Gadolinium oxyorthosilicate
Gadolinium oxyorthosilicate (known as GSO) is a type of scintillating inorganic crystal used for imaging in nuclear medicine and for calorimetry in particle physics.
The formula is Gd2SiO5. Its main properties are shown below:
| Density (g/cm3) | 6.7 |
| Melting Point (°C) | 1900 |
| Radiation Length (cm) | 1.38 |
| Decay Constant (ns) | 50-60 |
| Light Yield (relative BGO=100%) | 110 |
| Index of Refraction | 1.87 |
| Peak Excitation (nm) | 350 |
| Radiation Hardness (rad) | >106 |
| Hygroscopic | No |
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