Chemical Formula: | Pr:Lu3Al5O12 | Density (g/cm3): | 6.73 |
---|---|---|---|
Melting Point (℃): | 2043 | Hardness (Mho): | 7.5 |
High Light: | cerium doped yttrium aluminum garnet,lutetium yttrium oxyorthosilicate |
Pr doped Lu3Al5O12(LuAG), which was first introduced in 2005, has attracted great attention for its good scintillator performance having high density (6.7 g/cm3), fast decay time(~20 ns), high light yield and excellent energy resolution of 4.6%. Those demonstrated it a competitive scintillator.
Pr:LuAG Scintillator Crystal— A promising Fast Scintillator used for TOF
Scintillators with high light yield and fast decay are essential in the time-of-flight (TOF) technique for a satisfactory coincidence timing resolution to give precise TOF information. Among garnets, Pr:Lu3Al5O12 was pointed out as a promising fast scintillator already in 2005. Pr:LuAG has a decay time of about 20 ns, which is even shorter than that of Ce:LSO. The light yield of Pr:LuAG is 3 times higher than that of BGO. In addition, Pr:LuAG has a high density of 6.7 g/cm3 which is important of x and g-ray detection, as well as an outstanding energy resolution of 4.6% at 662 keV that is beneficial for gamma ray discrimination. It has been attracting much attention and is presently commercially used in Positron Emission Mammography (PEM).
Chemical formula | Pr:Lu3Al5O12 |
Density (g/cm3) | 6.73 |
Melting point (℃) | 2043 |
Hardness (Mho) | 7.5 |
Hygroscopic | No |
Cleavage | No |
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 index | 2.03@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 |