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Published online by Cambridge University Press: 06 March 2019
Experiments on the application of X-ray image intensifiers of the Fluorex type and of transmission-type secondary electron image intensifies (Astracon tubes) to the direct observation and recording of X-ray diffraction patterns have proved highly successful. Further improvements can be obtained by combining a Fluorex tube directly with an Astracon tube. By this means, the useful signal strength is so improved that movies at standard frame speed can be made which record the changing Laue pattern from a rotating crystal. It is shown how still further improvements are possible if the optical coupling in the system is improved by incorporating a fiber-optics window at the input of the Fluorex-Astracon tube. It is further indicated how a fiber-optics adapter can be used as an analog computer to convert the X-ray diffraction pattern from a single crystal into an exact representation of the reciprocal lattice which can be viewed directly.