小角X射线散射的数据处理

20067()Jul.2006297JournalofChongqingUniversity(NaturalScienceEdition)Vol.29No.7:1000-582X(2006)07-0102-03X3(,402160):X(SAXS).,.X,,,.:X;;Guinier;Porod;:O434.1:AX(SAXS),1.0200nm.,X,.,X,[1].XX,X.X,,X,X[2],.().SAXS[3].,,.,,,.,.1,3:GuinierPorod.Guinier.,.Guinier,,.,.,.,,.,,.,,.,.,,.,.1.,x0,.Guinier,23.,GuinierGuinier.3:2006-03-28:(KJ061208):(1967-),,,,,.1Beamstop23335Guinier3Guinier2Guinier,,,,.,.,,[4-5],0,I.[6].2.11)Guinier0,Guinier.Guinier[7]:I(h)=Ien2e-h2R2G/3,(1)I,IeX,n,RG,.h=4sin,2,X..lnI(h)h2Guinier.h0,.2)PorodPorod[8],,,ln[h3I(h)]h2h,,ln[h3I(h)]=K,(2)KPorod,.I(h).,Porod.h,ln[h3I(h)]h2.,,ln[h3I(h)]h2,Porod,ln[h3I(h)]=K-2h2,(3).,,,ln[h3I(h)]h2Porod.ln[h3I(h)]=K+2h2.(4)Porod,Porodh.2.2,4.,5.,0,,301297:X,,.5,,..433()5333GuinierPorod3.2.1)Guinier,,,.2),,,,,,.,,.,.,Porod,Porod.:[1],.X[M].:,2003.[2]GLATTERO,KRATKYO.SmallAngleX2rayScatter2ing[M].NewYork:AcademicPress,1982.[3]LIZH,GONGYJ,WUD,etal.AnegativedeviationfromPorod’slawinSAXSoforgano2MSU2X[J].Micro2porousMesopocrousMater,2001,(46):75-80.[4],.[J].(),2005,28(12):87-91.[5]LEIXIAO2WEI.StudyofSemicrystallinePolymersbySmall2AngleX2rayScattering[J].JournalofSouthwestChinaNormalUniversity.(NaturalScienceEdition),2006,31(1):75-80.[6],.X-[J].A,1990,11:1224-1228.[7].X[M].:,1996.[8],,.X[J].,2000,(7):1312-1315.DataProcessingTechniquesofSmall2angleX2rayScatteringLEIXiao2wei(DepartmentofPhysicsandInformationEngineering,ChongqingUniversityofArtsandSciences,Chongqing402160,China)Abstract:Thesmall2angleX2rayscattering(SAXS)techniqueisoneofchieftoolstostudystructuresofmacromoleculesandmeso-structures.AsusersofsynchrotronradiationsmallangleX2rayscatteringexperimentalstationareincreasingrapidly,itisnecessarythatdataprocessingtechniquesareprovidedwiththem.Somedataprocessingtechniquesaredis2cussed.Itincludesthemethodtobecomegreaterdataamountoflowerangleregionandthedatamustbeextrapolatedtoholespecialforthedatafromexperiment,asampleisanalyzed.Keywords:small2angleX2rayscattering;dataprocessing;Guinier’slaw;Porod’slaw()401()2006