Active Member
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[China]
Address: No.200, Zgaoxian Road, Jiading Zone, Shanghai, China
Contact name:sales
Nanjing Crylink Photonics Co.,Ltd |
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Description
Bismuth germanate (Bi4Ge3O12,BGO) is intrinsic scintillation
material with high absorption power. Due to its high effective
atomic number and high density, BGO is a very efficient gamma
absorber with high photo effect fraction which results in a very
good photo peak to Compton ratio. It is the most common oxide-based
scintillator.
BGO is used in detectors in particle physics, aerospace physics,
nuclear medicine, geology exploration, and other industries. BGO
arrays are used for gamma pulse spectroscopy. BGO crystals are also
used in positron emission tomography detectors. BGO detectors are
preferred for medium and high-energy gamma counting and high-energy
physics applications.
Features:
Dense and high absorption coefficient for gamma-ray.
High light output and short decay time, colorless and clear
Excellent energy resolution and uniform light output.
Small decrease in light output at 100°C
Almost no degradation in scintillation properties at 10*6 gray.
Specification
Parameters of materials | |
Materials | BGO |
Radiation length/cm | 1.12 |
Hardness | 5 |
Decay time/ns | 300 |
Peak emission /nm | 480 |
Refractive Index | 2.2 |
Density g/cm3 | 7.13 |
Polishing Specification for Optical Grade | |||
Standard Precision | High Precision | Super Precision | |
Orientation Tolerence | ＜ 1° | ＜ 0.5° | ＜ 0.2° |
Thickness/Diameter Tolerance | ±0.10 mm | ±0.05 mm | ±0.02 mm |
Surface Flatness@633nm | ＜-2 | ＜/2-/4 | /4-/6 |
Wavefront Distortion | ＜(2-4) | ＜(1-2) | ＜(-/2) |
Surface Quality | 60/40 | 40/20 | 20/10 |
Parallel | 45 | 1 | 10 |
Perpendicular | 60 | 30 | 20 |
Clear Aperture | ＞90% | ||
Chammfer | ＜0.2mm×45° | ||
Coating | Available uponrequest | ||
