Optical Crystals from CASTECH, Inc.

Scintillation Crystals -- NaI(Tl)

Scintillation Crystals -- NaI(Tl) -- View Larger Image
Scintillation Crystals -- NaI(Tl)-Image

NaI (TI) is the most extensively used material of all the available scintillators. It is grown by host material sodium iodide doped with appropriate percentage of thallium. The main emission wavelength is 415nm, which well matched with the working wavelength of photomultiplier tubes (PMTs). It has very high luminescence efficiency and exhibits no significant self absorption of the scintillation light and has good resolution ability to X-ray and ?-ray.