Specifications and Capabilities:
Single Pixels Size: customized
Linear Array: 8, 16, 32, 64…pixels
2-Dimensional Array: 6×10, 12×18, 24x36....pixels
Light Output: 12,000-15,000 Photons/MeV
Afterglow: 0.1%(max) after 3ms
Reflector: TiO2, BaSO4, ESR ect.
Basic Properties:
| Melting Point (℃) | 1598 | Density (g/cm3) | 7.9 |
| Hygroscopic | None | Hardness(ns) | 4-4.5 |
| Wavelength of Emission Max.(nm) | 475 | Refractive Index of Emission Max | 2.2-2.3 |
| Decay Time(ns) | 14000 | Photoelectron Yield (% of NaI(Tl)) (for γ-rays) | 30-50 |
| Afterglow(%@3ms) | <0.1 | Radiation Length(cm) | 1.06 |
Cadmium tungstate (CdWO4) is a high-z (large atomic number) scintillator with a decent high light yield and extremely low afterglow. The afterglow at 3ms is less than 0.1%. The emission maximum is at 475nm and the total light output is 12 to 15 photons/keV. The light yield relative to NaI(Tl) on a bialkali PMT is 30 to 50%. The massive nuclei of CdWO4 mean high stopping power and make it an efficient absorber, in particular for high-energy X-radiation. It takes only 3mm to stop up to 150keV photons. The low afterglow of CdWO4 scintillators is of great importance for fast inspection, for instance, in cargo containers. CdWO4 is an ideal material for high-energy physics due to its high endurance to high power radiations.
