简介：给出了北京正负电子对撞机（BEPC）同步辐射新组装的3W1Wiggler束斑强度分布及光子束流的测量结果，并与理论计算作了比较，两者得出了一致的结果。

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简介：PhotocatalystwaspreparedbyimmobilizingTiO_2onglassbeadsusingthetradi-tionalsol-gelmethod.Ultravioletlight(UV)producedbypulsedstreamerdischargewasthenusedtoinducephotocatalyticactivityofTiO_2photocatalyst.Decolourationefficiencyoftherep-resentativeazodye(acidorange7,AO7)wasinvestigatedusingthesynergisticsystemofpulsedstreamerdischargeplasmaandTiO_2photocatalysis.Theobtainedresultsshowedthatthede-colourationrateofAO7couldbeincreasedby16.7%undertheconditionofaddingsupportedTiO_2inthepulsedstreamerdischargesystem,comparedtothatinthesolepulsedstreamerdischargeplasmasystem,duetothesynergisticeffectofpulsedstreamerdischargeandTiO_2photocatalysisinducedbypulsedstreamerdischarge.ThesynergisticsystemofpulsedstreamerdischargeandTiO~photocatalystwasfoundtohavemorereactiveradicalsfordegradationoforganiccompoundsinwater.

简介：Theoreticalcalculationandexperimentalresultsforapolarizerwithsinusoidalgroovesusedintheelectroncyclotronresonanceheating(ECRH)systemoftheHL-2Atokamakarepresented.Thecalculationisbasedonanintegralmethoddevelopedinthevectortheoryofdiffractiongratings,andthepolarizationcharacteristicsobtainedwithalow-powertestareingoodagreementwiththenumericalcalculatedresults.WiththepolarizerassembledinamiterbendintheECRHtransmissionline,pureordinarymode(O-mode)andextraordinarymode(X-mode)polarizedwavesarealsoexpectedinthehigh-powerexperiment,dependingonthepolarizerrotationangleandthetoroidalinjectionangleoftheelectroncyclotron(EC)wavebeam.Second-harmonicX-modeexperimentsweresuccessfullyexploredinHL-2A.Experimentalresultrevealedthattheelectrontemperatureincreasedfrom0.8keV(Ohmicheatingphase)to1.5keV(secondX-modeheatingphase).

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简介：该册包含预应力或增强的混凝土安全壳结构的材料、设计、建造、制造、试验、检验、超压保护要求。这些要求只适用于那些旨在提供压力保持或包含屏障的部件。这些要求不适用于其他支承结构,直接影响到系统部件的支承结构除外。针对第2册的建造,该卷包含强制性和非强制性的附录。该2013年版的主要变化包括：——对检验技术和强制性附录Ⅵ（无损检验技术）要求的修改。——对强制性附录Ⅷ（电弧焊接钢筋合格评定）的修改。

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简介：Thepreliminarydesignofamulti-barrelspelletinjectorwithcyclerefrigeratorasanadvancedplasma-fuellingtoolforHL-2Atokamakhasbeenproposed.Thedesignaimsatprecisetemperaturecontrol,easyoperation.withhighreliabilityandhighflexibility.GM-cyclerefrigeratorandpipe-gunStructurehavebeenemployedtoproduce25pelletsin25gunbarrelssimultaneouslyandthedesignaims.havebeenaccomplished.Primedesignprinciple,engineeringparameters,structureandlayoutofthecryostatcomponentsaswellascalculationofheatloadforthecryostatarepresented.

简介：TheprecisionofplasmaelectrondensityandFaradayrotationanglemeasurementisakeyindicatorforfar-infraredlaserinterferometer/polarimeterplasmadiagnosis.Toimprovetheprecision,anewmulti-channelhighsignal-to-noiseratioHCOOHinterferometer/polarimeterhasbeendevelopedontheHL-2Atokamak.Ithasahigherlevelrequirementforphasedemodulationprecision.Thispaperintroducesanimprovedreal-timefastFouriertransformalgorithmbasedonthefieldprogrammablegatearray,whichsignificantlyimprovestheprecision.Wealsoapplyareal-timeerrormonitoringmodule(REMM)andastableerrorinhibitingmodule(SEIM)forprecisioncontroltodealwiththeweaksignal.Wetesttheinterferometer/polarimetersystemwiththisimprovedprecisioncontrolmethodinplasmadischargeexperimentsandsimulationexperiments.Theexperimentalresultsconfirmthattheplasmaelectrondensityprecisionisbetterthan1/3600fringeandtheFaradayrotationanglemeasurementprecisionisbetterthan1/900fringe,whilethetemporalresolutionis80ns.ThisperformancecanfullymeettherequirementsofHL-2A.

