简介：ＦｌｕｃｔｕａｔｉｏｎｏｆＥｘｃｉｔａｔｉｏｎＦｕｎｃｔｉｏｎｓｉｎＤｉｓｓｉｐａｔｉｖｅＨｅａｖｙｉｏｎＣｏｌｌｉｓｉｏｎｓ￥ＸｕＨｕｓｈａｎ；ＷａｎｇＱｉ；ＬｕＪｕｎ；ＬｉＳｏｎｇｌｉｎ；ＺｈｕＹｏｎｇｔａｉ；ＹｉｎＸｕ；ＦａｎＥ...

简介：ＦｌｕｃｔｕａｔｉｏｎｏｆＥｘｃｉｔａｔｉｏｎＦｕｎｃｔｉｏｎｓｏｆＤａｍｐｅｄＰｒｏｄｕｃｔｓｏｆＩｄｅｎｔｉｆｉｅｄＩｓｏｔｏｐｅｓ￥ＷａｎｇＱｉ；ＬｕＪｕｎ；ＸｕＨｕｓｈａｎ；ＬｉＳｏｎｇｌｉｎ；ＺｈｕＹｏｎｇｔａｉ；ＹｉｎＸ...

简介：一个计划被开发计算在电子影响刺激以后射出的放射的极化。充分相对论的弄歪波浪的方法是使用的品种内异系交配体节计算。计划被用于象他一样和象Li一样离子。线极化的计算价值与另外的理论结果和试验性的价值相比。象ForHe一样U在更低的事件精力，，现在的极化在更高的精力在1%以内同意另外的理论的，差别增加直到大约10%。为象他一样Fe和Ti，为大多数线的极化度的现在的结果在试验性的错误酒吧以内同意试验性的数据。为象Li一样Ti线q(1s2s2p(2)P(3/2)到1s(2)2s)，极化的现在的值与另一理论一个，和两个最优地同意值与在试验性的错误工具条以内的测量数据一致。

简介：Wediscussthedynamicsofultrashortpulsedlaserexcitationinbulkopticalsilica-basedglasses(fusedsilicaandborosilicateBK7)well-abovethepermanentmodificationthreshold.Weindicatesubsequentstructuralandthermomechanicalenergyrelaxationpathsthattranslateintopositiveandnegativerefractiveindexchanges,compressionandrarefactionzones.Iffastelectronicdecayoccursatlowexcitationlevelsinfusedsilicaviaself-trappingofexcitons,forcarrierdensitiesinthevicinityofthecriticalvalueattheincidentwavelength,persistentlong-livingabsorptivestatesindicatetheachievementoflowviscositymatterstatesmanifestingpressurerelaxation,rarefaction,voidopeningandcompactionintheneighboringdomains.Anintermediateps-longexcitedcarrierdynamicsisobservedforBK7intherangecorrespondingtostructuralexpansionandrarefaction.Theamountofexcitationandthestrengthofthesubsequenthydrodynamicevolutioniscriticallydependentonthepulsetimeenvelope,indicativeofpotentialoptimizationschemes.

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简介：Thediscoveryofexcitationfunctionfluctuationindissipativehearyioncollisions(DHIC)isasimportantasthediscoveryofDHICitself.ManyquantitativeinterpretationofDHICdataonlyarerestrictedtothedeseriptionoftheenergyaverageddifferentialcrosssections.However,thedescriptionofphysicalsystemsshouldinvolveboththeanalysisofaveragedvaluesandfluctuationsofobservables.Thephenomenonofexcitation

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简介：Inthispaper,theobtainedexperimentalresultsconcerningcreationofbulkelementaryexcitations(BEEs)iniso-topicallypureliquid4Heatlowtemperatures~60mKarediscussed.Positiverotons’(R+-rotons)creationbyapulsedheaterwasstudied.Signalswererecordedforthefollowingquantumprocesses:quantumevaporationof4He-atomsfromthefreeliq-uid-heliumsurfacebytheBEEsoftheliquidhelium-II,andBEEsreflectionfromthefreesurfacebackintothebulkliquid.Typicalsignalsareshown,andratiosofsignalamplitudesareevaluated.Forlongheaterpulsesfrom5to10μs,appearanceofthesecondatomiccloudconsistingofevaporated4He-atomswasobservedinadditiontothefirstatomiccloud.Itisthoughtthatthefirstatomiccloudoftheevaporatedheliumatomsconsistsofveryfast4He-atomswithenergies~35Kevaporatedbypositiverotonswiththespecialenergies~17K(~2ER~2×8.6KwithERrepresentingtherotonminimumenergy)correspondingtothethirdnon-dispersiveZakharenkowave.Thesecondcloudofslower4He-atomswascreatedbysurfaceelementaryexcitations(SEEsorripplons)possessingthespecialenergies~7.15Krepresentingthebindingenergy.ItwasassumedthatsuchSEEscanbecreatedbyphononsincomingtotheliquidsurfacewithspecialenergies~6.2Kcorrespondingtothefirstnon-dispersiveZakharenkowave,whichcaninteractattheliquidsurfacewiththesamephononsalreadyreflectedfromthesurfaceforlongheaterpulses.Also,somepulsed-heatercharacteristicswerestudiedinordertobetterunderstandthefeaturesofsuchheatersinlowtemperatureexperi-ments.

