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CdWO4 Scintillator Crystal

13 Aug 2019

Description

CdWO4 Scintillator Crystal—A monoclinic crystal with high luminous efficiency

CdWO4 single crystal is a monoclinic crystal system with good comprehensive scintillation performance, belonging to wolframite-type structure. Compared with other inorganic scintillation crystals, CdWO4 single crystal has high luminous efficiency, short afterglow time, large X-ray absorption coefficient, strong resistance to radiation damage, high material density, and absence of hygroscopicity. Due to these excellent scintillation properties of CdWO4, it has been widely used in nuclear medicine imaging, security inspection, industrial computer tomography (CT), petroleum logging, high-energy physics and other technical fields, especially in the field of medical X-ray CT, container inspection system has very important applications.

Scintillator is a photoelectric functional material, which refers to a material that stimulates pulsed light under the function of energetic particle(eg,x-rays,γ-rays,etc). Scintillation detectors with the core of scintillators have found utility for a variety of applications ranging from X-ray imaging to high-energy physics Cadmium tungstate is one of the best scintillation crystals for its excellent scintillation properties. The CdWO4 crystal is the core component of nuclear instrument detection,γ camera, XCT tomography imager and other photoelectric detection equipment. The wide application of CdWO4 crystal has greatly improved the working performance of medical XCT and the efficiency of security equipment. We are committed to customizing high performance CdWO4crystals according to customers’ specific requirements. 

Parameter

Chemical formula CdWO4
Density (g/cm3) 7.9
Melting point (℃) 1598
Hardness (Mho) 4-4.5
Hygroscopic No
Cleavage  
Thermal expansion coeff (C-1) 10.2*10-6
Wavelength(Max. emission) (nm) 490
Wavelength range (nm) 380~800
Decay time (ns) 14000
Light yield (photons/keV) 12~15
Light output relative to Nal(Tl) (%) 50
Refractive index 2.2-2.3
Radiation length (cm) 1.06
Afterglow (%) <0.1

CdWO4 CL emission spectraCdWO4 Ttansmission spectraCdWO4 X-ray emission spectra

Feature

  • Excellent thermal and chemical stability
  • Low radiation damage
  • Low afterglow to luminescence
  • High average refractive index
  • High density
  • High X-ray absorption coefficient
  • Low level of intrinsic radioactivity

Application

CONTACT DETAILS
Nanjing Crylink Photonics Co.,Ltd
No.3, Hengda Road, Economic and Technological Development Zone, Nanjing, China
No.200,Zhaoxian Road,Jiading District,Shanghai City
Nanjing
Jiangsu
210038
China
Tel: (86)025-68790684
Fax: (86)025-68790685
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