CsI(Tl) Cesium Iodine doping thallium is the most typical alkali halide scintillation crystal which wavelength is 550nm, It's best matchable for PD, SiPM etc. CsI(Tl) has high density, High Z, No cleavage plane, excellent detection effiency, it's widely used in high energy physics, Nuclear detector, Space detection, security inspection,SPECT and container checking etc.
Specification:
| Density [g/cm3] | 4.51 |
| Melting point [K] | 894 |
| Thermal expansion coefficient [K-1] | 54 x 10-6 |
| Cleavage plane | none |
| Mohs hardness (Mho) | 2 |
| Hygroscopic | Slightly |
| Wavelength [nm] | 550 |
| Lowest cut off wavelength [nm] | 320 |
| Refractive index | 1.79 |
| Decay time [µs] | 1 |
| Afterglow (after 6ms) [%] | 0.5 - 5.0 |
| Light yeild [photons/MeVγ] | 52- 56 x103 |
| Photoelectron yeild ratio [% of NaI(Tl)] (y rays) | 45 |
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