Abstract
The LNE has developed a technique to measure infrared radiative properties of volatile liquids. LNE uses a homemade reflectometer for the measurement of the spectral directional hemispherical reflectance from 0.8 μm to 14 μm and a Fourier transform spectrometer for the measurement of the regular spectral transmittance from 1 μm to 25 μm. For volatile liquids, a tight cell with two infrared windows was constructed. Optical models were developed to calculate the spectral complex refractive index of the liquid from reflectance and transmittance results. Results were validated for water by comparison to data found in literature.
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