简介:ThedosimetricphosphorsLi_3PO_4:M(M=Tb,Cu)wereproducedbymodifiedsolid-statemethod.ThestructuralandmorphologicalcharacterizationwascarriedoutthroughX-raydiffraction(XRD)andscanningelectronmicroscope(SEM).Additionally,thephotoluminescence(PL),thermoluminescence(TL)andopticallystimulatedluminescence(OSL)propertiesofpowderLi_3PO_4dopedwithTbandCuwerestudied.ItisadvocatedthatLi_3PO_4:CuphosphornotonlyshowshigherOSLsensitivity(25timesormore)butalsogivesfasterdecayinOSLsignalsthanthatofLi_3PO_4:Tb~(3+)phosphor.Theminimumdetectabledose(MDD)ofLi_3PO_4:M(M=Tb,Cu)phosphorsisfoundtobe21.69×10~(-3)and3.33×10~(-6)J·kg~(-1),respectively.InOSLmode,phosphorshowslineardoseresponseintherangeof0.02-20.00J·kg~(-1).InTLmode,sensitivityofLi_3PO_4:CuphosphorismorethanthatofLi_3PO_4:Tbphosphor.Thekineticsparameterssuchasactivationenergyandfrequencyfactorsweredeterminedbypeakshapemethod,andphotoionizationcrosssectionsofpreparedphosphorwerecalculated.
简介:摘要文章针对1m全液压铣刨机铣刨系统展开论述,主要分析了系统结构以及运行原理,并对负荷试验进行了分析,总结出铣刨液压系统运行注意要点,希望能够为今后沥青混凝土路面养护提供参考。
简介:教学目标:基础性目标:I.Knowledgeobjectives:Tolearntousethepresentprogressivetense.II.Abilityobjectives:Tolearntotalkaboutwhatpeoplearedoing.III.Moralobjective:Tolearntogetalongwellwithourfamilymembers,neighborsandfriends.Companyisthelongestconfessionoflove.发展性目标:1.Tohelpthestudentsdevelopthelisteningandspeakingskills.2.Toleadthestudentstoenhancetheresponsibilitiesofhome.
简介:BystudyingthespectralpropertiesoftheunderlyingoperatorcorrespondingtotheM/G/1queueingmodelwithoptionalsecondserviceweobtainthatthetime-dependentsolutionofthemodelstronglyconvergestoitssteady-statesolution.Wealsoshowthatthetime-dependentqueueingsizeatthedeparturepointconvergestothecorrespondingsteadystatequeueingsizeatthedeparturepoint.
简介:Aneight-shotspelletinjection(PI)andasupersonicmolecularbeaminjection(SMBI)systemhaveproposedanddevelopedontheHL-1Mtokamakforadvancedfuellingexperiments.ThepeakeddensityprofileandimprovedconfinementaretypicalfeatureofPIandSMBIdischarge.ItstronglydependsonthewallrecyclingconditionsoftheHL-1Mtokamakandinjectionparameters.
简介:美国最近公布的伊拉克战争报告披露,号称“陆战之王”的M1坦克并非无懈可击.在俄制反坦克武器面前仍有可以利用的严重弱点。
简介:IntheHL-1Mplasmaexperiments,tworefuelingways,thepelletinjectionandthegaspuffing,areusuallyused.Inrecentyears,anewrefuelingmethod,thesupersonicmoleculebeam(SMB)injection,hasbeendeveloped.SMBinjectionisanattempttoenhancethepenetrationdepthandthefuellingefficiencyofgas,aswellastoreducesurfaceabsorptionoftheinjectedparticlesandtheimpuritycontentintheplasma.InSMBinjectionexperiments,thegasisinjectedintotheplasmathroughaLavalnozzleathighgaspressure.Inthiscase,thepeakdensityandimprovingconfinementhavebeenachievedasinthecaseofapelletinjection.
简介:Anomaloustransportisoneofthemostimportantsubjectsforthetokamakresearch.Experimentshaveconfirmedthatanomaloustransportiscausedbyturbulencesdrivenbytemperatureanddensitygradientinplasma.Theexperimentsshowthationdiffusioncanbereducedtoneoclassicallevelinhighparameterplasmawithinternaltransportbarrier.