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Ce: LuAG Scintillation Crystal Cerium doped Lutetium Aluminium High-density Fast decay time PET
Lutetium Aluminium Garnet (LuAG(Ce) - Lu3Al5O12:Ce)
scintillator crystals are relatively dense (6.73g/cm³), have a high Z (58.9), and have a fast decay time (70ns). With a peak emission of 535nm, LuAG(Ce) output is well matched to photodiodes avalanche photodiodes APDs and silicon photomultipliers (SiPMs). In addition, these crystals have good temperature properties. LuAG crystal is a specific type composed of lutetium aluminum garnet (LuAG) doped with cerium Ce or Pr ions. LuAG is a synthetic crystalline material known for its excellent scintillation properties and is widely used in various radiation detection applications.
High density
Fast decay time
The wavelength of luminescence emission is well suitable for Photodiode and Avalanche Diode readout
Chemical and mechanical resistance
Temperature resistance
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
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:Ce | |
| Chemical Formula | Lu3Al5O12:Ce |
| Density | 6.73 g/cm3 |
| Hardness by Mohs | 8.5 |
| Index of refraction | 1.84 |
| Melting point | 2020°C |
| Crystal structure | cubic |
| Wavelength of max. emission | 535 nm |
| Decay constant | 70 ns |
| Radiation length for 511 keV | 1.3 cm |
| Photon yield at 300 K (27°C) | 25 x 103 Ph/MeV |
| Integrated light output compared to NaI:Tl | 20 % NaI:Tl |
| Atomic Number (Effective) | 58.9 |
| Thermal Expansion Coeff. | 8.8 x 10‾⁶C⁻¹ |
| Cleavage Plane | None |
| Hygroscopic | No |
| Solubility | N/A |
Positron Emission Tomography (PET)
Imaging screens
High-energy gamma and charged particle detection.
X-rays, beta rays, and ultraviolet rays have high spatial resolution.
LED lighting and laser lighting.
Specialist applications in high energy, nuclear, space and medical physics
1.Q: What are the advantages of Ce: LuAG over other scintillation materials?
A: Ce:LuAG has higher light output efficiency, faster response time and higher energy resolution compared with other scintillation materials, which makes it more advantageous in some specific applications.
2.Q: What about the preparation and properties of Ce: LuAG?
A: Ce:LuAG materials are usually prepared by solid-phase reaction method or sol-gel method. The material has good stability and controllability, and its performance is affected by factors such as preparation process and doping concentration.
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Key words: Ce:LuAG crystal