Fig. 7From: Design of a Mars atmosphere simulation chamber and testing a Raman Laser Spectrometer (RLS) under conditions pertinent to Mars rover missionsRLS Raman spectra of calcite in the range 200 – 1200 cm−1, obtained under different conditions. Peaks in the Raman spectra under vacuum condition at 253 K and also those obtained under 8 mbar CO2, are within ~ 0.5 cm−1 of the spectra acquired under vacuum condition at 283 KBack to article page