PbF2 Scintillation Crystals
Lead Fluoride - PbF₂ is a highly effective gamma-ray absorber as a result of its high density and high Z. It is also very fast with a very short Radiation Length and Moliere Radius.

PbF2 scintillator crystal strengths:
  • High stopping power: High Density - 7.77 g/cm³, Radiation Length - 0.93 cm, Moliere Radius -2.2 cm
  • Fast: Decay Times - 6 and 30 ns
  • Radiation Hard: No damage up to 10⁵ Gy

PbF2 scintillator crystals have the following issues which should be noted:
  • Relatively low light output
  • Are intrinsically radioactive making it unacceptable for some applications
  • Are susceptible to radiation damage, starting with doses between 1 and 10 Gray (10² - 10³ rad). Reversible with time or annealing.

Lead Fluoride - PbF2 - scintillator crystals are useful in diverse applications such as:
  • Positron Emission Tomography (PET)
  • Specialist applications in high energy, nuclear, space and medical physics
PbF2 Scintillation Crystals
- Properties -
PbF2 Scintillator Emission Spectrum
PbF2 Mass Attenuation Coefficients
PbF2 Scintillation Crystals
- Optical Properties -
Property Units Value
Wavelength (Max. Emission) nm TBA
Wavelength Range nm TBA
Decay Times ns TBA
Light Yield photons/keV TBA
Photoelectron Yield % of NaI(Tl) 1
Radiation Length cm 0.93
Optical Transmission µm TBA
Transmittance % TBA
Refractive Index 1.82
Reflection Loss/Surface % TBA
Neutron Capture Cross-section barns TBA
PbF2 Scintillation Crystals
- Mechanical Properties -
Property Units Value
Chemical Formula PbF₂
Density g/cm³ 7.77
Atomic Number (Effective) TBA
Melting Point ºC 882
Thermal Expansion Coeff. C⁻¹ 29.0 x 10‾⁶
Crystal Structure Tetra
Hardness Mho 4
Hygroscopic No
Solubility g/100gH₂0 0.064
PbF2 Scintillation Crystals
- Further Reading/Publications -
PbF2 Scintillation Crystals
- Sizes -
Diameters:
TBA max.
Lengths:
TBA max.