Basic Properties:
| Melting Point(K) | 1323 | Density (g/cm3) | 7.13 |
| Thermal Expansion Coefficient(C-1) | 7 x 10-6 | Cleavage Plane | None |
| Hardness(Mohs) | 5 | Hygroscopic | No |
| Wavelength of Emission Max.(nm) | 480 | Lower Wavelength Cutoff(nm) | 320 |
| Refractive Index @ Emission Peak | 2.15 | Emission Peak Wavelength(nm) | 550 |
| Lower Wavelength Cutoff(nm) | 330 | Primary Decay Time(ns) | 300 |
| Light Yield((photons/keVγ) | 8-10 | Photoelectron Yield [% of NaI(Tl)] (for γ-rays) | 15-20 |
| Temperature Response | -1.2%/℃ | Neutron Capture Cross-section | 1.47b |
| Afterglow @ 20ms | 150ppm | ||
Bismuth germanate Bi4Ge3O12 (BGO) is one of the most widely used heavy oxide scintillator materials. BGO has a high atomic number (83) of the heavy component Bismuth element and a high density of the material (7.13 g/cm3). The luminescence spectrum of BGO scintillators has a maximum in the visible spectral range at 480 nm. Among advantages of BGO crystals, one should note their non-hygroscopicity, mechanical and radiation stability. BGO scintillators are stable under radiation doses of up to 103 rad.
Another important advantage of BGO crystals is a nearly complete absence of afterglow. The decay time of the main scintillation component of BGO at room temperature is 300 ns. All above advantages of BGO crystal makes it successfully used in experiments of high-energy physics, small-sized tomography devices and an active protection from background activity.
Hangzhou Shalom EO offers the BGO arrays with customzied pixels and pixels element size and design, BGO arrays are used to make the multi-layer scintillation arrays which is used to improve resolution of Positron Emission Tomography (PET). Our BGO arrays are used in the Positron Emission Tomography (PET), Computerized Tomography (CT), industrial Non-Destruction Testing (NDT) and other research applications.
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