluating fine structures and their constituent elements.