Advantage:
High density
Strong anti-radiation ability
No background radiation
Application:
Security check
Industrial CT
Medical CT
High-energy physics detection
Specification Parameter
| Properties | Value | Unit |
| Density | 7.90 | g/cm³ |
| Wavelength of emission max. | 475 | nm |
| Light yield | 13,000 | Photon/Mev |
| Decay Constant | 14000 | ns |
| Hardness | 4 - 4.5 | Mohs |
| Refractive index | 2.2-2.3 | |
| Hygroscopic | No | |
| Cleavage | (010) | |
| Thermal Expansion Coefficient | 10.2×10-6 | C-1 |
CdWO4 (Cadmium Tungstate) is a high-density scintillator with a high Z and relatively high light yield. Its strong light output and extremely low afterglow make it an ideal choice for CT detectors in both medical and industrial applications, particularly when paired with silicon photodiodes. The material also exhibits excellent radiation resistance and minimal temperature dependence across the 0°C to 60°C range. Its high density makes it particularly suitable for security scanning systems used in baggage, container, and vehicle inspections.
EBO offers CdWO4 crystals in a wide range of customized shapes and sizes to meet specific application needs. In addition to single-crystal, EBO can fabricate linear arrays and two-dimensional array configurations. These arrays typically use TiO₂ as the internal reflector material between pixels to enhance optical performance.
Related Products
BGO (Bismuth Germanate) is a high-Z, high-density scintillating crystal. The material has a high atomic number (Z=83 for bismuth) and a density of 7.13 g/cm³, making it a highly efficient gamma-ray absorber.
Due to the high-Z properties of the material, the gamma-ray-induced light absorption fraction is significantly enhanced, resulting in an excellent peak-to-total ratio.
Advantage:
Excellent energy resolution
Dual detection capability
Fast response time
High light yield
Advantage:
High light outputs
Best energy resolution
Fast emission
Excellent radiation hardness
Fast decay times
Advantage:
No background radiation
Fast decay time
Mechanically robust characteristic
Advantage:
High sensitivity
Low afterglow
Fast conversion
LYSO(Ce) - Lutetium Yttrium Orthosilicate (Lu₂SiO₅:Ce) is a relatively new scintillator crystal that features high density, high light output, short decay time and good radiation resistance. These properties make it ideal for detecting and measuring ionizing radiation such as gamma rays and positrons.
Advantage:
High energy resolution
High light output
High photon yield
Cesium iodide (CsI(Tl)), activated by thallium, is one of the most efficient scintillators discovered so far. CSI Crystal exhibits thallium-activated luminescence with an emission peak at 550 nm and a light output of 45% relative to NaI(Tl). In contrast, cesium iodide activated by sodium (CsI(Na)) features a sodium-activated emission peak at 420 nm and a higher light output (85% of NaI(Tl)). Both materials share properties such as deliquescence, soft and plastic mechanical behavior, radiation resistance, high-temperature tolerance, and fast timing characteristics (for pure CsI). They are widely used in particle detection for high-energy physics experiments, medical SPECT imaging, baggage/container security inspection, industrial level sensing and non-destructive testing, and cosmic ray research in space physics.
Advantage:
High photon yield
High energy resolution
Non-hygroscopicity
GAGG Scintillation Crystal Gadolinium Aluminum Gallium Garnet
Advantage:
High sensitivity
Low afterglow
Fast conversion