Our Gd-based scintillators for neutron imaging
Gd2O2S:Tb scintillation plates
Scintillation plates for measurements with very high resolution.
Gadolinium has a very high capture cross-section and therefore enables layer thicknesses of 10 micrometres and less to achieve the highest possible resolution. The emission maximum is 549 nm, which matches the sensitivity of standard CCD camera systems very well.
Diagram Gd2O2S:Tb scintillation plates
Diagram Gd2O2S:Tb scintillation plates
6LiF / Gd2O2S:Tb scintillation plates
The 6LiF / Gd2O2S:Tb scintillation plates are a further development of the conventional Gd2O2S:Tb scintillation plates. They show a significantly increased light yield (30 - 50%!) with the same very high resolution! As with pure Gd2O2S:Tb, the emission maximum is 549 nm and matches the sensitivity of standard CCD camera systems very well.
Diagram 6LiF / Gd2O2S:Tb scintillation plates
Diagram 6-LiF / Gd2O2S:Tb scintillation plates
Isotope-enriched 157Gd scintillator
In 2015, Pavel Trtik from PSI was able to develop a 157Gd scintillator with outstanding resolution as part of the neutron microscopy project. These scintillators are currently the best on the market in terms of achievable resolution. Details can be found in the publication (Nucl. Inst. Meth. A, 2015, 788, 67 ff).
Standard scintillation screens based on Gd2O2S:Tb or Gd3Al3Ga2O12:Ce:
| Base material | Emission | Dimension | Thickness | Comment |
| 157Gd2O2S:Tb | 447 / 549 nm (blue-green) | 11 x 11 mm2 | ~5 µm | Best resolution |
| Gd2O2S:Tb | 447 / 549 nm (blue-green)) | up to 600 x 600 mm2 | 10 up to 40 µm | Very high resolution |
| Gd2O2S:Ce,Pr,F | 447 / 549 nm (blue-green)) | up to 600 x 600 mm2 | 10 up to 40 µm | Very high resolution and fast decay |
| Gd2O2S:Tb / 6LiF (20%) | 447 / 549 nm (blue-green) | up to 600 x 600 mm2 | 10 up to 50 µm | Very high resolution with enhanced intensity |
| Gd3Al2Ga3O12:Ce | 535 nm (green) | up to 600 x 600 mm2 | 10 up to 100 µm | Very high resolution and very short decay (~30 µs) |