Negative polarization properties of regolith simulants - Systematic experimental evaluation of composition effects

This dataset refers to the paper "Negative polarization properties of regolith simulants - Systematic experimental evaluation of composition effects" DOI: https://doi.org/10.1051/0004-6361/202243844 Different dust mixtures were created to simulate the mineralogical complexity of asteroids using different mineral endmembers: silica, magnetite, forsterite, spinel, graphite, fayalite. Binary mixtures and ternary mixtures were created using the end-members, and this dataset collects all their polarimetric curves. Furthermore, aggregate of less than 0.2mm and more than 2mm (only for silica-graphite mixtures) have been created and measured. Each .txt file shows the data of a polarimetric curve. The columns correspond respectively to: #phase_angles[°] #Q/I #U/I #V/I #DOLP #DC #delta_Q/I #delta_U/I #delta_V/I #delta_DOLP #delta_dc "delta" refers to the error associated with the measurement, obtained by the repetition of the measurement for different azimuthal angles of the sample (see paper for more detailed description). The SEM images are the one corresponding to Fig. 2 and 3 of the paper.