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:
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Density (g/cm3)
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7.9
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Melting Point (K)
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1598
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Thermal Expansion Coefficient (C-1)
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10.2 x 10-6
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Cleavage Plane
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|
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Hardness (Mho)
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4-4.5
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Hygroscopic
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No
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Wavelength of Emission Max. (nm)
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475
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Lower Wavelength Cutoff (nm)
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330
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Refractive Index @ Emission Max
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2.2-2.3
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Primary Decay Time (ns)
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14000
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Light Yield (Photons/keVγ)
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12-15
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Photoelectron Yield (% of NaI(Tl)) (for γ-rays)
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30-50
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CdWO4 Scintillation Crystal Applications:
- X-ray tomography
- Detection of slow neutrons
- Dosimetry
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