Sodium iodide thallium-doped NaI(Tl) scintillators
Sodium iodide activated with thallium, NaI(Tl), if subjected to ionizing radiation, emits photons (i.e., scintillate) and is used in blaze detectors, commonly in nuclear medicine, geophysics, nuclear physics, and ecology measurements. NaI(Tl) is the a lot of broadly used blaze material.
The crystals are usually accompanying with a photomultiplier tube, in a hermetically closed assembly, as sodium iodide is hygroscopic. Fine-tuning of some ambit (i.e., radiation hardness, afterglow, transparency) can be accomplished by capricious the altitude of the clear growth. Crystals with a college akin of doping are used in X-ray detectors with top spectrometric quality. Sodium iodide can be used both as individual crystals and as polycrystals for this purpose. The amicableness of best discharge is 415 nm.