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BGO Scintillator

Advantage：

1.High density

2.High detection efficiency

3.Low afterglow

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BGO (Bi₄Ge₃0₁₂) is an oxide type scintillation material. It has high atomic number and density. BGO has good property including strong mechanical strength, non-hygroscopic, no cleavage. Extreme high density 7.13 g /cm3 which makes these crystals very suitable for the detection of natural radioactivity.
BGO detectors are characterized by high energy resolution in the energy range 5 - 20 MeV, a relatively short decay time. Its parameters remain stable up to the doses of 5 x 10⁴ Gy. Due to these features, BGO crystals are used in high-energy physics, spectrometry and radiometry of gamma-radiation, positron tomography nuclear medical imaging industry.

Properties:

Density（g/cm³）	7.13
Melting Point (K)	1323
Thermal Expansion Coefficient (C^-1)	7 x 10^-6
Cleavage Plane	None
Hardness (Mho)	5
Hygroscopic	No
Wavelength of Emission Max. (nm)	480
Lower Wavelength Cutoff (nm)	320
Refractive Index @ Emission Max	2.15
Primary Decay Time (ns)	300
Light Yield (photons/keV)	8-10
Photoelectron Yield [% of NaI(Tl)] (for γ-rays)	15 - 20
Temperature Response	-1.2%/C
Neutron Capture Cross-Section	1.47b
Afterglow @ 20ms	150ppm

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