Thallium-doped sodium iodide NaI(TI) crystal is a scintillation crystal with excellent performance. Its maximum emission wavelength is 415 nm, which

can be well matched with the photocathode of a common specification photomultiplier tube. Sodium iodide crystals are widely used in various fields such as nuclear medicine, environmental monitoring, safety inspections and scientific research. Due to their excellent energy resolution and high light output, they are also commonly used in gamma cameras, positron emission tomography(PET) machines and other radiation detection systems.

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