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NaI Crystal
NaI Crystal

NaI Scintillation Crystal Sodium Iodide

Advantage:

  • High energy resolution

  • High light output

  • High photon yield


Application:

  • Gamma cameras

  • PET scanners,

  • Radiation detection 

Specification Parameter

PropertiesValueUnit
Density3.67g/cm³
Hardness2Mohs
Melting point924k
Wavelength of emission max.415nm
Light yield38,000Photon/Mev
Decay Constant264ns
Cleavage(100)
HygroscopicYes

NaI(Tl) (Sodium Iodide) crystals are known for their exceptionally high scintillation efficiency, making them one of the most commonly used materials for radiation detection. They generate some of the highest signal outputs in photomultiplier tubes (PMTs) based on the amount of radiation absorbed. The emission peak of NaI(Tl) closely aligns with the spectral response of PMTs that use bialkali photocathodes, allowing for highly efficient light detection.

 

These crystals are extensively applied in a wide range of radiation detection scenarios, including nuclear medicine, environmental monitoring, nuclear physics, aerial radiometric surveys, well logging, and more.

 

EBO provides custom fabrication of NaI(Tl) crystals in various sizes and geometries to suit specific application needs. However, since NaI(Tl) is hygroscopic—readily absorbing moisture from the air—it requires careful handling and appropriate storage conditions to prevent performance degradation and to ensure long-term reliability.


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