简介：Neutralbeaminjection(NBI)isrecognizedasoneofthemosteffectivemeansforplasmaheating.A100slongpulseneutralbeamwith30keVbeamenergy,10Abeamcurrentanda100slongpulsemodulatingneutralbeamwith50keVbeamenergy,16AbeamcurrentwereachievedintheEASTneutralbeaminjectoronthetest-stand.ThepreliminaryresultssuggestthatEAST-NBIsysteminitiallypossesstheabilityoflongpulsebeamextraction.

简介：Moleculardynamicssimulationswereperformedtostudytheinteractionbetweenatomichydrogenandsiliconcarbide.Inthepresentstudy,wefocusontheeffectofthesurfacetemperatureonHinteractingwithsiliconcarbide.ThesimulationresultsshowthattheretentionofHatomsinthesampledecreaseslinearlywithincreasingsurfacetemperature.ThedepthprofileanalysisshowsthatthesampleismodifiedbyHbombardment,andthedensityofHatomsisgreaterthanthoseofSiandCatomsneartheinterfaceregionbetweentheH-containingregionandthebulk.However,nearthesurfaceregionthedensitiesofH,SiandCatomsarealmostequivalent.Inthemodifiedlayer,thebondsconsistofSi-CandSi-HandC-H.ThefractionofSi-Cbondsisthegreatest.OnlyafewC-Hbondsarepresent.

简介：Geepilayersofdifferentthicknessesaregrownbymolecular-beamepitaxywithSbasasurfactantonSI(100)substrates,X-raydiffractionillustratesthattheseGethinfilmsarepartiallystrained.andthestrainsdecreasegraduallywithincreasingepilayerthickness,RamanspectrarevealadownwardshiftoftheGe-Gemodepeakastheepilayerthicknessincreases.Intheregionsofhighstrain,therelationshipbetweentheRamanshiftofthismodeandthestraininthepartiallyrelaxedsamplesisconsiderablydifferentfromthelinearrelationshipreportedbefore,whichismainlyattributedtothespatialconfinementeffectofphononsinananocrystal.

简介：本文利用XAFS方法研究机械合金化方法制备的Fe100-xCux(x=0,10,20,40,60,70,80,100,x为原子百分比）合金中Fe、Cu原子的局域环境结构随组成的变化。对于Fe100-xCux二元混合物，当x≥40时，Fe原子的近邻配位结构从bcc转变为fcc，但Cu原子的近邻结构保持其fcc不变；与之相反，当x≤20时，Fe原子的近邻配位保持bcc结构而Cu原子的近邻配位结构从fcc转变为bcc结构。XAFS结果还表明fcc结构的Fe100-xCux中Fe的无序因子σ（0．009A）比bcc结构的Fe100-xCux中的σ（0．081A）大得多；并且在同一机械合金化Fe100-xCux（x≥40）样品中Fe原子的σ（0．099A）比Cu原子的σ（0．089A）大。这表明机械合金化的Fe100-xCux样品中Fe和Cu原子可以有相同的局域结构环境但不是均匀的过饱和固溶体，而是fcc或bcc合金相同时存在Fe富集区和Cu富集区。

简介：Alargediamondcrystalupto500μmindiameterwithasmooth(100)facetatitstophasbeensynthesizedonMosubstratethroughmicrowaveplasmachemicalvapordeposition(MPCVD).Itsmorphologyandqualitywerecharacterizedbyscanningelectronmicroscopy(SEM),andthegrowthmechanismwasroughlyillustratedfrombothmacroscopicandmicroscopicviewpoints.Itwasfoundthatmorphologicalinstabilitiesareamajorfactorresultinginsynthesisoflargediamondcrystals,moreover,highmicrowavepowerdensity(MPD),highCH4concentrations,highpressure,highsubstratesurfacetemperatureandtheadditionofasmallamountofO2werealsonecessaryforthesynthesisoflargediamondcrystals.

