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CdWO4 Arrays

  • Low afterglow and High density, High Z scintillator
  • Relatively High light yield and High resistance of energy radiation damage
  • Suitable for low activity counting applications
  • Single Element at customized sizes available
  • Linear Arrays of 8, 16, 32, 64…elements and 2-Dimensional Arrays of 6×10, 12×18, 24×36…elements availble
  • Application Notes:Security inspection,X-ray CT,High energy physics,Nuclear medicine
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Specifications and abilities:
Single Pixels Size: customized
Linear Array: 8, 16, 32, 64…pixels
2-Dimensional Array:  6×10, 12×18, 24x36....pixels
Light Output: 12,000-15,000 Photons/MeV
Afterglow:  0.1%(max) after 3ms
Reflector:  TiO2, BaSO4,  ESR ect.


Basic Properties:

Melting Point (℃) 1598 Density (g/cm3) 7.9
Hygroscopic None Hardness(ns) 4-4.5
Wavelength of Emission Max.(nm) 475 Refractive Index of Emission Max 2.2-2.3
Decay Time(ns) 14000 Photoelectron Yield (% of NaI(Tl)) (for γ-rays) 30-50
Afterglow(%@3ms) <0.1 Radiation Length(cm) 1.06

 


Cadmium tungstate (CdWO4) is a high density, high atomic number scintillator with relatively high light yield, and extreme low after glow. The after glow at 3ms is less than 0.1%. 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%. The high density and stopping power of CdWO4 make it an efficient absorber, particularly for high energy X-ray. It takes only 3mm to stop up to 150keV photons.  CdWO4 scintillators has extremely low afterglow property, which is of great importance of fast inspection, especially in the cargo container of customs, while in the X- ray Computerized Tomography (CT) equipment due to its relatively high light output, high density and strong prevention of X ray property, also in the high energy physics because of its strong anti-radiation.

Hangzhou Shalom EO offers the custom CdWO4 arrays according to customer's request, our CWO arrays are widely used in X-ray Computerized Tomography (CT) equipment, security cargo inspecitons, high energy physics and nuclear medicine applications. 



CsI(Tl) Arrays

CsI(Tl) Arrays

  • High mechanical hardnessv
  • Peak emission wavelength well matching with Si photodiode readoutv
  • Linear Arrays of 1x8, 1x16, 1x32, 1x64, 1x128…pixelsv
  • 2-Dimensional Arrays of 6×10, 12×18, 24×36... pixels
  • Minimum pixel size: 0.3x0.3mm
  • Afterglow: cutom
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CdWO4 Scintillator Crystals

CdWO4 Scintillator Crystals

  • Low afterglow
  • High density and High-Z scintillator
  • Relatively high light yield and High Radiation Hardness
  • Single crystal and CdWO4 1D array or 2D arrays offered
  • Main applications: Security inspection, X-ray CT, High energy physics, Nuclear medicine
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GOS (Gd2O2S:Pr) Scintillator Array

GOS (Gd2O2S:Pr) Scintillator Array

  • Relatively High Light Output and High Density,Good Machinability
  • Low Afterglow less than 0.1% at 3 ms and Excellent Moisture Resistance, goodchemical stability
  • Well matched with the spectral sensitivity of silicon photodiodes (Si PD)
  • Emission peak spectral range at 470 ~ 900 nm
  • Applications:Computerized Tomography (CT) Scanners, security devices and non-destructive testing systems
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