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 CdWO4 / CWO- Cadmium Tungstate


CdWO4 sscintillator crystals are  highly effective gamma-ray absorbers due to their high density and

high Z characteristics.


CdWO4 scintillator crystals are:



CdWO4 scintillator crystals have the following issues which should be noted. They:



CdWO4 scintillator crystals are useful in diverse applications such as:







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Properties

Mechanical

Units

Value

Density

g/cm³

7.9

Atomic Number (Effective)


74

Melting Point

ºK

1325

Thermal Expansion Coeff.

C⁻¹

10.2 x 10‾⁶

Cleavage Plane


Mono

Hardness

Mho

4 to 4.5

Hygroscopic


No

Solubility

g/100gH0

N/A

CdWO4 Scintillation Crystals - Sizes


CdWO4 Scintillation Crystal - Properties


Diameters:  Up to 80mm

Lengths:      Up to 100mm






Properties

Optical/Scintillation

Units

Value

Wavelength (Max. Emission)

nm

490

Lower Wavelength Cut-off

nm

TBA

Decay Time

ns

5000

Light Yield

photons/keV

28

Photoelectron Yield

% of NaI(Tl)

35 - 40

Radiation Length

cm

1.06

Optical Transmission

µm

TBA

Transmittance

%

TBA

Refractive Index


TBA

Reflection Loss/Surface

%

TBA

Neutron Capture Cross-section

barns

TBA

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