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 a common heavy oxide scintillator material. BGO has a high atomic number of 83 and a high mass (7.13 g/cm3). The luminescence spectrum of BGO scintillators has a maximum in the visible spectral range at 480 nm. Among the advantages of BGO, one should note their non-hygroscopicity and mechanical and radiation stability. BGO Scintillators are stable under radiation doses of up to 103 rad.
Another essential benefit 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 the above advantages of BGO crystal make it an attractive candidate in high-energy physics and for compact tomographic devices and active protection from background radiation.
Shanghai North Optics offers Pixelated BGO Scintillation Arrays with custom pixel element sizes and designs. North Optics's pixelated BGO scintillators are excellent for Positron Emission Tomography (PET), Computerized Tomography (CT), industrial Non-Destruction Testing (NDT), and other research applications. Our single-layer BGO array series could also be integrated into multi-layer scintillation arrays, further enhancing the resolution of Positron Emission tomography (PET).
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