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A mid-infrared study of synthetic glass and crystal mixtures analog to the geochemical terranes on mercury

Helbert, Joern; Hiesinger, Harald; Weber, Iris +8 more

The MERTIS (MErcury Radiometer and Thermal Infrared Spectrometer) onboard of the BepiColombo ESA/JAXA mission to Mercury will map the surface of Mercury in the wavelength range of 7-14 µm and for the interpretation of these spectra a database of analog materials is needed. We analyzed bulk grain size fractions of a series of analog materials…

Mid-IR spectral properties of different surfaces of silicate mixtures before and after excimer laser irradiation

Hiesinger, Harald; Helbert, Jörn; Weber, Iris +6 more

The behaviour of the Christiansen feature (CF) and the Reststrahlen bands (RBs) in mid-infrared (IR) reflectance spectra on various silicate mixtures as pressed pellets and powders was investigated in high-vacuum. In addition, the influence of micrometeorite bombardment simulated with an excimer laser was studied. The mixtures cover a wide range o…