YAG:Ce

YAG:Ce
Yttrium aluminum garnet activated by cerium is a fast scintillator with excellent mechanical and chemical resistance. YAG:Ce scintillation detectors are preferred for electron microscopy, beta and X-ray counting, as well as for electron and X-ray imaging screens.

Key properties

  • Fast scintillator
  • Highly universal scintillator
  • High mechanical resistence
  • High chemical resistence

Technical parameters

 

 Physical properties
  YAG:Ce YAP:Ce LuAG:Ce CRY 18 LuAG:Pr LuAP:Ce BGO PWO CRY 19
Density 4.57 g/cm3  5.37 g/cm3  6.73 g/cm3  4.5 g/cm3  6.73 g/cm3  8.34 g/cm3  7.13 g/cm3  8.28 g/cm3  7.1 g/cm3
Hardness by Mohs 8.5  8.6  8.5  5.8  8.5  -  5  4  -
Index of refraction 1.82  1.95  1.84  1.79  1.84  -  2.15  2.17  1.81
Melting point 1970°C  1875°C  2020°C  1980°C  2043°C  1960 °C  1050 °C  1123 °C  2100°C
Thermal expansion 0.8-0.9 x 10-5/K  0.4-1.1 x 10-5/K  -  -  -  -  0.7 x 10-5/K  -  1.8-10.3 x 10-5/K
Crystal structure cubic  rhombic  cubic  monoclinic  cubic  -  cubic  tetragonal symetric  monoclinic
Hygroscopic NO  NO  NO  NO  NO  NO  NO  NO  NO
Scintillation properties
Wavelength of max. emission 550 nm  370 nm  535 nm  425 nm  310 nm  365 nm  480 nm  420 nm  420 nm
Decay constant 70 ns  25 ns  70 ns  45 ns  20 ns  18 ns  300 ns  5-15 ns  41 ns
Afterglow <0.005 % at 6 ms  <0.005 % at 6 ms  -  -  -  -  <0.005% at 6 ms  -  -
Radiation length for 511 keV 3.5 cm  2.7 cm  1.3 cm  2.74 cm  1.3 cm  -  1.1 cm  0.89 cm  2.1 cm
Photon yield at 300 K (27°C) 30 x 103 Ph/MeV  25 x 103 Ph/MeV  25 x 103 Ph/MeV  30 x 103 Ph/MeV  15-18 x 103 Ph/MeV  11 x 103 Ph/MeV  8-10 x 103 Ph/MeV  15-25 phe/MeV  24 x 103 Ph/MeV
Integrated light output compared to NaI:Tl 40 % NaI:Tl  70 % NaI:Tl  20 % NaI:Tl  80 % NaI:Tl  66 % NaI:Tl  -  15-20 % NaI:Tl  -  75 % NaI:Tl

 

 

Crytur.cz © 2024 CRYTUR spol.s.r.o. | Cookies
Webdesign by Minion Interactive