X-ray diffraction method for determination of interplanar spacing and temperature distribution in crystals under an external temperature gradient

An X-ray diffraction method is developed for the determination of the distribution of temperature and interplanar spacing in a single-crystal plate. In particular, the temperature and the interplanar spacing differences in two different parts of a quartz single crystal of X-cut are experimentally determined depending on the value of the temperature gradient applied perpendicularly to the reflecting atomic planes ( ). The temperature distribution along the direction perpendicular to the reflecting atomic planes ( ) and the interplanar spacing distribution of atomic planes ( ) are determined as well.