简介：Theground-stateandthermodynamicpropertiesofquantummixed-spinchainsof1/2-1/2-1-1and3/2-3/2-1-1areinvestigatedbyaquantumMonteCarlosimulationwiththeloop-clusteralgorithm.For1/2-1/2-1-1chain,wefindithastwophasesseparatedbyanenergy-gapvanishingpointintheground-state.For3/2-3/2-1-1chain,thenumericalresultsshowtwoenergy-gapvanishingpointsisolatedbydifferentphasesinitsground-state.Ourcalculationsindicatethatallthesegroundstatephasescanbeunderstoodbymeansofvalence-bond-solidpicture,andthethermodynamicbehavioratfinitetemperaturesiscontinuousasafunctionofparameterα=J2/J1.

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简介：IntheBigBangtheory,primordialnucleosynthesiswasfinishedduringfirsthalfhouroftheuniverse’sexistence.Thisprocessyieldedthemainlightelementsincludinghydrogen,deuterium,heliumandlithium.Thetheoreticalpredictionsmatchverywelltheobserveddeuteriumandheliumabundance,butthe7Liabundanceisoverpredictedbyafactorathree[1].Thisinconsistencyiscalled“cosmologicallithiumproblem”.Inthepastdecade,manyattemptstosolvethisproblemusingconventionalastrophysicsandnuclearphysicsfailed.Recently,weproposedanewsolutiontolithiumproblembyintroducingnon-extensivestatisticsintoBigBangnucleosynthesis[2].

简介：ThesplittingofpotentialenergylevelsforgroundstateX2ΠgofOx2(x=+1,1)underspin–orbitcoupling(SOC)hasbeencalculatedbyusingthespin–orbit(SO)multi-configurationquasi-degenerateperturbationtheory(SO-MCQDPT).TheirMurrell–Sorbie(M–S)potentialfunctionsaregained,andthenthespectroscopicconstantsforelectronicstates2Π1/2and2Π3/2arederivedfromtheM–Sfunction.TheverticalexcitationenergiesforOx2(x=+1,1)areν[O+12(2Π3/2→X2Π1/2)]=195.652cm1,andν[O12(2Π1/2→X2Π3/2)]=182.568cm1,respectively.Allthespectroscopicdataforelectronicstates2Π1/2and2Π3/2aregivenforthefirsttime.

简介：Thereisagrowingsupportforthelowlyingscalarmesonsf0(500),f0(980),a0(980),and(800)tobegenerateddynamicallyfromtheinteractionofpseudoscalarmesons,whilethecaseofthenextsetofscalarresonancesathigherenergies,f0(1370),f0(1710),K0(1430)ismoreaquestionofdebate.Soisthecaseofthetensorresonancesf2(1270),f′2(1525),K2(1430).AnewperspectiveonthesestateshasbeenofferedinRef.[1]wherethef0(1370)andf2(1270)resonancesareshowntobegeneratedfromtheinteractionprovidedbythelocalhiddengaugeLagrangiansimplementingunitarization.Itisshownthattheideaofthenatureofthesestatesasvectormeson-vectormesoncompositestateshasbeentestedinmanyreactions.Yet,thepermanentdiscussionoftheissuedemandsextrachecksforotherobservablesand,inthissense,theweakdecaysbringanewsourceofvaluableinformationthatshouldservetotestdifferentmodels.

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简介：Multi-nucleontransferreactionplaysanimportantroleinthesynthesisofnewnuclides[1].Inthereactionsof20Ne+209Bi,someshort-livednucleiproducedbytransferring26nucleonswerediscovered.Theexperimentof20Ne+209Biwasperformedatgas-filledrecoilseparatorinLanzhou[2].A400g/cm2thick209Bitargetwasbombardedwith20NebeamdeliveredbyacceleratorHIRFL.

简介：ThepresolarSiCgrains[1]carrytheoriginalstellarnucleosynthesissignature.Theirisotopicanomaliescomparedtothesunarethestrongconstrainsinthesupernovae(SN)modelcalculations.The15N-excessinsomeSiC-ABgrains(12C/13C<10and14N/15N<272)isoneofthechallengesofcore-collapsesupernovae(CCSNe)models[2].Recently,PignataripointedoutthattheentrainmentofH-richmaterialintotheHeshellbeforetheSNexplosionallowsthecoproductionof13C,15Nand26Al,whichprovidesanewproductionscenarioforSiC-ABgrains[2].IntheHeshellnucleosynthesis,the13Cisproducedthrough12C(p,γ)13N(β+γ)13Creaction.The14Nissynthesizedthrough13N(n,γ)and13C(p,γ)reactions.

