Barium Fluoride – BaF2

lenses, windows, mirrors, filters and prisms

Used for optical windows, prisms and lenses transmitting from the vacuum ultraviolet into the Infrared. Barium Fluoride (BaF²) is also a scintillation material that exhibits one of the fastest known decay constants among inorganic materials.

Typical Applications: UV, Visible and Infrared imaging systems, scintillators, IR cut-off filters.

Transmission Range 0.15 – 12.5 microns
Crystal Structure Fluorite
Cleavage Plane 111
Colour Colourless
Density 4.884 (20°)
Melting Point (°) 1280
Reflection Loss 6.0% (4µ) for 2 surfaces
Solubility index 0.17gm/100gm water at 23 °C
Hardness (Knoop) 82.0/500 gm indenter
Thermal Conductivity (cal/cm sec°C) 11.72 Wm-1°K-1 at 13 °C
Thermal Expansion coefficient (/°C) 18.1x10-6/°C at -100° to +120°C

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