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GranadosRamanSpectroscopyJoeA.GranadosSummerBridgeProgramJuly17,2003RamanSpectroscopyIntroduction:Rubies!Emeralds!Diamonds!TablesupontablesofthesepreciousstonesarecollectedfromallovertheworldattheGemandMineralShow.Crowdsofpeoplegathertobuy,sell,andtradetheirlittlerarities.Whatifamidstalloftheseitemswereafeweyecatchinggemsthatcouldonlybefoundonanotherplanet?HowmuchwouldpeoplepaytohavearingwithaMartianmineralimbeddedonitssurface?Intheyear2008anotherroverisgoingtomakeasixtoeightmonthtriptoMars.Onboardtherover,willbeaprobeattachedtoadevicethatcanidentifymineralswithmoreefficiencythananyotherMarsboundinstrument.ThisdeviceiscalledaRamanSpectrometer.ItisgovernedbythetheoryofRamanscatteringwhichwasdiscoveredin1928(Skoog).Now,withtheadventofmoderntechnologies,Ramanspectroscopyisavaluabletoolforanalyzingmolecules.Objective:Beforethisupcomingrovermissioncanbegin,aRamaninstrumentspecifictotheMarsboundmachineneedstobeconstructedaswellasadatabaseandaprogramforoperatingtheinstrumentandinterfacingwiththedatabase.Thepurposeofthisprojectwastoassistinthecreationofthemineralportionofthedatabase.Forthis,abasicunderstandingofRamanspectroscopywasrequiredinordertouseaRamanspectrometerinalabsettingforthepurposeofcollectingdataforthedatabase.Knowledgeoftheinstrument’sdevicesandtheprogramthatlinkstheoperatortotheinstrumentisalsovitalincreatingalibraryofRamanspectra.Theory:RamanspectroscopyisthecreationandinvestigationofRamanscatteringforthepurposeofidentifyingmolecules(C.&G.).Ramanscatteringiscreatedbyirradiatingasamplewithalightsourceatonespecificwavelengthorcolor.Today,thismonochromaticlightsourceisusuallyintheformofalaser.Inorderforthistowork,thelaserhastobeatawavelengthsoasnottobeabsorbedbythemolecule(Skoog).Absorptionoccurswhenthesourcehasenoughenergytobringthemoleculeintoanexitedelectronicstate.Theresultingobservedlightradiatingfromthesamplewillbeintheformofluminescence.Thiscanbeflorescencewhichisradiationemittedasthemolec
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