Bi4Ge3O12 (Bismuth Germanate or BGO)

Crystals >>> Scintillating Crystal >>>  Bi12GeO20 or Bi3Ge4O12 

Bismuth germanate(BGO for short), is a multifunctional crystal. As a scintillator, it has such advantages as high radiation hardness, high scintillation efficiency, good energy resolution and no hygroscopic, and used in particle physics, nuclear physics, aerospace physics, nuclear medicine, geology exploring and other industries. At present, BGO crystal is used widely in nuclear medical imaging, for instance, in PET.

Red Optronics can supply BGO, either Bi12GeO20 or Bi3Ge4O12 ,up to 3040250 mm3 (cuboids) or φ50100mm3 (cylinder).
 
Physical and Chemical Properties

Space group

 

Density (g/cm3)

7.13

Hardness (mho)

5

Thermal expansion coefficient

7.0

Radiation length (cm)

1.12

Molere radius (cm)

2.7

Decay constant (ns)

300

Peak emission (nm)

480

Light output relative to NaI(Tl) (%)

15~20

Lower wavelength cutoff (nm)

320

Refraction index at emission maximum

2.15

After glow (after 3ms) (%)

< 0.005

Temperature response (K-1)

0.01

Melting point (C)

1050

Hygroscopic

No


  

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