简介：

简介：Forasystemofflexiblepolymermolecules,theconceptsoftwoconcentrations,namelythesegmentalandthemolecularconcentrations,havebeenproposedinthispaper.Theformerisequivalenttothevolumefraction.Thelattercanbedefinedasthenumberofthegravitycentersofmacromoleculesinaunitvolume.Thetwoconcentrationsshouldbecorrelatedwitheachotherbytheconformationalfunctionofthepolymerchainandshouldbediscussedindifferentthermodynamicequations.OnthebasisoftheseconceptsithasbeenprovedthattheFlory-Hugginsentropyofmixingshouldbetheresultofthemixing'idealgasesofthegravitycentersofmacromolecules'.Thegeneralcorrelationbetweenthefreeenergyofmixingandthescatteringfunction(structuralfactor)ofpolymerblendshasbeenstudiedbasedonthegeneralfluctuationtheory.WhentheFlory-Hugginsfreeenergyofmixingisadopted,thedeGennesscatteringfunctionofapolymerblendcanbederived.

简介：由比较生气的节因为左手、右手的电子从各种各样的unpolarized散布了原子目标，小违背同等值的不对称现象能被测量。这些不对称现象数据探查许多重要话题，包括为新基本相互作用和原子结构的重要特征的搜索，那不能与另外的探针被学习。这些实验的特殊特征是结果被解释与的A显著地很少理论无常，它认为正当把实验推到最高可能的精确。精确地测量小不对称现象，很多种新奇试验性的技术被开发了。

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简介：Weshowhowquantumentangledbiphotonstatescanbeusedtorealizeghostscattering,anonlocalschemetoobtainscatteringinformationofanunknownobjectthroughthecorrelationmeasurementofthescatteringphotonsintwodifferentopticalpaths.WepresentaframeworktodescribethebiphotonghostscatteringprocessfromtheT-matrixformulaofthescatteringtheory.Wefindthescatteringinformationofatestobjectcanberetrievedfromeitherthetestarmorthereferencearm.Byadjustingthebiphotonstates,theghostscatteringpatternsmaybevariedfromthescatteringpatternoftheobjectinthetestarmtotheobjectinthereferencearm.

简介：Ifthefrequencyoftheincidentsoundwavecoincideswithoneoftheeigenfrequenciesoftheunderwaterelasticcylinder,thecorre-spondingeigenvibrationwillbeexcitedbyincidentsoundwaveandstronglyreradiatesoundwavetowardssurrondingwater.Ithasbeenre-vealedbypreviousinvestigationsthattheamplitudeofbackscatteringsoundappearstobeminimumattheeigenfrequenciesoftheunderwatermetalliccylindersbecauseofthedestructiveinterferencebetweenreradiatedwaveoftheeigenvibrationandthegeometricalreflectedwavefromsurfaceofthecylinders.Inthispaper,anewphenomenonhasbeenrevealed.Theamplitudeofbackscatteringsoundappearstobemaximumattheeigenfrequenciesofacylindermadefromnonmetallicmaterialinwhichthevelocityofelastictransversewaveislessthanthesoundvelocityinwater.

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简介：Thespectralpurityoffiberlasershasbecomeacriticalissueinbothopticalsensingandcommunicationfields.Asaresultofultra-narrowintrinsiclinewidth,stimulatedthermalRayleighscattering(STRS)haspresentedspecialpotentialtocompressthelinewidthoffiberlasers.TosuppressstimulatedBrillouinscattering(SBS),themostdominantdisturbanceforSTRSinopticalfibers,asemi-quantitativeestimationhasbeenestablishedtoilluminatethemechanismofsuppressingSBSinaperiodictaperedfiber,anditagreeswithexperimentalresults.Finally,alinewidthcompressiondevicebasedonSTRSisintegratedintoasingle-longitudinal-modering-cavityfiberlaserwithsecondarycavities,anditslinewidthisverifiedtobe200Hzthroughaself-heterodynedetectingandVoigtfittingmethod.

简介：在东方半球的PKP(DF)的变细以同时解释一种思索的关系的多重散布被检验，相应于强壮的变细的一个相对快的速度异例。有一个维的随机的速度变化的反射率synthetics与振幅比率和微分旅行为赤道的路径PKP(Cdiff)-PKP(DF)预定的PKP(DF)/PKP(Cdiff)的观察相比。有5%，6%，和7%的标准差在的P波浪速度变化的Gaussian分布最高内部核心的200km在是比在东方半球的典型结构稍微快的速度结构上被附加，根据仅仅一个维的结构被考虑，它是可能的解释旅行时间和振幅数据。在二的scatterer分发特征、三尺寸的统计数值的进一步的考试被要求获得一个现实主义的结论。

简介：Muellermatrixelementsarepresentedrepresentingscatterto90°fromanincidentpolarizedlaserbeam.Thecasedsconsideredincludefiveparticlesizes(suchas1.24μm，0.494μm,0.36μm,0.123μm,and0.065μm),twconcentrations(suchas0.0025%and0.005%byvolume),andthreedetectordepths(suchas0,1.5cm,and3cmintothescateringvolume).Ifthemagnitudesoftheelementscanberoundedofftothenearest0.01,aparticlesizedependenceisdescribedbytheresultingaveragematrices,whichisonlytwomatricesford>0.22μmandd<0.22μmwhicharenonsingularandasymmetric,respectively.

