The Use of Intensifying Screens in X-Ray Diffraction Work

In an attempt to reduce exposure times for monochromatic x-ray diffraction patterns of liquids, a Fluorazure intensifying screen has been used, and several tests of the applicability of this method to intensity measurements have been made. The intensifying factor for Mo Kα radiation varied from 1 for very low intensities or very short exposures, to 13.3 for intermediate intensities, and for Cu Kα radiation, it varied from 1 to 4. It appears impractical to use this screen when true intensity measurements are necessary. However, by using two ordinary x-ray films in contact, the exposure time, with Mo radiation, may be reduced to nearly one-half, and true intensity measurements may be made. With a new type of double emulsion film, true intensities are recorded and exposure times are reduced by a factor of 2.5 for Mo radiation.