CdWO4 Scintillation Crystal Description:
Cadmium Tungstate CdWO4 Scintillation Crystal is a new type of scintillation crystal material. Cadmium tungstate, the cadmium salt of tungstic acid, is a dense, chemically inert solid which is used as a scintillation crystal to detect gamma rays.
Cadmium Tungstate (CdWO4) Scintillation Crystal has been widely used in the field of the X-Ray detection thanks to its excellent properties. CdWO4 scintillator crystals are highly effective gamma-ray absorbers due to their high density and high Z characteristics.
CdWO4 Scintillation Crystal Advantages:
- Low afterglow
- Withstands high energy radiation damage
- High density, high Z scintillator
- Suitable for low activity counting applications
- Relatively high light yield
CdWO4 Scintillation Crystal Specifications:
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
|
CdWO4 Scintillation Crystal Applications:
- X-ray tomography
- Detection of slow neutrons
- Dosimetry