METHOD OF MANUFACTURING SCINTILLATOR FOR DETECTORS OF IONIZING RADIATION, DEVICE FOR IMPLEMENTATION THEREOF AND SCINTILLATOR FOR DETECTORS OF IONIZING RADIATION Russian patent published in 2020 - IPC C30B25/00 C30B25/02 C30B25/08 C30B25/10 C30B15/14 C30B25/18 C30B29/16 C23C16/02 C23C16/40 C23C16/455 C23C16/46 C09K11/54 G01T1/202 B82B3/00 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: invention relates to crystallography and ionizing radiation detection equipment. Disclosed is a method of producing a scintillator for detecting ionizing radiation in a furnace reactor by depositing ZnO on a substrate in a growth zone from a gas phase consisting of zinc vapour and a gas mixture of argon and oxygen, when blowing the gas phase through the Zn evaporation zone located in the crucible, into the growth zone of ZnO on the substrate, wherein the reactor is previously evacuated to pressure of 8–10 Pa, then pure argon is blown through reactor, while vacuuming of reactor, when reactor pressure reaches no more than 12 Pa, heating zones and evaporation are heated, increasing temperature in evaporation zone to 640÷680 °C, and in growth zone to 550÷580 °C, after steady-state values of temperature in growth zone and evaporation are maintained, while not supplying argon, pure oxygen is fed into reactor, wherein ratio of volumes of argon and oxygen is 9/1, consumption of said mixture 350÷450 cm³/min during its flow in direction from zinc evaporation zone to growth zone of arrays of ZnO nanocrystals. Device for implementation of method comprises furnace 1 with heating element, inside which there is reactor 4, containing container 7 with metal zinc and substrate for grown crystals, which are arranged, respectively, in the evaporation zone and the growth zone, wherein in reactor 4 ampoule 5 is installed, in the side surface of which there is slot 6, inside ampoule 5 there is container 7 with zinc metal powder, a container for the scintillator is installed behind container 7 in the direction of the gas mixture, heater is made two-sectional, first section 2 of heater in evaporation zone provides heating of gas mixture to temperature of 640÷680 °C, and second section 3 of heater provides for maintenance in growth zone of temperature of 550÷580 °C. Scintillator obtained by said method comprises a substrate and a layer of ZnO nanocrystals, wherein substrate is made in form of sapphire plate with double-sided super-smoothing, oriented in plane (0001), and layer of ZnO nanocrystals has area of not less than 10×10 mm² and thickness of not less than 15 mcm.

EFFECT: due to maintenance of preset temperature modes in evaporation and growth zones invention enables to obtain on substrate uniform layer of nanostructure ZnO with standard aperture of not less than 10×10 mm² for detectors of ionizing radiations with high time resolution.

3 cl, 3 ex, 4 dwg