Determination of the IR refractive index and absorption coefficient of solid fuels

Reflection, emission, and polarization properties of surfaces made of hyperfine grains, and implications for the nature of primitive small bodies

“…To do so, optical indexes of olivine, anthracite and iron sulfide are needed. For the two first materials, we respectively used the indexes from Zeidler et al (2011) and Blokh and Burak (1972). For iron sulfide, as there is no optical indexes available in the Vis-NIR for either pyrrhotite or troilite, we decided to approximate it by the optical indexes of metallic iron, using the indexes from Querry (1985).…”