| Names | |
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| IUPAC name dioxido(oxo)silane;gadolinium(3+);oxygen(2-) | |
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| Properties | |
| Chemical formula | Gd2O5Si |
| Molar mass | 422.58 g·mol |
| Density | 6.7 g/cm |
| Melting point | 1,900 °C (3,450 °F; 2,170 K) |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references | |
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 |
References
- Suzuki, H.; Tombrello, T. A.; Melcher, C. L.; Peterson, C. A.; Schweitzer, J. S. (1994-08-01). "The role of gadolinium in the scintillation processes of cerium-doped gadolinium oxyorthosilicate". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 346 (3): 510–521. Bibcode:1994NIMPA.346..510S. doi:10.1016/0168-9002(94)90586-X. ISSN 0168-9002.