LYSO(Ce) Scintillation Crystals
LYSO(Ce) - Lutetium Yttrium Orthosilicate (Lu₂SiO₅:Ce)is a relatively new scintillator crystal with a high density, high light output, short decay time and good radiation hardness characteristics.


LYSO(Ce) scintillator crystals advantages:
  • Good light output - 70% of NaI(Tl), 25 photons/keV
  • High density - 7.15 g/cm³
  • Fast decay times - c.45ns
  • Energy resolution - <12%
  • Not hygroscopic
  • Are relatively inexpensive

Issues to be aware of:
  • Mechanically brittle

LYSO(Ce) - is a useful scintillator for applications such as:
  • Time-of-Flight measurements
  • Industrial/Medical CT/XCT
  • Positron Emission Tomography (PET)
  • Those looking to discriminate between gamma rays and neutrons
  • Specialist applications in nuclear and high energy physics
LYSO(Ce) Scintillation Crystals
- Properties -
LYSO(Ce) Scintillator Emission Spectrum
LYSO(Ce) Mass Attenuation Coefficients
LYSO(Ce) Scintillation Crystals
- Optical Properties -
Property Units Value
Wavelength (Max. Emission) nm 410
Wavelength Range nm TBA
Decay Times ns 40
Light Yield photons/keV 25
Photoelectron Yield % of NaI(Tl) 75
Radiation Length cm 1.1
Optical Transmission µm TBA
Transmittance % TBA
Refractive Index 1.82@410nm
Reflection Loss/Surface % TBA
Neutron Capture Cross-section barns TBA
LYSO(Ce) Scintillation Crystals
- Mechanical Properties -
Property Units Value
Chemical Formula Lu₂SiO₅:Ce
Density g/cm³ 7.15
Atomic Number (Effective) 65
Melting Point ºK 2070
Thermal Expansion Coeff. C⁻¹ 7.0 x 10‾⁶
Crystal Structure Mono
Hardness Mho 5.8
Hygroscopic No
Solubility g/100gH₂0 N/A
LYSO(Ce) Scintillation Crystals
- Further Reading/Publications -
LYSO(Ce) Scintillation Crystals
- Sizes -
Diameters:
90 mm max.
Lengths:
200mm max.