简介：ThespectrumoftheΣ(1193)excitedstates,Σ,withisospinI=1andstrangenessS=??1isoneofthemostimportantissuesinhadronicphysics.TheΣresonancesaremostlyproducedandstudiedinK-inducedreactions.ManyΣresonancesarenowcatalogedbytheParticleDataGroup[1].However,ourknowledgeoftheseresonancesisstillverypoor.Intheenergyregionbelow2GeV,onlyafewofthemarewellestablished,suchastheΣ(1385)ofspin-parityJP=3=2+,Σ(1670)ofJp=3=2??andΣ(1775)ofJp=5=2??.Theothersarenotwellestablishedandsomeofthemareevenoflargeuncertaintiesontheirexistence.Thus,thestudyoftheΣresonancewiththeavailableexperimentaldataisnecessary.

简介：Usingtheextensionhomogeneousbalancemethod,wehaveobtainedsomenewspecialtypesofsolitonsolutionsofthe(2+1)-dimensionalKdVequation.Startingfromthehomogeneousbalancemethod,onecanobtainanonlineartransformationtosimple(2+1)-dimensionalKdVequationintoalinearpartialdifferentialequationandtwobilinearpartialdifferentialequations.Usually,onecanobtainonlyakindofsoliton-likesolutions.Inthisletter,wefindfurthersomespecialtypesofthemultisolitonsolutionsfromthelinearandbilinearpartialdifferentialequations.``

简介：WehavecomprehensivelyinvestigatedthefrustratedJ1-J2-J3Heisenbergmodelonasimplecubiclattice.Thismodelallowsthreeregimesofmagneticorder,viz.,(π;π;π),(0;π;π)and(0;0;π),denotedasAF1,AF2,andAF3,respectively.Theeffectsoftheinterplayofneighboringcouplingsonthemodelarestudiedintheentiretemperaturerange.Thezerotemperaturemagneticpropertiesofthismodelarediscussedutilizingthelinearspinwave(LSW)theory,nonlinearspinwave(NLSW)theory,andGreen’sfunction(GF)method.ThezerotemperaturephasediagramsevaluatedbytheLSWandNLSWmethodsareillustrated,andareobservedtoexhibitdifferentparameterboundaries.Incertainregionsandalongtheparameterboundaries,thepossiblephasetransformationsdrivenbytheparametersarediscussed.TheresultsobtainedusingtheLSW,NLSW,andGFmethodsarecomparedwiththoseobtainedusingtheseriesexpansion(SE)method,andareobservedtobeingoodagreementwhenthevalueofJ2isnotclosetotheparameterboundaries.ThegroundstateenergiesobtainedusingtheLSWandNLSWmethodsareclosetothatobtainedusingtheSEmethod.Atfinitetemperatures,onlytheGFmethodisemployedtoevaluatethemagneticproperties,andthecalculatedphasediagramisobservedtobeidenticaltotheclassicalphasediagram.Theresultsindicatethatattheparameterboundaries,atemperature-drivenfirst-orderphasetransitionbetweenAF1andAF2mayoccuralongtheboundaryline.AlongtheAF1-AF3andAF2-AF3boundarylines,AF3islessstablethanAF1andAF2.OurcalculatedcriticaltemperatureagreeswiththatobtainedusingMonteCarlosimulationsandpseudofermionfunctionalrenormalizationgroupscheme.

简介：WeinvestigatethesensitivityoftheangularrotationmeasurementwiththemethodofhomodynedetectioninSU（2）andSU（1,1）interferometersbyemployingorbitalangularmomentum（OAM）.BycombiningacoherentbeamwithavacuumbeaminanSU（2）interferometer,wegetthesensitivityoftheangularrotationmeasurementas1/(2N1/2l).WecansurpassthelimitoftheangularrotationmeasurementinanSU（1,1）interferometerbycombiningacoherentbeamwithavacuumbeamorasqueezedvacuumbeamwhentheprobebeamhasOAM.Withoutinjection,thesensitivitycanreach1/(2N1/2l).Inaddition,byemployinganotherconstructionofanSU（1,1）interferometerwherethepumpbeamhasOAM,withthesameinjectionofanSU（1,1）interferometer,thesensitivityoftheangularrotationmeasurementcanbeimprovedbyafactorof2,reaching1/（4Nl）.Theresultsconfirmthepotentialofthistechnologyforprecisionmeasurementsinangularrotationmeasurements.

简介：TheGroupofNuclearStructureResearchatIMPhasdevotedmuchefforttothestudyofin-beam-rayspectroscopyandγ-decayspectroscopy.Oneterminalforin-beam-rayspectroscopyhasbeennewlybuiltupin2016.Asforγ-decayspectroscopy,twopointsneedtobeemphasized.Inordertostudythein-beam-rayspectroscopy,aballwasplacedattheterminalofnewTL2beamline.Threequadrupolemagnetsfollowingthedipolemagnetarethemainbuildingblocksalongthebeamline.Theballconsistsof8cloverand16HPGedetectorswithaCsIballinsidetoselectthechargedparticlechannel.Awallisolatingtheballfromthequadrupoleswasusedtoshieldtheradiationproducedbytheacceleratoranddepositingenergyinthedetectors,whichmayresultinahighbackground.Theinstallationwasfinishedin2016andtheexperimentforin-beam-rayspectroscopyisexpectedtoperformin2017.