简介：InHL-2Atokamaks,thebehaviorofheatfluxdepositedonthedivertortargetshasbeenstudiedduringdeuteriumgasfuelling.Theheatfluxisreducedsignificantlyaftersupersonicmolecularbeaminjection(SMBI)fuellingduringOhmicandelectroncyclotronresonanceheating(ECRH)divertordischarges.TheSMBIfuellingcausesanincreaseintheplasmadensityandthischangeresultsintheexperiencedchangeoftheedgeproperties.MostofthisreductionindivertortargetheatfluxoccurstogetherwithahighplasmaradiationregionlocatedatneartheX-point.Thelargestreductioninheatfluxprofilesisobservedattheoutboarddivertorseparatrixstrikepoint,whiletheheatfluxfarfromthestrikepointremainsalmostunchanged.Inparticular,withSMBImulti-pulsesgasfuelling,apartiallydetacheddivertorregimeisobservedwithahighlyradiatingregionattheX-point.Withtheonsetofthepartiallydetacheddivertorregime,asuddendropinbothheatfluxandpowerflowonthedivertortargetisobserved.Thereductioninpowerloadonthedivertortargetsisroughlyequaltotheincreaseinplasmaradiationloss.

简介：Theγ-Fe2O3nanoparticlescoatedwithDBSandCTABwerepreparedbythemicroemulsionmethod.Thecoatedsamplesshowenhancednonlinearopticalpropertiescomparedwiththeirbulkcouterpart.The.Moessbauerspectraatroomtemperatureweremeasuredforthecoatedferricoxides.Themonolayersoftheorganicmoleculearefoundtohaveastrongchemicalbondwiththesurfaceatomsandthushaveasignificantinfluenceontheelectronstructureofparticlesurface.@1999ActaMetallurgicaInc.

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简介：TheNi-AlalloycontainingCr,FeadditiveswerepreparedasRaneyNiCatalystbyhighenergymilling.ThesizeandsurfacestateofNi-Alalloypowderwerestudiedbyparticlesizeanalyzerandsanningelectronmicroscopy.theStructurewasanalyzedbyXRDandMoessbauermethods.Theresultsshowedthatafterahigh-energymilling(HEM).theNi-Alalloytransformstoanano-scaleNiAlstructurewithrichAl.Byannealingthealloy,ametastableNi2Al3phasecanbeobtained.

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简介：ThetransientopticalpropertiesofnovelPbSnanoparticlescoatedwith2.6-O-diallyl-β-cyclodextrines(CDs)werestudiedbythefemtosecondpump-probetechnique.Theresultsshowthattheultrafasttransient-inducedabsorptionforthenovelcase.ComparedtothePbSnanoparticlesstabilizedwithpolyvinylalcohol(PVA),wefindthattheprocessforthenovelcaseisdifferentfromthePbS(PVA),WesuggestthattheCDssurfacemodificationcantrapholesonthesurfaceofPbSnanoparticles.ThiscaninduceanefficientchargeseparationbetweenthePbSnanoparticlesanditssurfaceandresultinanultrsafast-inducedabsorptionfornovelPbSnanoparticles.

简介：Thenanoparticlesγ-Fe2O3coatedwithsurfactants.DBS,STandCTAB.repsectively.weresynthesizedbymicroemulsionmethod.Thecoatedferricoxides.whichshowenhancednonlinearopticalpropertiescomparedwiththeirbulkcounterpart.wereprobedbyEXAFSinsolutionforms.Thex=-rayabsorptionspectraforFeKedgeweremeasuredatroomtemperaturebyhelpofsynchrotronradiationlightsource.Extendedx-rayabsorptionfinestructureanalysisshowsthatthecoatinglayersoforganicmoleculesinteractwithsurfaceatomsofnanopartices,theFe-Obondlengthwasextended.

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