GSO(Ce) Scintillator Crystal

GSO Scintillation Crystals

Gadolinium Orthosilicate - Gd₂SiO₅(Ce) is an effective all-round gamma-ray absorber. It is referred to both as GSO and GSO(Ce), it is only available with Ce doping.

GSO scintillator crystals have:

  • Mechanically robust characteristics and are non-hygroscopic
  • Good energy resolution up to 150°C
  • Good radiation hardness
  • No intrinsic radiation background

GSO scintillator crystals have the following issues which should be noted. They:

  • Have have limited light output

Gadolinium Orthosilicate - GSO scintillator crystals are useful in diverse applications such as:

  • Positron Emission Tomography (PET)
  • Geological logging
  • Specialist applications in high energy, nuclear, space and medical physics

GSO Scintillation Crystals - Optical Properties

Property Units Value
Wavelength (Max. Emission) nm 430
Lower Wavelength Cut-off nm TBA
Decay Times ns 30 - 60
Light Yield photons/keV 8 to 10
Photoelectron Yield % of NaI(Tl) 20
Radiation Length cm 1.38
Optical Transmission µm TBA
Attenuation cm⁻¹ 0.67
Transmittance % TBA
Refractive Index 1.85
Reflection Loss/Surface % TBA
Neutron Capture X-section barns TBA
Radiation Hardness Gy >10⁶

GSO Scintillation Crystals - Mechanical Properties

Property Units Value
Chemical Formula Gd₂SiO₅(Ce)
Density g/cm³ 6.7
Atomic Number (Effective) 58
Melting Point ºK 1900
Thermal Expansion Coeff. C⁻¹ 4 - 12 x 10⁻⁶
Crystal Structure Mono
Hardness Mho 5.7
Hygroscopic No
Solubility g/100gH₂0 N/A

Further Reading/Publications

Sizes

Property Value
Diameters 80mm max.
Lengths 400mm max.

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