BaF2 – Barium Fluoride
In addition to its use as an UV-Vis-IR optical material, Barium Fluoride’s properties make it ideal for scintillation. BaF2 is utilized widely in high energy physics, nuclear physics and nuclear medical instrumentation.
A fast scintillator, Barium Fluoride’s luminescence intensity is independent of its temperature, with a faster emission from 180nm to 240nm and a slower emission at 310nm.
Excellent radiation hardness is exhibited up to 105 rad, making it useful in nuclear detection with high counting rates and high radiation.
| Transmission range (μm) | 0.15~12.5 |
| Transmittance | ＞90% (0.35~9μm，3mm) |
| Refractivity (2.58μm) | 1.4626 |
| Reflection Loss at 2.58μm | 6.8% (both faces) |
| Radiation length (cm) | 2.06 |
| Emission peak (nm) | 310 (slow); 220 (fast) |
| Decay constant (ns) | 620 (slow); 0.6 (fast) |
| Light output [NaI(TI)=100%] | 20% (slow); 4% (fast) |
| Knoop hardness (kg/mm2) | 82 with 500g indenter |
| Solubility at 23°C (g/100gH2O) | 0.17 |
| Cleavage plane | <111> |
| Density (g/cm³) | 4.89 |
| Melting point (°C) | 1280 |