Lutetium-yttrium oxyorthosilicate
Lutetium-yttrium oxyorthosilicate, also known as LYSO, is an inorganic chemical compound with main use as a scintillator crystal. Its chemical formula is Lu2(1-x)Y2xSiO5. It is commonly used to build screens and electromagnetic calorimeters in particle physics. LYSO crystals have the advantages of high light output and density, quick decay time, excellent energy resolution.
| Density (g/cm3) | 7.4 |
| Effective Atomic Number | 66 |
| Radiation length (cm) | 1.10 |
| Decay Constant (ns) | 40-44 |
| Peak Emission (nm) | 428 |
| Light Yield (Relative BGO=100%) | 190 |
| Index of Refraction | 1.82 |
| Peak excitation (nm) | 375 |
| Radiation Hardness (rad) | >106 |
| Melting Point (°C) | 2050 |
| Hardness (Mohs) | 5.8 |
| Identifiers | |
|---|---|
| Properties | |
| Lu2(1-x)Y2xSiO5 | |
| Density | 7.3 g/cm3 |
| Melting point | 2,047 °C (3,717 °F; 2,320 K) |
Refractive index (nD) |
1.82 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
References
- http://authors.library.caltech.edu/8520/1/CHEieeetns07b.pdf
- http://omegapiezo.com/crystal_scintillators.html
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