Anisotropy in the Atomic Vibrations of Zinc Crystals. III. The (0002) and (101¯0) Reflections of MoKαX-Rays from Powdered Zinc

The ratio of the $F$ value for the (0002) reflection to the $F$ value for the ($10\overline{1}0$) reflection of Mo $K\alpha$ x-rays from powdered zinc was found to be 0.891. This compares very well with Brindley's value of 0.894. Our results suggest that the value of $F$ for the ($10\overline{1}1$) reflection of Cu $K\alpha$ rays is 20.1, which is somewhat higher than Brindley's value.