X-RAY-DIFFRACTION TOMOGRAPHY AT THE AUSTRALIAN NATIONAL BEAMLINE FACILITY

Preliminary x-ray diffraction tomographic experiments utilizing synchrotron radiation have been performed at the Australian National Beamline Facility (BL20B) of the Photon Factory, National Laboratory for High Energy Physics in Japan. The tomographic instrument arrangement consisted of a double silicon crystal monochromator, motor-driven beam-defining collimation slits, and microcomputer-controlled specimen movement stages and was designed to simultaneously record tomographic data from multiple transmission and scatter radiation detectors. Image plates were used to record the scattering properties of specimen constituents, which facilitated registration of the scatter detectors. The design of the instrument is described and some preliminary results are presented.