Pr: LuAG crystal (chemical Pr: Lu3Al5O12, also known as Pr-doped aluminium garnet crystal) is a scintillation crystal with excellent performance and is widely used in high energy physics, oil logging, and other fields. The light output is up to 20,000 photons/MeV, which is about three times that of BGO. Decay time (about 20ns) and energy resolution (4.9%@662KeV) are better than BGO and Ce: LYSO. Pr: LuAG crystals have a strong ability to prevent gamma rays, and are non-tidal, inexpensive. Therefore, Pr: LuAG crystals have important applications in nuclear medicine imaging and other fields. In particular, Pr: LuAG crystals have a decay time of 20ns and are well suited for applications such as time-of-flight positron emission tomography (TOF-PET) and fast ion imaging. The Pr: LuAG crystal is also suitable for positron emission breast cancer scanners (PEM).


Parameter

Material Features

Chemical formulaPr:Lu3Al5O12
Density (g/cm3)6.73
Melting point (℃)2043
Hardness (Mho)7.5
HygroscopicNo
CleavageNo
Solubility (g/100gH2O)N/A
Thermal conductivity (W/mK)9.7
Thermal expansion coeff (C-1)8.8*10-6

Scintillator Properties

Wavelength(Max. emission) (nm)310
Decay time (ns)20
Light yield (photons/keV)22
Light output relative to Nal(Tl) (%)20
Refractive index2.03@310nm
Radiation length (cm)1.41
Optical transmission (um)TBA
Transmittance (%)TBA
Reflection loss/surface (%)TBA
Energy resolution (%)≤5
Neutron Capture Cross-section (barns)TBA
Afterglow (%)<0.3

Spertrum

Feature

  • Strong gamma ray blocking ability
  • Not easy to tide
  • High light output
  • Fast decay time
  • Low energy resolution

Application

  • Time-of-flight positron emission tomography (TOF-PET)
  • Fast Ion Imaging
  • Positron Emission Mammography (PEM)
  • High Energy Physical Detection
  • Petroleum Logging

Reference

[1]  Omidvari N ,  Sharma R ,  Ganka T R , et al. Characterization of 1.2×1.2 mm2 silicon photomultipliers with Ce:LYSO, Ce:GAGG, and Pr:LuAG scintillation crystals as detector modules for positron emission tomography[J]. Journal of Instrumentation, 2017, 12(04):P04012-P04012.
[2] Bonesini, M, Falcone ,et al. Characterization of Pr:LuAG scintillating crystals for X-ray spectroscopy[J]. Nuclear Instruments and Methods in Physics Research, Section A. Accelerators, Spectrometers, Detectors and Associated Equipment, 2016, 824:212-214.
[3]  Drozdowski W ,  Brylew K ,  Witkowski M E , et al. Effect of thermal annealing on light yield, low temperature thermoluminescence, and time profiles of LuAG:Pr scintillator crystals[J]. Radiation Measurements, 2013, 56(Complete):80-83.

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