BaF2 Scintillator (BaF2 Scintillation Crystal)
Barium fluoride (BaF2) scintillation crystal is known for its fast and slow emission components. It offers sub-nanosecond timing resolution, making it ideal for time-of-flight positron emission tomography (TOF-PET) and high-energy physics experiments. BaF2 has high density and effective atomic number, providing good gamma-ray detection efficiency. Although it is slightly hygroscopic, its excellent timing properties and radiation hardness make it a valuable material in nuclear medicine and particle physics. Its fast component decay time is about 0.6 ns, enabling ultra-fast timing.
OST Photonics provides high-quality BaF₂ crystals with customizable dimensions, orientations, and surface finishes to meet your precise optical and scintillation needs.
Application
Positron Emission Tomography (PET)
High-energy and nuclear physics experiments
Time-of-flight (TOF) measurements
Gamma-ray astronomy and physical exploration
Positron annihilation spectroscopy
Features
Ultrafast decay time
Dual emission components
High density and effective atomic number
Excellent radiation hardness
Broad optical transparency
Production and Supply Capability
Maximum Size: ɸ120mm x 200mm
Available items: monolithic crystal
Properties
Density (g/cm3) | 4.88 |
Melting Point (K) | 16.27 |
Thermal Expansion Coefficient (C-1) | 18.4 x 10-6 |
Cleavage Plane | <111> |
Hardness (Mhos) | 3 |
Hygroscopic | Slightly |
Wavelength of Emission Max. (nm) | 310 / 220(195) |
Lower Wavelength Cutoff (nm) | 135 |
Refractive Index @ Emission Max. | 150(310nm) 1.54(220nm) |
Primary Decay Time (ns) | 630 (slow) / 0.6-0.8 (fast) |
Light Yield (photons/KeV) | 10 (slow) / 1.8 (fast) |
Photoelectron Yield (% of NaI(Tl)) (for γ-rays) | 16 (slow) / 3 (fast) |