Thallium doped Caesium Iodide


CsI(Tl) is a useful scintillator offering high light yield and emits at a wavelength suitable for silicon photomultipliers (SiPMs). Typical applications include arrays of this material used in security imaging systems, such as baggage scanners.


Cleavage Planes: None
Decay Constant (ns): 1000
Density ( 4.51
Emission Spectral Range (nm): 350-725
Gamma and X-ray absorption coefficients (cm-1): 0.48 at 660keV
10.00 at 100KeV
Melting Point (K): 894
Peak Scintillation Wavelength (nm): 550
Photons/MeV: 52000
Radiation Length (cm): 1.86
Refractive Index at Peak Emission: 1.78
Solubility (g/100g H2O @ 300K): 44.0
Stability: Slightly Hygroscopic
Structure: BCC
Thermal Conductivity (W·m-1·K-1) @ 300K: 1.13
Transmission Range (nm): 240-70000