Miracrys

CdWO₄ - Cadmium Tungstate

Cadmium Tungstate ( CdWO₄ or CWO) is a widely used scincillator material. CWO is often a preferable option in such applications as computer-aided tomography, spectrometry and gamma-rays detection. CdWO₄ is characterized by long decay time, low intrinsic phosphorescence and high light output.
We grow CdWO₄ from the melt by Czochralski method. If specific qualities are required we can dope CWO with Mo, Nd, Gd or other elements.

Basic properties

Structure	Monoclinic
Cleavage plane	(010)
Melting point	1325 °C
Density:	7.9 g/ cm³
Wavelength of max. emission	540 nm
Decay constant	5000 ns
Refractive index at emission maximum	2.25
Light output relative to NaI(Tl)	40 %
Max. crystal diameter	55 mm

Spectrum

Products

CdWO₄ plates

Diameter/Width	55 mm
Thickness/length	0.1-30 mm
Surface quality	80/50, 60/40, 40/20 per MIL-0-13830
Orientation	(010)

*The optimal and most cost-effective items are those with the diameter of 30-38 mm and the thickness of 1-2 mm