SPI Supplies® YAG/YAP Comparison Table

Compare the properties of these two outstanding scintillator materials

YAGYAP
Physical Properties:
Density (g/cm3)4.575.37
Hardness (Mho) 8.58.6
Index of refraction 1.821.95
Crystal structure CubicRhombic
Melting point, °C 19701875
Hygroscopic No No
Linear coefficient of thermal expansion, 10-5/K 0.8-0.90.4-1.1
Cleavage NoNo
Chemical formula Y3Al5O12YAlO3



Luminescence properties:
Integrated light output (%NaI: Ti) 15 40
Wavelength of maximum emission (nm) 550 370
Decay constant, ns 70 25
After glow (% at 6 ms) <0.005 <0.005
Radiation length (cm) 3.5 2.7
Photon yield at 300 °K (103 Ph/MeV) 8 10


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Sunday March 21, 2010
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