简介：StationarylongpulseplasmaofhighelectrontemperaturewasproducedonEASTforthefirsttimethroughanintegratedcontrolofplasmashape,divertorheatflux,particleexhaust,wallconditioning,impuritymanagement,andthecouplingofmultipleheatingandcurrentdrivepower.Adischargewithalowersinglenulldivertorconfigurationwasmaintainedfor103sataplasmacurrentof0.4MA,q95≈7.0,apeakelectrontemperatureof>4.5keV,andacentraldensityne（0）2.5×1019m-3.Theplasmacurrentwasnearlynon-inductive(Vloop<0.05V,poloidalbeta0.9)drivenbyacombinationof0.6MWlowerhybridwaveat2.45GHz,1.4MWlowerhybridwaveat4.6GHz,0.5MWelectroncyclotronheatingat140GHz,and0.4MWmodulatedneutraldeuteriumbeaminjectedat60kV.Thisprogressdemonstratedstrongsynergyofelectroncyclotronandlowerhybridelectronheating,currentdrive,andenergyconfinementofstationaryplasmaonEAST.Itfurtherintroducedanexampleofintegrated'hybrid'operatingscenarioofinteresttoITERandCFETR.

简介：

简介：GaInP/GaAs/Getriple-junctionsolarcellswereirradiatedwith50keVand100keVprotonsatfluencesof5×1010cm-2,1×1011cm-2,1×1012cm-2,and1×1013cm-2.Theirperformancedegradationisanalyzedusingcurrent-voltagecharacteristicsandspectralresponsemeasurements,andthenthechangesinIsc,Voc,Pmaxandthespectralresponseofthecellsareobservedasfunctionsofprotonirradiationfluenceandenergy.Theresultsshowthatthespectralresponseofthetopcelldegradesmoresignificantlythanthatofthemiddlecell,and100keVproton-induceddegradationratesofIsc,VocandPmaxarelargercomparedwith50keVprotonirradiation.

简介：

简介：

简介：IntheframeworkoftheITER,qualificationtests,thefirstChinaTFconductorsample（CNTFl）wastestedattheSULTANfacility.ThesamplewasmadeoftwoTFconductorsectionsmanufacturedfromidenticalinternalstannumstrandsprovidedbytheOxfordSuperconductingtechnologycompany（OST）.Inordertoevaluatetheconductorperformance,thecurrentsharingtemperature(Tcs)wasmeasuredatspecifiedelectromagneticloadcyclingsteps.BothconductorsectionsoftheCNTFlsampleshowedidenticalperformance.Tcswas7.2Kbeforecyclingloading,and6.9Kevenafter950cycles,withoutsignificantdegradation,whichsubstantiallyexceedstheITERrequirementof5.7K.ThetestsoftheCNTFlconductorsampleshowedthattheelectromagneticcyclicloadexhibitedanegligibleeffectontheconductorperformance.Thecouplingtimeconstant8forAClosswas214msand71.52msbeforeandafterthecyclingload,respectively.Thetestresultsofthesamplearecomparedwiththestrandperformanceandparametermodelanalysis.

简介：

简介：

简介：本文用电泳分离技术与同步辐射X射线荧光分析（SRXRF）相结合实现了人肝胞液蛋白质中微量元素的原位测定。结果表明人肝胞液PeakⅢ蛋白组分以含锌为主，与用原子吸收法得到的结果一致。这一初步尝试充分证明了用SRXRF技术实现蛋白质电泳分离原位监测的可行性。

简介：本文通过增加一个干胶步骤对本实验室提出的基于SDS-凝胶电泳技术和同步辐射X射线荧光分析技术(SRXRF）的蛋白质中微量元素的原位测定方法进行了改进。对从人体肝脏组织中提取的细胞质蛋白中的金属蛋白分布进行了原位测定。结果表明：在15-95kD范围内有六个含锌蛋白，相对分子量分别为20、25、35、55、63、93kD，其中63kD蛋白为主要的合锌蛋白；至少有四种含铁蛋白分布于这个分子量范围内，分于量分别为27、30、42、83kD。证明SRXRF技术可很好地用于蛋白电泳分离后金属离子的原位检测。

简介：研究了运用电泳分离技术与同步辐射X射线荧光分析（SRXRF）相结合实现蛋白分离过程中微量元素原位测定的分析方法。对从人体肝脏组织提取的胞液蛋白经过SDS－PAGE分离后凝胶板中蛋白条带上金属离子的分布进行了分析，结果表明人肝胞液PeakⅢ蛋白组分以含Zn为主，与非核分析方法原子吸收法得到的结果一致。证明采用SRXRF技术可实现蛋白电泳分离的原位监测。

简介：采用同步辐射X荧光分析法，直接测定了兔金属硫蛋白中的金属离子含量，以及经过SDS－PAGE分离后凝胶板中蛋白条带上金属离子的分布，结果表明：兔MT－1以含锌为主，占总金属含量的97．9％；兔MT－2以含锌、镉为主。采用SRXRF技术可实现蛋白电泳分离的原位测定。

简介：