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) 1.38Decay 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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