P51E-05
The SuperCam Remote-Sensing Instrument Suite for the Mars 2020 Rover Mission
Friday, 18 December 2015: 09:00
2009 (Moscone West)
Roger C Wiens1, Sylvestre Maurice2, Samuel M Clegg1, Fernando Rull3, Shiv K Sharma4, Ryan B Anderson5, Olivier Beyssac6, Lydie Bonal7, Lauren P DeFlores8, Gilles Dromart9, Woodward W Fischer10, Olivier Forni2, Olivier Gasnault11, John P Grotzinger12, Jeffrey Roy Johnson13, Jesus Martinez-Frias3, Nicolas Mangold14, Scott M McLennan15, Franck Montmessin16 and SuperCam team, (1)Los Alamos National Laboratory, Los Alamos, NM, United States, (2)IRAP, Toulouse, France, (3)Center of Astrobiology, Unidad Asociada UVa-CSIC-CAB, Valladolid, Spain, (4)Univ Hawaii, Honolulu, HI, United States, (5)USGS Astrogeology Science Center, Flagstaff, AZ, United States, (6)IMPMC Institut de Minéralogie et de Physique des Milieux Condensés, paris, France, (7)UJF-Grenoble 1 / CNRS-INSU, Institut de Planétologie et d’Astrophysique de Grenoble (IPAG), Grenoble, France, (8)Jet Propulsion Laboratory, Pasadena, CA, United States, (9)Ecole Normale Supérieure Lyon, Lyon, France, (10)Caltech, Pasadena, CA, United States, (11)Universite de Toulouse, Toulouse Cedex 4, France, (12)California Institute of Technology, Pasadena, CA, United States, (13)Johns Hopkins University, Baltimore, MD, United States, (14)LPGN Laboratoire de Planétologie et Géodynamique de Nantes, Nantes Cedex 03, France, (15)Stony Brook University, Stony Brook, NY, United States, (16)LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales, Paris Cedex 05, France
Abstract:
The SuperCam remote-sensing instrument suite in development for the Mars 2020 rover represents a significant advance from its precursor, ChemCam, by adding Raman spectroscopy (to 12 m distance) and visible and near-infrared (VISIR) reflectance spectroscopy. For Raman spectroscopy the LIBS Nd:YAG laser is frequency-doubled to 532 nm (green Raman). A transmission spectrometer with an intensified CCD covers 150-4400 cm-1 spectral range at a resolution of 10 cm-1. The system is adjustably time-gated, removing much of the mineral fluorescence from the Raman spectra and also facilitating time-resolved fluorescence studies. The infrared range covers 1.3-2.6 microns in addition to the existing 400-840 nm range on ChemCam. Additional upgrades include doubling the LIBS resolution in the 535-860 nm range and adding color to the Remote Micro-Imager (RMI), which is the highest resolution remote imager on the rover. A large-scale effort is being applied to the on-board standards, being led by U. Valladolid in Spain, with targets contributed by many institutions. The number of geological targets will be increased from 8 (on ChemCam) to 22, planned to include end-member plagioclase feldspars, hi- and low-Ca pyroxene, olivines, several fine-grained basalts, hematite, jarosite, carbonates, apatite, and several synthetic targets doped with trace elements. Three Spectralon targets are planned for IR calibration and several color bands for the RMI. All but the Spectralon and color bands should be available for LIBS calibration, and many are also being designed for Raman and VISIR calibration. For LIBS this collection of standards will significantly improve the accuracy relative to ChemCam; other precision improvements are anticipated to come from correcting for variable plasma temperature. The presentation will illustrate how Mars datasets will be significantly improved via this multi-technique approach and will give a first look at prototype SuperCam spectra.
