Scintillation Crystals and Detectors: ZnSe(Te)
Scintillation Crystals and Detectors: ZnSe(Te)
Description
.jpg "Scintillation Crystals and Detectors: ZnSe(Te)")
ZnSe(Te) is a scintillation crystal and detector material that consists of zinc selenide (ZnSe) doped with tellurium (Te). It has high light yield, fast decay time, and good energy resolution, making it a useful material for various applications in radiation detection and imaging.
ZnSe(Te) detectors are commonly used in medical imaging, nuclear medicine, and environmental monitoring. They can detect a wide range of gamma-ray energies and have excellent performance at room temperature. However, they are relatively expensive compared to other scintillation detectors and have lower light output compared to some other materials such as NaI(Tl) or CsI(Tl).
| Properties/crystal | ZnSe(Te) |
| Crystal structure | - |
| Lattice constant( Å ) | - |
| Melting point, °C | 1773 - 1793 |
| Density, g/cm3 | 5.42 |
| Mohn hardness | - |
| Thermal expansion, 10-6/K | - |
| Refractive index | 2.58 - 2.61 at 610 nm |
| Emission wavelength (nm ) | 610(fast), 640(slow) |
| Decay constant (ns ) | 1-3(fast), 30-70(slow) |
| Radiation length (cm ) | - |
| Hygroscopic | No |
| Afterglow % at 6ms | < 0.05 |
| Effective atomic number | 33 |
| Light yield [photons/MeVy] | 8.0 x 104 |
| Background, pulse/sec/kg | - |
| Crystal cleavage plane | - |
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