Sodium iodide (NaI) crystal material

Adding thallium to the crystallization of sodium iodide, NaI(Tl)， When exposed to ionizing radiation, photons (scintillation) are emitted, which is why they are used in scintillation detectors, traditional nuclear medicine, geophysics, nuclear physics, and environmental measurements. NaI (Tl) is the most widely used scintillation material and has the highest light output. Sodium iodide crystals are usually accompanied by photomultiplier tubes and sealed in a sealed device due to their deliquescence. Fine tuning some parameters (such as radiation hardness, afterglow, transparency) can achieve crystal growth under different conditions. When the ratio of additives in the crystal is high, it can be used for high spectral quality X-ray detectors. In this application, sodium iodide can be used as both a single crystal and a polycrystalline.