简介：Thispaperevaluatestheutilizationoffreeradicalchemiluminescenceimagingandtomographicreconstructiontechniquestoassessadvancedinformationonreactingflows.Twodifferentlaboratoryflowconfigurationswereanalyzed,includingunvonfinednon-premizedjetflamemeasurementstoevaluateflamefuel/airmixingpatternsattheburner-portofatypicalglass-furnaceburner.Thesecondcasecharacterizedthereactionzoneofpremixedflameswithingasturbinecombustionchambers,basedonalaboratoryscalemodelofaleanprevaporizedpremixed(LPP)combustionchamber.Theanalysisshowsthatadvancedimagingdiagnosiscanprovidenewinformationonthecharacterizationofflamemixingandreactingphenomena.TheutilizationoflocalC2andCHchemiluminescencecanassessusefulinformationonthequalityofthecombustionprocess,whichcanbeusedtoimprovethedesignofpracticalcombustors.

简介：Theforwarddegeneratefour-wavemixinggeometrywasemployedtoinducemicrostructureinanorganicfreefradicalazobenzenepolymerfilm.BeforeirradiatedwithAr^+laserbeams(λ=514.5nm),theazobenzeneorganicfreeradicalpolymerexhibitsmagneticisotropicmeasuredbysuperconductingquantuminterferencedevice,Afterphoto-inducedmicrostructure,thepolymerfilmbecomesmagneticanisotropy,WhentheappliedmagneticfieldH+50Gauss,themanetizationalongthenormaldirectionofthePolymerfilmisMz=5.5×10^-5emu/g,whichislargerthanMx=4.1×10^-5emu/ginthedirectionparalleltothepolymerfilm.

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简介：ThispaperconstructstheinteractionpotentialoftheSH(X2Π)radicalbyusingthecoupled-clustersinglesdoubles-approximate-triplestheorycombiningthecorrelation-consistentquintuplebasissetaugmentedwiththediffusefunctions,aug-cc-pV5Z,inthevalencerange.Employingthepotential,itaccuratelydeterminesthespectroscopicparameters.ThepresentDe,Re,ωe,ωeχe,αeandBevaluesareof3.7767eV,0.13424nm,2699.846cm?1,47.7055cm-1,0.2639cm-1and9.4414cm-1,respectively,whichareinexcellentagreementwiththoseobtainedfromthemeasurements.Atotalof19vibrationalstateshasbeenfoundwhenJ=0bysolvingtheradialSchrdingerequationofnuclearmotion.Thecompletevibrationallevels,classicalturningpoints,initialrotationandcentrifugaldistortionconstantswhenJ=0arereportedforthefirsttime,whichareingoodaccordwiththeexperimentalresults.Thetotalandvariouspartial-wavecrosssectionsarecomputedfortheelasticcollisionsofsulfurandhydrogenintheirgroundstatesatlowtemperatureswhentwoatomsapproacheachotheralongtheSH(X2Π)potentialenergycurve.Overtheimpactenergyrangefrom1.0×10-11to1.0×10-4a.u.,eightshaperesonanceshavebeenfoundinthetotalelasticcrosssections.Foreachshaperesonance,theresonantenergyisaccuratelycalculated.Carefulinvestigationshavepointedoutthattheseresonancesresultfromthel=0,1,2,3,4,6,7,8partial-wavecontributions.