简介：TheGroupofNuclearStructureResearchatIMPhasdevotedmuchefforttothelifetimemeasurementsoflowlyingexcitedstatesvia??fasttimingcoincidence.Twoexperimentswereperformedin2015attheradioactivebeamlineRIBLL[1]andgas-filledrecoilseparatorSHANS[2].

简介：Weinvestigateanewclassofperiodicsolutionsto(2+1)-dimensionalKdVequations,byboththelinearsuperpositionapproachandthemappingdeformationmethod.Thesenewperiodicsolutionsaresuitablecombinationsoftheperiodicsolutionstothe(2+1)-dimensionalKdVequationsobtainedbymeansoftheJacobianellipticfunctionmethod,buttheypossessdifferentperiodsandvelocities.

简介：Asimplemethodisappliedtocalculatingtheisotopeshifts(ISs)on5S1/2→4D3/2,5/2transitionsof87,88Sr+.FirstwehavecalculatedtheISsoflowertransitionsonaseriesofalkali-likesystemssuchasB2+,Ca+andBa+,whichareinagreementwithotherworks.ThentheISson5S1/2→4D3/2,5/2transitionsof87,88Sr+,whichareusefultostudytheSr+opticalfrequencystandard,areevaluated.

简介：Nucleon-nucleon(NN)correlationsandtheirisospindependenceinasymmetricnuclearmatterareofgreatnterestsincetheyarecloselyrelatedtothestructureofneutron-richnuclei[1],particleproductioninheavy-ionollisions[2],andneutron-starphysics[3].Themany-bodycorrelationsamongnucleonscanbedirectlyreflectedintheneutronandprotonspectralfunctions[4],andthelattermayplayanimportantroleinunderstandingthenatureftheNNcorrelations,especiallytheshort-rangeandtensorcorrelationsinasymmetricnuclearmatter.

简介：Weprovideanewclassofinteriorsolutionofa(2+1)-dimensionalanisotropicstarinFinchandSkeaspacetimecorrespondingtotheBTZblackhole.WedevelopthemodelbyconsideringtheMITbagmodelEOSandaparticularansatzforthemetricfunctiongrrproposedbyFinchandSkea[M.R.FinchandJ.E.F.Skea,Class.Quantum.Grav.6(1989)467].Ourmodelisfreefromcentralsingularityandsatisfiesallthephysicalrequirementsfortheacceptabilityofthemodel.

简介：Startingfromthevariableseparationsolutionobtainedbyusingtheextendedhomogenousbalancemethod,anewclassofcombinedstructures,suchasmulti-peakonandmulti-dromionsolution,multi-compactonandmultidromionsolution,multi-peakonandmulti-compactonsolution,forthe(2+1)-dimensionalNizhnik-Novikov-Veselovequationarefoundbyselectingappropriatefunctions.Thesenewstructuresexhibitnovelinteractionfeatures.Theirinteractionbehaviorisverysimilartothecompletelynonelasticcollisionsbetweentwoclassicalparticles.

简介：1-(2-chlorophenyl)ethanol(CPE)isofhealthandenvironmentalconcernduetoitstoxicityanditsuseasaninter-mediateinpharmaceuticalmanufacturing.ThecurrentworkdealswiththecatalyticreductivedechlorinationanddetoxificationofCPEbyPd/Febimetal.CPEwaseffectivelydechlorinatedto1-phenylethanol(PE)accompaniedbytheequivalentreleaseofchloride.TheextentofCPEdechlorinationincreasedwithtemperature,FedosageandPdloading.AdecreaseinsolutionpHincreasedCPEdechlorination,resultingpresumablyfromanincreaseinhydrogenproduction.Underthespecificconditionsof20g/LPd/Fe,0.10%Pd(w/w)andinitialpH5-6,theCPEdechlorinationwascompletedwithin145min.Thedechlorinationfol-lowedapseudo-first-orderkineticswithanactivationenergyof56.7kJ/mol.TheresultsoftoxicitytestingshowedthatCPEwasverytoxictoChlorella,whereasPEshowedlittletoxicity.Thetoxicityofthereactionsolutiondeclinedgraduallyandthepro-motingeffectsonChlorellaintensifiedconsequentlywiththedechlorinationprocess.Thus,thereductivedechlorinationofCPEtoPEbyPd/Fewasadetoxificationprocess.ItmaybeusedtoeffectivelyreducethetoxicologicaleffectsofCPE-contaminatedwastewater,therebyenhancingtheperformanceofsubsequentbiologicalprocessesinwastewatertreatment.