Fig. 8
Absorption Qabs (red solid line) and scattering Qsca (blue dashed line) efficiencies of Mg2SiO4 as functions of grain radius at λ = 9.8 μm. Data for the refractive index are taken from Jäger et al. (2003). The efficiencies are calculated using the Mie theory for spherical particles (program BHMIE from Bohren & Huffman (1983) and modified by Draine, www.astro.princeton.edu/draine/scattering.html).
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