|Melting Point(K)||1323||Density (g/cm3)||7.13|
|Thermal Expansion Coefficient(C-1)||7 x 10-6||Cleavage Plane||None|
|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 common heavy oxide scintillator materials. 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-hygroscopicities, and mechanical and radiation stability. BGO Scintillators are stable under radiation doses of up to 103 rad.
Another important 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 the areas of high-energy physics, and for compact tomographical devices, and active protection from background radiations.
Hangzhou Shalom EO offers Pixelated BGO Scintillation Arrays with custom pixel element sizes and designs. Shalom EO's pixelated BGO scintillators are excellent for Positron Emission Tomography (PET), Computerized Tomographies (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 which are used to further enhance the resolution of Positron Emission Tomographiws (PET).