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BGO Arrays

Features:
  • No hygroscopic
  • Mechanical ruggedness
  • High density and atomic number
  • Good radiation hardness

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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 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.



Application Notes:

  1. Environment monitoring – gamma-radiation monitoring
  2. Nuclear medicine –  Positron Emission Tomography (PET)
  3. Security control – radiation isotope identification devices
  4. Geophysics – well-logging
  5. Industrial – health physics, neutron activation analysis, non-destructive testing (defectoscopy)
  6. High Energy Physics (HEP) and Astrophysics – eletromagnetic calorimeter and spectrometers
LYSO(Ce) Arrays

LYSO(Ce) Arrays

Features:
  • Three to four times the light emission of BGO
  • High density
  • Short decay time
  • Fast, single exponential decay time most PMTs

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Multilayer Scintillation Arrays

Multilayer Scintillation Arrays


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BGO Scintillators

BGO Scintillators

Features:
  • No hygroscopic
  • Mechanical ruggedness
  • High density and atomic number
  • Good radiation hardness

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