透射镜片材料 — Lithium Fluoride (LiF)氟化锂
| Transmission Range | 0.116-7.4 (Dicke 2mm) |
| Refractive Index | 1.39126 @633 nm |
| Reflection Loss | 2.65% @0.633 µm |
| Residual Beam Wavelength | 26 µm (max. reflection) |
| Density | 2.63905 g/cm3 |
| Melting point | 848°C |
| Molecular Weight | 25.94 |
| Thermal Conductivity | 11.3 W/(m·K) @314 K |
| Spec. Heat Capacity | 1562 J/(kg·K) |
| Thermal Expansion | 37 · 10-6/ K @273…373K |
| Hardness (Mohs) | 102 |
| Young’s Modulus | 64.79 GPa |
| Shear Modulus | 55.14 GPa |
| Bulk Modulus | 62.03 GPa |
| Fracture Modulus | 10.9 MPa |
| Elastic Coefficient | C11 = 112; C12 = 45.6; C44 = 63.2 GPa |
| Dielectric Constant | 9.0 @298K, f = 100 Hz…10 GHz |
| Solubility in Water | 0.27g / 100g @18°C |
| Crystal Structure | Single crystal, synthetic |
| Crystal Type | Cubic, NaCl type structure, a= 4.02 Å |
| Cleavage Planes | (100) |
| Poisson Ratio | 0.22 |
| Application | X-ray monochromator plates; Optical material for VUV applications |
