Energy-dispersive Laue diffraction by means of a frame-store pnCCD

A frame-store pn-junction CCD detector was applied to the energy-dispersive X-ray Laue diffraction study of a-LiAlO2 crystal with white synchrotron radiation. Exploiting the simultaneous spatial and energy resolution of the detector the crystallographic unit cell of-LiAlO2 could be determined without any a priori information about the sample. The potential for application in X-ray structure analysis is tested by comparing experimental structure factors taken under a single exposure with those calculated from the known crystal structure. After correcting the measured spot intensities by angular and energy-dependent parameters, the agreement between experimental and theoretical kinematical structure factors is better than 10%.