Ce: GAGG crystal (chemical formula Ce: Gd3Al2Ga3O12, also known as cerium-doped gadolinium aluminum gallium garnet crystal) is a scintillation crystal with excellent comprehensive performance, which is widely used in scientific research and industrial high-energy ray detection. Ce: The effective atomic number of the GAGG crystal is as high as 54.4, and the peak wavelength of the emission spectrum located at 520nm, which matches well with the sensitive wavelength range of the photomultiplier tube (PMT) and silicon photodiode (PD).

Ce: GAGG crystal exhibits stable physical and chemical properties, high thermal conductivity, and resistance to harsh environments. It exhibits excellent scintillating performance, for example, high scintillating efficiency, high light yield, and fast decay time. Ce: GAGG crystals are widely used in photomultiplier tubes, photoelectric counters, scintillation screens, and other devices. And used in high-energy particle detection and other fields, such as beta rays, gamma rays. Because of the excellent scintillation performance of Ce:YAG crystal, it is widely used in CT, scanning electron microscope SEM and other equipment. In particular, the linear response of GAGG crystals to gamma rays indicates that Ce: GAGG crystals are a promising medical imaging technology, such as X-ray photography, X-ray computed tomography (CT), and positron emission tomography (PET). ). Single crystal scintillators are often used in scanning electron microscopy (SEM).


Parameter

Material Features

Chemical formulaCe:Gd3Al2Ga3O12
Density (g/cm3)6.63
Melting point (℃)1850
Hardness (Mho)8
HygroscopicNo
CleavageNo
Solubility (g/100gH2O)N/A
Thermal expansion coeff (C-1)TBA*10-6

Scintillator Properties

Wavelength(Max. emission) (nm)520
Wavelength range (nm)475-800
Decay time (ns)90
Light yield (photons/keV)50
Refractive index1.9@540nm
Radiation length (cm)TBA
Optical transmission (um)TBA
Transmittance (%)TBA
Reflection loss/surface (%)TBA
Light output relative to Nal(Tl) (%)TBA
Energy resolution (%)≤6

Spertrum

Feature

  • High density
  • High light yield
  • Fast decay time
  • Chemically inert
  • High sensitivity
  • High energy resolution

Application

  • γ-ray detection
  • X-ray medical imaging
  • Nuclear physics
  • Nuclear radiation detection
  • PET

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] Yoshikawa, Akira, Grodzicka, et al . Characterization of GAGG:Ce scintillators with various Al-to-Ga ratio[J]. Nuclear Instruments & Methods in Physics Research, 2015.
[3]  Sibczynski P ,  Iwanowska J ,  Moszynski M , et al. Characterization of new GAGG:Ce scintillators with different Al-to-Ga ratio[J]. IEEE Nuclear Science Symposium conference record. Nuclear Science Symposium, 2013.

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