METHOD OF PRODUCING CRYSTALS OF THALLIUM HALIDE Russian patent published in 2017 - IPC C30B11/02 C30B29/12 G02B1/02 

FIELD: technological processes.

SUBSTANCE: invention relates to the production of materials, which are transparent in the infrared spectral region that can be used for manufacturing optical elements, that are transparent in the wavelength range from 0.4 to 25 microns; production of uncooled detectors c- and g-radiation for nuclear physics methods of diagnosis and monitoring, as well as the manufacture of optical fibers IR. A process for producing crystals of thallium halide for the infrared optics involves the synthesis of thallium halide reacting molten metal thallium, taken in excess, with the pairs of halogen in a vacuum, at a temperature at 10-30°C below the melting temperature of the resulting halide of thallium, which is carried out in a horizontally mounted container, made in two containers connected by a constriction of the hollow axis and rotating around its longitudinal axis at a speed of 120-150 rev/min, the separation of the excess metal from the ingot synthesized thallium halide, thallium halide purification obtained by vacuum distillation and melt crystallization directly followed by growing crystal.

EFFECT: simplification of the process of crystal growth, and improvement of their optical quality.

2 dwg, 2 ex