Taranyuk V. Halide crystals growth by skull method

The thesis is devoted to the development of halide crystal growth technology by skull method. Two types of equipment were created - laboratory and pilot skull growth furnace, which allow to grow crystals ranging in size from 30x10 mm 250x180x90 mm without using platinum. With the help of numerical simulation and experimental studies, the heat and mass transfer features for all stages of NaI crystal growth process by skull method were determined. It was obtained the temperature gradients and the main control parameters of the process. It was proposed a method for controlling the crystallization rate by the movable electrocontact melt level gauge. This allows to determine the features of crystallization rate. On the example of NaI(Tl), LiF and PbF2 crystals growth by skull method it was shown that the crystals have a block structure and their functional properties lie at the same level as crystals growth by the classical methods.