CdWO4 Scintillator (CdWO4 Scintillation Crystal)
Cadmium tungstate (CdWO₄), a top-tier monoclinic scintillation crystal, boasts exceptional properties. With a high density of 7.9 g/cm³, strong X-ray absorption, and remarkable radiation resistance, it delivers efficient light output (around 40% of NaI(Tl)). Its low afterglow and non-hygroscopic nature make it ideal for medical CT, industrial inspection, and high-energy physics research.
OST Photonics is capable of supplying CdWO₄ scintillation crystals in various forms, ranging from bulk crystals to precision-fabricated linear or 2D arrays, all customizable according to your exact requirements.
Application
Medical X-ray CT imaging
Industrial non-destructive testing (NDT)
Security inspection systems
High-energy physics experiments
Features
High density (7.9 g/cm³)
Large X-ray absorption coefficient
Low afterglow (<0.1% at 30 ms)
Excellent radiation hardness
Non-hygroscopic nature
Production and Supply Capability
Maximum Size: ɸ80mm x 200mm
Available items: monolithic crystal, linear or 2-D array
Properties
Density [g/cm3] | 7.9 |
Melting Point [K] | 1598 |
Thermal Expansion Coefficient [C-1] | 10.2 x 10-6 |
Cleavage Plane | (010) |
Hardness (Mho) | 4-4.5 |
Hygroscopic | No |
Wavelength of Emission Max. [nm] | 475 |
Lower Wavelength Cutoff [nm] | 330 |
Refractive Index @ Emission Max | 2.2-2.3 |
Primary Decay Time [ns] | 14000 |
Light Yield [Photons/keVγ] | 12-15 |
Photoelectron Yield [% of NaI(Tl)] (for γ-rays) | 30-50 |