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).
|Melting point (℃)||2043|
|Thermal conductivity (W/mK)||9.7|
|Thermal expansion coeff (C-1)||8.8*10-6|
|Wavelength(Max. emission) (nm)||310|
|Decay time (ns)||20|
|Light yield (photons/keV)||22|
|Light output relative to Nal(Tl) (%)||20|
|Radiation length (cm)||1.41|
|Optical transmission (um)||TBA|
|Reflection loss/surface (%)||TBA|
|Energy resolution (%)||≤5|
|Neutron Capture Cross-section (barns)||TBA|