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Jiaxing AOSITE Photonics Technology Co.,Ltd.
cdwo4 crystal array
cdwo4 crystal array
cdwo4 array

CdWO4 Array

CdWO4 Cadmium tungstate crystal is a high density, high atomic number scintillator with a relatively high light yield. The emission maximum is at 475nm 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%. In addition, it also has the advantages of strong radiation resistance and no radioactive background. CdWO4 array is widely used in fast inspection applications, such as luggage, container and vehicle scanning for security. And its advantages of high light output and low afterglow make it ideal for medical and industrial Computed Tomography (CT) scanners.


OST photonics is able to supply CdWO4 linear arrays and CdWO4 2-D arrays according to our customers’ requirements. We usually use titanium dioxide (TiO2) as the reflector between each single pixel (element).


Applications of CdWO4 Array


  • Industrial computed tomography (CT) scanners

  • Medical computed tomography (CT) scanners

  • Security inspection

  • High energy physics


Advantages of CdWO4 Array


  • Low afterglow

  • Relatively high light yield

  • Strong radiation resistance

  • High density

  • high atomic number

  • No radioactive background


Specifications of CdWO4 Array


  • Linear array: 1x8; 1x16; 1x32; 1x64 etc. (customized upon request)

  • 2-D array: 6x10; 12x18; 24x36 etc. (customized upon request)

  • Minimal pixel size: 0.3 mm x 1 mm


Reflector Types and Thicknesses of CdWO4 Array


Material

Thickness of reflector material + adhesive

TiO2

≥0.1 mm

BaSO4

≥0.1 mm


Properties of CdWO4 Cryatal


Relative Light Output of NaI(Tl)

30%~50%

Scintillation Decay Time (ns)

14000

Emission Peak Wavelength (nm)

475

Refractive Index (peak wavelength)

2.3

Density(g/cm3)

7.9

Hygroscopic

No

Mohs hardness

4.5

Afterglow

<0.01%@20ms

Cleavage plane

<010>

Radiation length (cm)

1.0

Light yield (photons/keV)

12~15



cdwo4-array.jpg


Quality Control for CdWO4 Array


  • Dimension testing

  • Relative light output testing

  • Pixel light output uniformity testing

  • Energy resolution testing

  • Scatter map


Contact Us
Welcome your presence, you can send us an email, we will get in touch with you within 24 hours.
Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
sales@ostphotonics.com; info@ostphotonics.com +86-0571-86780460