Lunar and Planetary Science XLVIII (2017) 2600.pdf THE SUPERCAM REMOTE RAMAN SPECTROMETER FOR MARS 2020 R.C. Wiens1, R. Newell1, S. Clegg1, S.K. Sharma2, A. Misra2, P. Bernardi3, S. Maurice4, K. McCabe1, P. Cais5, and the SuperCam Science Team (1LANL, Los Alamos, NM;
[email protected], 2U. Hawaii; 3LESIA; 4IRAP; 5LAB) Overview: The Mars 2020 Science Definition length calibration as well as to have reasonable Team developed criteria for advanced instrumen- resolution; b) to identify a mineral by resolving tation for the next NASA rover. One important two of its closely-spaced peaks. Examples of this criterion is to provide mineral compositions at are olivine or albite whose twin peaks are gener- remote distances [1]. Hence, the SuperCam in- ally characteristic of their spectra; and c) to iden- strument that was selected provides two remote tify the presence of two or more minerals in the mineralogy techniques: passive visible and infra- same spectrum by resolving their respective red (VISIR) reflectance spectroscopy and remote peaks. An example is quartz and albite, which Raman spectroscopy. These are in addition to often occur together. A FWHM of 12 cm-1 vali- providing co-bore-sighted remote elemental com- dated on a naturally narrow emission line meets positions, color images, and acoustic spectra all of the above needs. There are other ways of (sounds) [2]. SuperCam’s remote Raman spec- specifying resolution, such as the pixel spread or troscopy complements the rover’s in-situ Raman the theoretical resolution of a system. For exam- experiment, SHERLOC (see below; [3]), and ple, the 12 cm-1 FWHM criterion is better than RLS on ExoMars, as the first Raman spectrome- examples labeled in [4] as “4 cm-1”, the highest ters to be built for another planet.