The so-called scintillation crystal is that when high-energy particle rays are irradiated on the crystal, it can emit a certain wavelength of scintillation fluorescence in the crystal. Through the photoelectric conversion system and electronic equipment, the energy of the particles can be finally determined. The SHGS Research Institute has successively developed bismuth germanate (BGO), cerium fluoride (CeF3), barium fluoride (BaF2), thallium doped cesium iodide (CsI), lead tungstate (PWO) and other scintillation crystals through knowledge innovation . The above new types of scintillation crystals have won many world firsts after many international tests. For example, bismuth germanate crystals have the world's first quality and size, lead tungstate crystals have the highest luminescence and comprehensive performance, barium fluoride crystals have the highest quality and large size in the world, and cerium fluoride crystals have the highest light output and uniformity in the world. First, the radiation resistance of thallium-doped cesium iodide crystal is the first in the world.
The above five new scintillation crystals are widely used in the fields of high energy physics, nuclear physics, astrophysics, radiomedicine, geological petroleum exploration, etc. due to their excellent scintillation properties. The scintillation crystals produced by SHGS are widely used in high-energy physics positron collider, hadron collider, B-Factory and other large electromagnetic calorimeter detection materials and nuclear medicine positron layer fold scanner.