Cesium Iodide doped with Sodium (CsI:Na) is a high-performance inorganic scintillation crystal widely used in radiation detection. Boasting a density of 4.51 g/cm³ and a light yield reaching 85% of NaI:Tl, it features a broad emission band peaking at 420 nm, perfectly matching the sensitivity of common photomultiplier tubes. With excellent thermal stability, mechanical strength and low hygroscopicity, it serves as a ...
Cesium Iodide doped with Sodium (CsI:Na) is a high-performance inorganic scintillation crystal widely used in radiation detection. Boasting a density of 4.51 g/cm³ and a light yield reaching 85% of NaI:Tl, it features a broad emission band peaking at 420 nm, perfectly matching the sensitivity of common photomultiplier tubes. With excellent thermal stability, mechanical strength and low hygroscopicity, it serves as a key component in medical imaging, high-energy physics experiments and space exploration equipment.
OST Photonics offers custom-supply of encapsulated CsI(Na) scintillators and integrated CsI(Na) scintillation detectors to meet specific client requirements.
Nuclear Radiation Detection
High Energy & Dark Matter Experiments
Nuclear Medical Imaging
Space Exploration
Industrial Non-destructive Testing
High light yield
Emission peak at 420 nm
Excellent thermal stability
High density (~4.51 g/cm³)
Maximum Size: ɸ80mm x 400mm
Available items: encapsulated scintillator, high temperature encapsulated scintillator, scintillation detector.
Density (g/cm3) | 4.51 |
Melting point (K) | 894 |
Thermal expansion coefficient (K-1) | 49 x 10-6 |
Cleavage plane | none |
Hardness (Mhos) | 2 |
Hygroscopic | yes |
Wavelength of emission maximum (nm) | 420 |
Lower wavelength cutoff (nm) | 300 |
Refractive index at emission maximum | 1.84 |
Primary decay time (µs) | 0.63 |
Afterglow (after 6ms) (%) | 0.5 – 5.0 |
Light yield (photons/MeV) | 41000 |
Photoelectron yield (% of NaI(Tl)) | 85 |
The following specifications are listed on our original catalogue. Custom dimensions, orientations and surface finishes are produced to your drawing.
Send us your dimensions, orientation, surface finish and quantity. Our engineers reply with a technical proposal and price.
