Basic Properties:
|
Melting Point (°C) |
1598 |
Density (g/cm3) |
7.9 |
| Hygroscopic |
None |
Hardness (ns) |
4~4.5 |
| Wavelength of Emission Max. (nm) |
475 |
Refractive Index @ Emission Max |
2.2~2.3 |
| Decay Time (ns) |
14000 |
Light Yield (photons/MeV) |
12000~15000 |
| Photoelectron Yield (% of NaI(Tl)) (for γ-rays) |
30~50 |
Afterglow(%@3ms) |
<0.1 |
| Radiation Length(cm) |
1.06 |
|
Specifications and Abilities:
|
Growth Method |
Bridgman |
Maximum Dimension |
∅ 80 mm x 200 mm |
| Available Items |
Single crystal and 1D array or 2D array |
Inhomogeneity between pixels in array |
<15% |
CdWO4-Cadmium tungstate scintillation crystal is characterized by high density, high atomic number and relatively high light yield with extremely low decay time. When subjected to x-ray irradiation, the after-glow of CdWO4 is very slow typically less than 0.1% at 3ms, and CdWO4 scintillators also demonstrate very good resistance to radiation. All of these features are significant and make CdWO4 a primary scintillation crystal for x-ray Computerized Tomography (CT) and X-ray security scanning inspection.
Hangzhou Shalom EO offers the custom CdWO4 crystals and CdWO4 arrays upon customer's request, the linear or one-dimension (1D) and two-dimension (2D) arrays are available, and the CdWO4 scintillation array integrated with Photodiode (PD) assemblies are also offered.
Applications
- Security inspection
- X-ray CT
- High energy physics
- Nuclear medicine
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
- 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
- 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
...
Scintillation Detection Arrays (Coupled with Si PDs)
- Linear Scintillation Array + Monocrystalline Si Photodiode Array + Mounting Board
- Element size width 1.4mm, height 2.5nm, with element pitch of 1.575nm
- Modules of 16 elements, 64 elements, and 128 elements are available
- Wide spectral range of 350-1100nm (responsitivity peak at 950nm)
- A variety of scintillator materials including: CsI(Tl), GOS ceramic, CdWO4 or other custom choices
- Dual energy inspection is enabled when combining a CsI(Tl) detector for high energy and GOS detector for low energy
...
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