LuAG(Pr) Scintillation Crystals
Lutetium Aluminium Garnet - LuAG(Pr) - is a relatively dense scintillator with a fast decay time (20ns). It’s peak emission is at 310nm. Good temperature properties.

LuAG(Pr) scintillator crystals have:
  • Mechanically robust characteristics and are non-hygroscopic
  • Stable scintillating characteristics up to c.100 rad
  • Virtually no afterglow emissions
  • No cleavage planes, so can me easily machined into various shapes and geometries

LuAG(Pr) scintillator crystals have the following issues which should be noted. They:
  • Have a light emission which a is good part is above 500nm, a region where photomultipliers are less sensitive
  • Are intrinsically radioactive making it unacceptable for some applications
  • Are susceptible to radiation damage, starting with doses between 1 and 10 Gray (10² - 10³ rad). Reversible with time or annealing.

LuAG(Pr) scintillator crystals are useful in diverse applications such as:
  • Positron Emission Tomography (PET)
  • Imaging screens
LuAG(Pr) Scintillation Crystals
- Properties -
LuAG(Pr) Scintillator Emission Spectrum
LuAG(Pr) Mass Attenuation Coefficients
LuAG(Pr) Scintillation Crystals
- Optical Properties -
Property Units Value
Wavelength (Max. Emission) nm 310
Wavelength Range Cut-off nm TBA
Decay Times ns 20
Light Yield photons/keV 22
Photoelectron Yield % of NaI(Tl) 20
Radiation Length cm 1.41
Optical Transmission µm TBA
Transmittance % TBA
Refractive Index 2.03 @310nm
Reflection Loss/Surface % TBA
Neutron Capture Cross-section barns TBA
LuAG(Pr) Scintillation Crystals
- Mechanical Properties -
Property Units Value
Chemical Formula LuAG(Pr)
Density g/cm³ 6.73
Atomic Number (Effective) 62.9
Melting Point ºC 2043
Thermal Expansion Coeff. C⁻¹ 8.8 x 10‾⁶
Cleavage Plane None
Hardness Mho 7.5
Hygroscopic No
Solubility g/100gH₂0 N/A
LuAG(Pr) Scintillation Crystals
- Further Reading/Publications -
LuAG(Pr) Scintillation Crystals
- Sizes -
Diameters:
50 mm max.
Lengths:
135 mm max.