CsI(Tl)
Thallium doped Caesium Iodide
|
Properties
|
| After Glow |
Approx 2.0% after 2ms |
| After Glow |
Approx 2.8% after 1ms |
| Cleavage Planes |
None |
| Decay Constant (µs) |
1.0 |
| Density (g.cm-3) |
4.51 |
| Dielectric Constant |
5.65 at 1MHz (298K) |
| Emission Spectral Range (nm) |
375 to 725 |
| Gamma and X-ray absorption coefficients (cm-1) |
0.48 at 660keV |
| Gamma and X-ray absorption coefficients (cm-1) |
10.00 at 100keV |
| Light Escape Cone to Air (°) |
34.1 |
| Light Escape Cone to Glass (°) |
57.2 |
| Light Escape from one face to Air (%) |
8.6% |
| Light Escape from one face to Glass (%) |
22.9% |
| Melting Point (°C) |
621 |
| Optical Transmission Range |
240nm to 70µ |
| Peak Scintillation Wavelength (nm) |
565 |
| Photons/MeV |
52,000 |
| Radiation Length (cm) |
1.86 |
| Refractive Index at peak emmission |
1.78 |
| Soluble in Alcohol |
Yes |
| Specific Heat (J.kg-1.K-1) |
0.048 |
| Stability |
Slightly Hygroscopic |
| Structure |
BCC |
| Temperature Coefficient of Light Output (%.°C-1) |
+0.32 |
| Thermal Conductivity (W.m-1.K-1) |
1.13 at 298K |
| Water Solubility (g/100ml H2O) |
44 at 273K |
| Youngs Modulus (GPa) |
5.3 |
| |
Properties of CsI(Tl)