简介：Inthispaper,byapplyingasimplifiedversionofLieb'sspin-reflection-positivitymethod,whichwasrecentlydevelopedbyoneofus[G.S.TianandJ.G.Wang,J.Phys.A:Math.Gen.35(2002)941],weinvestigatesomegeneralpropertiesoftheboeon-fermionHamiltonlan,whichhasbeenwidelyusedasaphenomenologicalmodeltodescribethereal-spacepairingofelectrons.Onamathematicallyrigorousbasis,weprovethatforeithernegativeorpositivecoupingV,whichrepresentsthespontaneousdecayandrecombinationprocessbetweenbosonandfermioninthemodel,thepairingenergyofelectronsisnonzero.Furthermore,wealsoshowthatthespin-excitationgapoftheboson-fermionHamiltonianisalwayslargerthanitschargedgap,aspredictedbythepre-palredelectrontheory.

简介：Ｅｘｃｉｔａｔｉｏｎ　Ｆｕｎｃｔｉｏｎ　ｏｆ　Ｆｉｓｓｉｏｎ　ａｎｄ　Ｔｒａｎｓｆｅｒ　Ｒｅａｃｔｉｏｎ　ｉｎ　Ｂｏｍｂａｒｄｍｅｎｔ　ｏｆ　４０Ａｒ　ｏｎ　１５９Ｔｂ　ＮｕｃｌｅｉＥｘｃｉｔａｔｉｏｎＦｕｎｃｔｉｏｎｏｆＦｉｓｓｉｏｎａｎ...

简介：Weinvestigatethesuperpositionpropertiesofthedipoleandquadrupoleplasmonmodesinthenearfieldbothexperimentally,byusingphotoemissionelectronmicroscopy(PEEM),andtheoretically.Inparticular,theasymmetricnear-fielddistributionsongold(Au)nanodisksandnanoblocksunderobliqueincidencewithdifferentpolarizationsareinvestigatedindetail.TheresultsofPEEMmeasurementsshowthattheevolutionsoftheasymmetricnear-fielddistributionsaredifferentbetweentheexcitationwiths-polarizedandp-polarizedlight.Theexperimentalresultscanbereproducedverywellbynumericalsimulationsandinterpretedasthesuperpositionofthedipoleandquadrupolemodeswiththehelpofanalyticcalculations.Moreover,wehypothesizethattheelectronscollectedbyPEEMaremainlyfromtheplasmonichotspotslocatedattheplaneintheinterfacebetweentheAuparticlesandthesubstrateinthePEEMexperiments.

简介：Ｒｅｌａｔｉｏｎ　ｏｆ　Ｔｅｍｐｅｒａｔｕｒｅ　ａｎｄ　Ｅｘｃｉｔａｔｉｏｎ　Ｅｎｅｒｇｉｅｓ　ｏｆ　Ｈｏｔ　Ｎｕｃｌｅｉ　ｉｎ　Ｒｅａｃｔｉｏｎｓ　ｏｆ　４０Ａｒ＋ｎａｔＡｇ　ａｔ　２５ＭｅＶ／ｕＲｅｌａｔｉｏｎｏｆＴｅｍｐｅｒａｔｕｒｅ...

简介：Femtosecond导致激光的提高回声的multiphoton电离光电子光谱学(REMPI-PS)面临二个缺点低光谱分辨率和差的选择刺激由于女人光谱带宽。我们建议一个计划获得高分辨率的选择刺激(2+1)由联合和cosinusoidal阶段调整的REMPI-PS。我们的理论结果显示(2+1)与附近的激动的状态有关的REMPI-PS信号能被阶段调整区分开来与他们的难区分的光电子系列，然后他们的选择刺激能被补加地增加cosinusoidal阶段调整认识到。而且，高分辨率的选择刺激的物理机制(2+1)REMPI-PS被考虑二光子的力量光谱解释。

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