Sodium iodide (chemical formula NaI) is an ionic compound formed from the chemical reaction of sodium metal and iodine. Under standard conditions, it is a white, water-soluble solid comprising a 1:1 mix of sodium cations (Na + ) and iodide anions (I − ) in a crystal lattice .

The longtime work horse for BNC’s SAM III generation and SAM 940, sodium iodide (NaI) crystals are the most widely used scintillation material for gamma-ray spectroscopy. Their high light output and the excellent match to the sensitivity of photomultiplier tubes, provide good, economical energy resolution.

Sodium Iodide crystals have a very high luminescence (scintillation) efficiency and are available in a wide variety of sizes and geometries that makes it the most widely used scintillator. Thallium-doped Sodium Iodide produces one of the highest signals in a …

Thallium doped sodium iodide-NaI(Tl), is a classic scintillator for detecting gamma-radiation of intermediate and low energies. It has the greatest light output among all the scintillators and a convenient emission range coinciding with a maximum …

NaI(Tl) (thallium-doped sodium iodide) is the most widely used scintillation material. NaI(Tl) as the scintillator is used in scintillation detectors, traditionally in nuclear medicine, geophysics, nuclear physics, and environmental measurements. The iodine provides most of the stopping power in sodium iodide (since it has a high Z = 53).

2015年9月10日 · When a gamma ray interacts with the NaI crystal it deposits energy – this energy is what causes the photons to be given off. Not only that, but a predictable number of photons are emitted depending on the energy deposited – in a sodium iodide crystal, depositing 1 MeV of energy will cause about 42,000 scintillation photons to be emitted.

Sodium iodide is a water-soluble ionic compound with a crystal lattice. Sodium iodide is a source of iodine and can be administered as a supplement for total parenteral nutrition but is more commonly used in veterinary medicine.

NaI (Tl) achieves a high light output compared to other scintillator materials and has an emission range compatible with the maximum efficiency of bialkali photocathodes in PMTs. Sodium Iodide growth methods allow for large crystal sizes to be offered economically, with dopant concentration, material quality and dimensions controllable on request.

Scintillation Efficiency: NaI crystals exhibit high scintillation efficiency, converting incident radiation into detectable light signals with exceptional precision. Gamma-Ray Detection: They are particularly sensitive to gamma radiation, making them a preferred choice for gamma spectroscopy and radiation monitoring.