Comparison of properties with other materials
| Material | CsI(Tl) | GOS:Tb | GOS:Pr |
| Peak Wavelength | 560 | 550 | 510 |
| Morphology | Cubic | Poly-crystalline Ceramic | Poly-crystalline Ceramic |
| Transparency | Transparent | Translucent | Translucent |
| Light Output/MeV | 59000 | 46500 | 27000 |
| Decay Time/ns | 1 | 600 | 3 |
| Afterglow/@3ms | ≤1% | ≤0.1% | ≤0.05% |
| Atomic Coefficient | 64 | 60 | 60 |
| Density/g-cm3 | 4.51 | 7.34 | 7.34 |
| Hygroscopicity | Slightly | No | No |
| Irradiation Damage | / | 12%(1Mrad) | 6%(1Mrad) |
GOS ceramic (Gd2O2S) belongs to a hexagonal system structure. Among numerous inorganic scintillators, gadolinium oxysulfide (Gd2O2S, GOS) based materials are quite attractive for their high density (7.34 g/cm3), wide band gap (4.6 eV), and high radiation resistance. GOS doped with Tb ion features high light output, no harmful content to the environment, and low after-glow. The emission peaks range from 470 to 900 nm; it is typically paired with low energy detectors operating 25-130kV and could be used for various purposes such as CT scanners, radiation detection, security devices, and non-destructive testing.
Recently, with the rapid development of neutron detection technology, GOS: Tb scintillator has shown excellent prospects due to its ultrahigh neutron capture cross-section of Gd, high spatial resolution, and good coupling with CCD camera (GOS has a powder-like structure, it could be coupled with sensors of any pixel size).
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