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1、JOURNALOFGEOPHYSICALRESEARCH,VOL.108,NO.E1,5005,doi:10.1029/2002JE001902,2003DevelopmentoftheMarsmicrobeamRamanspectrometer(MMRS)1124AlianWang,LarryA.Haskin,ArthurL.Lane,ThomasJ.Wdowiak,5332StevenW.Squyres,RobertJ.Wilson,LarryE.Hovland,KenS.Manatt,36NasratRaouf,andChristopherD.SmithReceived6March2
2、002;revised18June2002;accepted3July2002;published30January2003.[1]Ramanspectroscopyisapowerfultoolformineralcharacterizationandfordetectionofwaterandorganicandinorganicformsofcarbon.TheMarsmicrobeamRamanspectrometer(MMRS)isdesignedforclose-upanalysisofrocksandsoilsinplanetarysurfaceexploration.The
3、MMRSconsistsofaprobe(inaflightunittobedeployedbyaroboticarm)andaspectrograph,lasersource,andelectronics(inaflightunittoresideonaroverorlander).TheRamanprobehasascanningopticalbenchthatenablesa1-cmlineartraverseacrossatargetrockorsoil,bothontargetmaterialsasencounteredandonfreshsurfacesofrocksexpos
4、edbyabrasionorcoring.Fromthesespectra,onecanidentifymajor,minor,andtraceminerals,obtaintheirapproximaterelativeproportions,anddeterminechemicalfeatures(e.g.,Mg/Feratio)androcktexturalfeatures(e.g.,mineralclusters,amygdularfill,andveins).Onecanalsodetectandidentifyorganicspecies,graphiticcarbon,and
5、water-bearingphases.ExtensiveperformancetestshavebeendoneonabrassboardmodeloftheMMRSusingavarietyofgeologicalmaterials(minerals,rocks,Martianmeteorites,etc.).ThesetestsshowthataRamanspectrometercanbebuiltthatissuitablyminiaturized,sufficientlyrobust,andlowenoughinpowerusagetoserveasanon-surfacepla
6、netaryinstrument,yetthespectrometercanretainhighdetectionsensitivityandyieldnearlaboratoryqualityspectraoverabroadwavelengthrange.Thesefeaturesareessentialtoprovidedefinitivemineralogyinaplanetaryexploration.INDEXTERMS:3672MineralogyandPetrology:Planetarymineralogyandpetrology(5410);3694Mineralogy
7、andPetrology:Instrumentsandtechniques;3994MineralPhysics:Instrumentsandtechniques;5494Planetology:SolidSurfacePlanets:Instrumentsandtechniques;KEYWORDS:Ramanspectroscopy,Marsin-situmineralogy,Planetaryon-surfacem
