Thallium doped Sodium Iodide
NaI(Tl)
Crystals are available in a wide range of standard sizes and configurations either as separate crystals or in complete assemblies. Maximum light transfer is achieved by employing a high efficiency reflector chosen to suit the particular application for which the crystal is required. Materials used are selected to ensure low background count.
Cleavage Planes: (100)
Decay Constant (ns): 230
Density (g.cm-3): 3.7
Emission Spectral Range (nm): 325-525
Gamma and X-ray absorption coefficients (cm-1): 0.29 at 660keV
5.5 at 100KeV
5.5 at 100KeV
Melting Point (K): 924
Peak Scintillation Wavelength (nm): 410
Photons/MeV: 40000
Radiation Length (cm): 2.59
Refractive Index at Peak Emission: 1.8
Solubility (g/100g H2O @ 300K): 184.2
Stability: Very Hygroscopic
Structure: BCC
Thermal Conductivity (W·m-1·K-1) @ 300K: 3.47
Transmission Range (nm): 250-350