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Barium Fluoride BaF2 crystals have good optical transmission properties, and can be used as ultraviolet and infrared optical windows in the spectral range of 0.15μm-14.5μm. At the same time, it has excellent scintillation properties, and its role in the analysis of cadmium, antimony, and zinc is more obvious than that of indium, bismuth, and lead, and it has become an important crystal material in the fields of high energy physics, nuclear physics, and nuclear medicine.

In high-energy physics experiments, the detection of photons plays a very important role. The detection of photons is mainly achieved by measuring the electromagnetic showers it produces in matter. With the continuous improvement of the energy of high-energy accelerators, the photons studied The energy is also getting higher and higher, which requires that the materials used in the detector not only have high blocking ability, but also have better time resolution, energy resolution and radiation resistance.