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ExoMars Raman laser spectrometer for Exomars

2011; SPIE; Volume: 8152; Linguagem: Inglês

10.1117/12.896787

1996-756X

F. Rull, A. Sansano, Eva Díaz, Carlos Pérez, Andoni Moral, C. Tato, M. Colombo, T. Belenguer, Manuel Fernández, J. A. Rodríguez‐Manfredi, R. Canchal, B. Dávila, A. Jiménez, P. Gallego, S. Ibarmia, J. A. R. Prieto, Amaia Santiago, J. Plá, G. Ramos, Carlos Díaz, C. González,

Planetary Science and Exploration

The Raman Laser Spectrometer (RLS) is one of the Pasteur Payload instruments, within the ESA's Aurora Exploration Programme, ExoMars mission. ExoMars 2018 main Scientific objective is "Searching for evidence of past and present life on Mars". Raman Spectroscopy is used to analyze the vibrational modes of a substance either in the solid, liquid or gas state. It relies on the inelastic scattering (Raman Scattering) of monochromatic light produced by atoms and molecules. The radiation-matter interaction results in the energy of the exciting photons to be shifted up or down. The shift in energy appears as a spectral distribution and therefore provides an unique fingerprint by which the substances can be identified and structurally analyzed. The RLS is being developed by an European Consortium composed by Spanish, French, German and UK partners. It will perform Raman spectroscopy on crushed powdered samples inside the Rover's Analytical Laboratory Drawer. Instrument performances are being evaluated by means of simulation tools and development of an instrument prototype.