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  • BGO Scintillators
  • BGO Scintillators

BGO Scintillators

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

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Basic Properties:

Density (g/cm3) 7.13 Melting Point (K) 1323
Thermal Expansion Coefficient (C-1 ) 7 x 10-6 Cleavage Plane none
Hardness (Mho) 5 Hygroscopic no
Wavelength of Emission Max. (nm) 480 Lower Wavelength Cutoff (nm) 320
Refractive Index @ Emission Max 2.15 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

 

Specifications:

Growth Method Bridgman Formula Bi4Ge3O12
Maximum Dimension ∅ 75 mm x 300 mm Available Items Single crystal and arrays

BGO crystal is one of the most widely used scintillation materials of the oxide type. It has a high Z, high density scintillation material. Due to the high atomic number of bismuth (83) and the material's high density of 7.13 g/cm3, BGO is a very efficient gamma ray absorber. Given the high Z value of the material, the photo fraction for gamma ray absorption is high, as a result very good peak-to-total ratios are observed. Due to these features, BGO crystals are used in high-energy physics (scintillators for electromagnetic calorimeters and detecting assemblies of accelerators), spectrometry and radiometry of gamma-radiation, positron tomography.

Applications:

  1. Growth method: Bridgmen
  2. Formula: Bi4Ge3O12
  3. Maximum dimension: φ 75 mm x 300 mm
  4. Available items: single crystals and arrays

Applications:

  • Positron emission tomography(PET)
  • High energy physics
  • Nuclear medicine
  • Geological prospecting
  • Gamma pulse spectroscopy