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Lead Fluoride (PbF2)
Lead Fluoride has little optical application. Lead Fluoride has been used as a scintillator material as it has excellent stopping power for gamma rays. The data is for information only. We cannot supply this material.
| Transmission Range | 250nm to 11 μm |
| Refractive Index | 1.7808 at 11 μm |
| Reflection Loss | 12.8% at 5 μm (2 surfaces) |
| Absorption Coefficient | 0.018 cm-1 @ 4μm |
| Reststrahlen Peak | n/a |
| dn/dT | n/a |
| dn/dμ = 0 | 3.3 μm |
| Density | 7.77 g/cc (1) |
| Melting Point | 855 °C |
| Thermal Conductivity | n/a |
| Thermal Expansion | 29 x 10-6 K-1 at 283K |
| Hardness | Knoop 200 |
| Specific Heat Capacity | 301 J Kg-1 K-1 |
| Dielectric Constant | 13 at 1 MHz |
| Youngs Modulus (E) | n/a |
| Shear Modulus (G) | n/a |
| Bulk Modulus (K) | n/a |
| Elastic Coefficients | C11=91; C12=46; C44=23 |
| Apparent Elastic Limit | n/a |
| Poisson Ratio | N/A |
| Solubility | 0.064g/100ml water at 20°C |
| Molecular Weight | 245.21 |
| Class/Structure | Cubic CaF2, Fm3m, (111) cleavage |
| μm | No |
|---|---|
| 0.3 | 1.93665 |
| 0.4 | 1.81804 |
| 0.5 | 1.78220 |
| 0.6 | 1.76489 |
| 0.7 | 1.75502 |
| 0.8 | 1.74897 |
| 0.9 | 1.74455 |
| 1.0 | 1.74150 |
| 3.0 | 1.72363 |
| 5.0 | 1.68544 |
| 7.0 | 1.68544 |
| 9.0 | 1.65504 |
Lead fluoride has been grown by vacuum Stockbarger, but is not known to be in regular production. Crystran hold a very small stock of crystal ingot.
REFERENCES
(1) Crystran Data