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  • CsI(Tl) Arrays
  • CsI(Tl) Arrays
  • CsI(Tl) Arrays
  • 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 or crystal element size: 0.3mmx0.3mm
  • Afterglow: cutom
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Specifications and abilities:

Single Pixel Size: customized

Minimum Pixel Size: 0.3x0.3mm

Linear Arrays:  1x8, 1x16, 1x32, 1x64, 1x128…pixels

2-Dimensional Array:  6×10, 12×18, 24×36..... pixels ect.

Afterglow:  0.6%(max) after 100ms (Other afterglow available upon request)

Reflector:  TiO2, BaSO4, ESR etc.

Reflector Thickness: Customized

Basic Properties:

Melting Point(K) 894 Density (g/cm3) 4.51
Cleavage Plane None Hardness(Mohs) 2
Hygroscopic Slightly Refractive Index @ Emission Peak 1.79
Emission Peak Wavelength(nm) 550 Lower Wavelength Cutoff(nm) 330
Decay Time(ns) 1000 Light Yield((photons/KeV) 54

Thallium doped cesium iodide (or CsI(Tl)) is one of the brightest scintillators with the fluorescence spectrum with maximum at 550nm, which allows using photodiodes for detection of the emission. Because a scintillator-photodiode pair can be used, it is possible to reduce significantly the size of the detection system, to do without a high-voltage power supply, and to use the detection system in magnetic fields. CsI(Tl) has a high effective atomic number and consequently larger cross-section of the gamma-radiation photoabsorption. 

CsI(Tl) has very good stopping power, is slightly hygroscopic and with good plastic mechanical properties. Combined with a relatively good radiation hardness properties, CsI(Tl) is also well suited for High Energy Physics. It is used in Phoswiches for whole body counting and X-ray astronomy as the "guard crystal" with typically a thin NaI(Tl) as the primary detector. Depending on growth conditions CsI(Tl) crystals can be obtained with low afterglow for application in tomographic systems. 
Hangzhou Shalom EO provide the one dimension or 2 dimension CsI(Tl) pixellated arrays which are used in the X-Ray scanning systems for medical and security applications. The PD can be also assemblied with CsI(Tl) array if it is required.


  1. Medical X-ray Computer Tomographs (CT)
  2. Environmental monitoring:  gamma-radiation monitoring
  3. Security control:  active potral monitors, X-ray scaning systems, radiation isotope identification devices
  4. Industrial –health physics, neutron activation analysis, non-destructive testing (defectoscopy)
  5. High Energy Physics (HEP) and Electromagnetic calorimeter of Astrophysics
  6. Position sensitivity detectors


CdWO4 Arrays

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
  • Minimum pixel or crystal element size : 0.3mm x 0.3mm
  • Application Notes:Security inspection,X-ray CT,High energy physics,Nuclear medicine

CsI(Tl) Scintillator Crystals

CsI(Tl) Scintillator Crystals

  • Extremely High Light Output
  • Excellent Mechanical Properties
  • CsI(Tl) Crystals and CsI(Tl) Arrays Available
  • Custom Short After-glow available
  • Applications: Nuclear Radiation Detection, Security and Industrial Inspection, Medical CT

GOS (Gd2O2S:Pr) Scintillation Arrays

GOS (Gd2O2S:Pr) Scintillation Arrays

  • 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
  • Minimum pixel or crystal element size : 0.3mm x 0.3mm
  • Applications:Computerized Tomography (CT) Scanners, security devices and non-destructive testing systems