简介：Theinversescatteringproblemsaretodetectthepropertyofobstaclesfromthemeasurementsoutsidetheobstacles.Oneofimportantresearchareasinthistopicistherecoveryofboundarypropertyforimpenetrableobstacles.Inthispaper,wewouldliketogiveabriefreviewabouttherecentlydevelopedsingularsourcemethods.Therearethreedifferentmethodsinthiscategory,namely,linearsamplingmethod,pointsourcemethodandprobemethod.Wealsopresentsomerecentnewresultsabouttheprobemethod.

简介：Morestableandaccuraterecursiveformulasandacomputingprocedureforscat-teringcoefficientcalculationofamultilayeredsphereareproposed,ThisprocedureinvolvesthreelogarithmicderivativesofRicatti-Besselfunctionψ_n~＇(z)/ψ_n(z),X_n~＇(z)/X_n(z),ξ_n~＇(z)/ξ_n(z),aswellastheratioψ_n(z)/X_n(z).Theasymptoticbehavior,stability,andaccuracyoftheprocedureandscatteringcoefficientsa_nandb_narediscussedforvariouscomplexrefractiveindices.Thisprocedurecanbeappliedtolargeandsmallinhomogeneoussphericalparticles.

简介：Thisreviewcoverstheprogressoflightscatteringapplicationsinthefieldofparticlecharacterizationinthepastdecade.Thereviewaddressesstaticlightscattering(themeasurementofscatteringintensitiesduetolight-particleinteractionatvariousspatiallocations),dynamiclightscattering(themeasurementofscatteringduetolight-particleinteractionasafunctionoftime),andscatteringtrackinganalysis(thetrackingofparticlemovementthroughscatteringmeasurement).

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简介：我们导出通过和事件激光领域，射出的光子，和磁性的wiggler在在第一免费电子的激光(FEL)作为使不安的唯一的zeroth顺序扮演古典地的磁性的wiggler生产的一个轴的静电的领域的一个电子的三量的相互作用散布的生气的节。在推导，我们使用量摆动electrodynamics(QWD)。我们发现这散布支配平常的二量的散布。由三量的散布稀释的上述静电的领域驾驶的自发的免费电子的二量的空排放的输出力量在第一FEL的情况中与测量力量在10的一个因素以内同意。

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简介：Adopting'simultaneoustransmitting,simultaneousreceiving'operationalscheme,instantaneouspolarizationradar(IPR)canmeasuretargetpolarizationscatteringmatrix(PSM)usingonlyoncetargetechoesintwoorthogonalpolarizationchannels.Firstly,signalmodelandsignalprocessareadvancedundernarrowbandcondition.Secondly,measurementperformancesoftwotypicalIPRwaveformsareanalyzedindetail.Atlast,fieldexperimentsarecarriedoutusingX-bandIPRsystemdesignedbyNationalUniversityofDefenseTechnology(NUDT),China.Comparedwithresultsobtainedbyalternativepolarizationmeasurementscheme,followingresultscanbeobtained:thedifferenceofrelativeamplitudemeasurementresultsissmallerthan2dBandthatofrelativephasemeasurementresultsissmallerthan10?,verifyingthevalidityofinstantaneouspolarizationmeasurementscheme.

简介：Ta/MgO/NiFe/MgO/TaultrathinfilmswithandwithoutintercalationofNiFenanoparticlesinMgOlayerswerepreparedbymagnetronsputtering,followedbyavacuumannealingprocess.Themeasuredandcalculatedresultsshowthattheformerhashigherspecularelectronscattering(SES)parameteratMgO/NiFeinterfaces,lowerresistivity,andhighermagnetoresistance(MR).Theimprovedtransportproperties(TPs)aremainlyattributedtothesuppresseddiffuseelectronscatteringbymeansoftheintroductionofNiFenanoparticles.

简介：ThecombinedcharacterizationsofmobilityandphononscatteringspectraallowustoprobeholetransportprocessinepitaxialPbSecrystallinefilmsgrownbymolecularbeamepitaxy(MBE).ThemeasurementsofHalleffectshowp-typecon-ductivityofPbSeepitaxialfilms.At295K,thePbSesamplesdisplayholeconcentrationsof(5～8)×1017cm–3withmobilitiesofabout300cm2/(V·s),andat77Ktheholemobilityisashighas3×103cm2/(V·s).Fivescatteringmechanismslimitingholemobilitiesaretheoreticallyanalyzed.ThecalculationsandRamanscatteringmeasurementsshowthat,inthetemperaturesbetween200and295K,thescatteringofpolaropticalphononmodesdominatestheimpactontheobservedholemobilityintheepitaxialPbSefilms.RamanspectracharacterizationobservedstrongopticalphononscatteringsathightemperatureinthePbSeepitaxialfilms,whichisconsistentwiththeresultofthemeasuredholemobility.

简介：在这篇论文考虑的反的问题是从散布波浪的远地模式的时间泛音事件地和阶段和振幅的知识决定形状和一个障碍的阻抗在二尺寸。单个层的潜力被用来接近散布波浪。一个近似方法被介绍，建议方法的集中被建立。数字例子被给证明这个方法精确、易用。