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cdwo4 substrate
cdwo4 substrate
cdwo4 crystal substrates

CdWO4 Substrates

Cadmium tungstate (CdWO4 or CWO) is a monoclinic crystal with a wolframite structure and has good comprehensive scintillation properties. The peak scintillation wavelength of CdWO4 crystal is 480 nm (with emission range between 380-660 nm), and the efficiency is 13000 photons/MeV, when it is hit by gamma rays and x-rays. Because of high luminous efficiency, short afterglow time, large X-ray absorption coefficient, strong resistance to radiation damage, and high material density, CdWO4 crystal is widely used in nuclear inspection, γ camera, X-CT, High energy physics, and container inspection, etc. The combined application of CdWO4 crystal and B4C can form a compact gamma-ray and neutron radiation detector. At the same time, CdWO4 crystals can be used to detect rare nuclear processes, such as double β decay, other rare α, and β decay.


OST Photonics offers high quality CdWO4 substrates for researchers and industries. Crystal orientation, size and thickness can be customized according to your requirements.


Application of CdWO4 Substrates


  • Industrial computed tomography (CT) scanners

  • Medical computed tomography (CT) scanners

  • Security inspection

  • High energy physics



Advantages of CdWO4 Substrates


  • Low afterglow

  • Relatively high light yield

  • Strong radiation resistance

  • High density

  • high atomic number

  • No radioactive background



Ability of CdWO4 Substrates


  • Orientation:<010>,<100>, etc.

  • Maximum Size: ɸ80mm x 200mm

  • Dimension: 10x10mm, 10x5mm, 5x5mm, etc.

  • Thickness: 0.5mm, 1.0mm, etc.

  • Available items: substrate, blanks, linear or 2-D array and customized optics



Specification and Properties of CdWO4 Substrates


Crystal Structure

Monoclinic

Lattice Constant

a = 5.029 Å ; b = 5.859 Å ; c = 5.074 Å

α=γ= 90°, β= 91.47°

Density

7.9 g/cm3

Melting Point

1325℃

Hardness

4.5 Mohs

Thermal Expansion Coefficient

6.39×10^-6 /k @<100>; 1.09×10^-5 /k @<010>

Refractive Index

2.3@ 633 nm

Orientation

<010>,<100>, etc.

Orientation Tolerance

±0.5° or better

Dimension

10x10mm, 10x5mm, 5x5mm, etc.

Dimension Tolerance

±0.1 mm or better

Thickness

0.5mm, 1.0mm, etc.

Thickness Tolerance

±0.05 mm or better

Surface Finish

Single side polished (SSP)/Double sides polished (DSP)

Color and Appearance

Yellow to colourless depend on annealing

Package

Class 100 clean bag, Class 1000 super clean room


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