Cadmium tungstate

Cadmium tungstate is a high density, high Z scintillator with relatively high light yield. The emission maximum is at 475 nm, and the total light output is 12 to 15 photons/keV). The light yield relative to NaI(Tl) on a bialkali PMT is 30 to 50%

 

The intensity of the scintillation emission of CdWO4as a function of the temperature is shown in Figure 2 (irradiation with γ-rays). At room temperature (25oC), the curve is relatively flat (-0.1%/oC) which can be important for some applications.

 

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