|Density (g/cm3)||7.13||Melting Point (K)||1323|
|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 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|
Abilities and Specifications:
|Maximum Dimension||∅ 75 mm x 300 mm||Available Items||Single crystal and arrays|
Bismuth Germanate or BGO crystal is one of the most widely used scintillation materials of the oxide type. BGO 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.
Hangzhou Shalom EO offers the custom BGO crystals and BGO arrays products, they are widely used in high-energy physics (scintillators for electromagnetic calorimeters and detecting assemblies of accelerators), spectrometry and radiometry of gamma-radiation, positron tomography.