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  • BGO Scintillator Arrays
  • BGO Scintillator Arrays

BGO Scintillator Arrays

  • Non-hygroscopic and Mechanical ruggedness,
  • Good radiation hardness
  • High density and atomic number, nearly complete absence of afterglow
  • Minimum pixel or crystal element size: 0.3mm x 0.3mm
  • Main applications: High Energy Physics (HEP), Small-sized tomography devices, gamma-radiation monitoring, Security control, radiation isotope identification devices, non-destructive testing, well-logging
  • Could be assembled as Multilayer Scintillation Arrays 
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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 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). 

Multilayer Scintillation Arrays

Multilayer Scintillation Arrays

  • Based on BGO or LYSO(Ce)
  • Customized multilayer arrays up to 4~5 layers available
  • Applied to improve the resolution of PET (Positron Emission Tomographies)
  • Additional Light Guides could be integrated if required

Bismuth Germanate (BGO) Scintillator Crystals

Bismuth Germanate (BGO) Scintillator Crystals

  • Non-hydroscopic and Mechanical Ruggedness
  • High Density and High Radiation Hardness
  • Maximum Size: ɸ 75 mm x 300 mm
  • Both bulk crystals and BGO Scintillation Arrays are available
  • Main applications: Positron emission tomographies(PET), High Energy Physics, Nuclear Medicine, Geological Prospecting, and Gamma Pulse Spectroscopes