Interferometric measurements with hard X-rays using a double slit

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1、1May2001OpticsCommunications191@2001)91±96www.elsevier.com/locate/optcomInterferometricmeasurementswithhardX-raysusingadoubleslita,*baW.Leitenberger,S.M.Kuznetsov,A.SnigirevaEuropeanSynchrotronRadiationFacilityESRF),38043GrenobleCedex,FrancebInstituteofMicroelectronicsTechnologyRAS,

2、142432Chernogolovka,MoscowRegion,RussianFederationReceived3November2000;receivedinrevisedform6February2001;accepted6February2001AbstractWereportaboutinterferometricmeasurementswithX-raysof1.24Awavelengthusingastandardset-upofYoungÕsdouble-slitinterferometer.Wecouldexperimentallyprob

3、ethespatialcoherenceofX-raysbymeasurementofthefringevisibilityintheinterferencepattern.Theinterferometerwasadditionallyusedtodeterminetheindexofrefractionofathinsiliconplatebymeasuringthefringeshiftintheinterferencepattern.Theset-upallowedtoresolvepathlengthdierencesofatenthofthewave

4、length.Ó2001ElsevierScienceB.V.Allrightsreserved.Keywords:Interferometry;Coherence;HardX-rays;Diraction;Synchrotronradiation1.IntroductioncharacterizationmethodsforhardX-rayshastobeusedalsoinviewoffullyexploitationoftheInterferometrictechniquesareofgreatinterestpropertiesofradiationf

5、romfreeelectronlaser.InforthecharacterizationofcoherencepropertiesofthepresentpaperwereportabouttherealizationX-raybeams.ForvariousexperimentsmakinguseofaYoungdouble-slitexperimentforhardX-raysofthecoherencepropertiesoneneedsexactin-whichisindeedaveryclassicalapproach[1].Weformationa

6、bouttheincidentbeam.Fieldsofin-performedanumberofmeasurementsshowingtheterestarethedeterminationofthesourcesizeofpracticabilityofthiskindofexperimentatÔAngs-anX-raybeam,probingofthedegradationoftromwavelengthÕ.thebeamqualitybyinteractionwithbeamlineWiththeadventofhighlycollimatedsync

7、hro-componentsasvacuumwindows,monochromatortronradiationitshighspatialcoherencemadeitcrystalsormirrorsandthediagnosticsofinsertionpossibletoobserveFresnelandFraunhoferdif-devicesasundulatorsinastoragering.Suitablefractionpatterninsimpleexperiments.There-cordingofin-linehologramsofnea

8、rlytranspare