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简介：Asingle-particlemicrobeamfacilityhasbeenconstructedattheLaboratoryofIonBeamBioengineering(LIBB),ChineseAcademyofSciences.Thesystemisdesignedtodeliverthedefinednumberofhydrogenions,coveringarangeofenergyfrom1.0to3.5MeV,intoanareasmallerthanthenucleiofindividuallivingcells.AccuracyoftheparticledetectionsystemandthecelltargetingsysteminthefacilityhasbeenassessedusingCR39(nucleartrackdetector)for2.3MeVprotons.Theresultsdemonstratethattheparticledetectionefficiencyisabove98%,andtheoveralltargetingaccuracyofthemicrobeamislimitedwithin3μmformorethan90%hits.

简介：我们在场一9???蘜？？

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简介：WejoinedtheSEASTAR(ShellEvolutionAndSearchfor2+energiesAtRIBF)collaborationatRIKENandareanalyzingthedataofn-richVandMnisotopeswithN40.Three-raysineachof63;65;67Mnareidentified.The??coincidencerelationshipsarebeinganalyzedforestablishingtheirlevelschemes.TheprogressinthedataanalysisispresentedinRef.[1].

简介：Wereportanovelapproachtoobtainingaclassicalblue-greenexcitableCaS:Eu2+phosphorwithdesiredredemissionbymicrowave(MW)firingprocedureintheabsenceofaddingelementalsulphur.ThedisturbingeffectofMWelectromagneticfieldondecompositionofCaSO4intoCaSactivatedbyeuropiumisdistinctlyobservedtogivepurehostphasewithoutaddinganyelementalsulphurandcarbon.ThehostphaseevolutionisobservedtobehighlydependentonthevariationofappliedMWpowerfromX-raydiffraction(XRD)patternsandthecorrespondingphotoluminescence(PL),andamaximumPLintensityat1100WofMWpowerisacquiredfortheobtainedpurerhostphase.Thenon-thermalandnon-equilibriumeffectsbyMWarerevealedtocorrelatewiththeinteractionbetweenpolarstructureofthehostandappliedelectromagneticfield.Theresultsdemonstrateanoptionalproceduretopreparethisred-emittingphosphorinaneffective,environment-friendlyandscalableapproachforphosphorproductionintheapplicationofbio-illuminationforplantcultivationandartificialphotosynthesis.

简介：Tomeettherequirementoflong-timeacquisitionwithoutinterruptionsfortheplannednucleardecayexperimentsatCSRe,anewdataacquisitionsystemhasbeensuccessfullydevelopedin2016.DuringthebeamtimeinDec.2016,ournewsystemhasbeenrunningstablywithoutanyproblemsandcontinuouslyacquiringhundredsofdatawithoutanybreaks.Thewholesystemisbasedonaspectrumanalyzer(R&SFSVR7)andanIQrecorder(R&SIQR100).BothofthemareconnectedtoaserverviaEthernet.Thespectrumanalyzeracquiresthetime-domaininformationinthefrequencyrangeofinterestfromtheSchottkyresonator.TheIQrecordercollectstheinformationfromtheanalyzerandpacksitintodata.Oncethedatahavebeenentirelytransferredtotheserver,itwillimmediatelyberemovedfromIQrecorder.Thehigh-volumesolid-statedrive(1TB)ofIQrecorderallowsforavirtuallyunlimitedsizeofacquiredlestobestoredinpractice.Besides,inordertobypasstheunreliabletriggersystemofIQrecorder,webuiltanindependenttriggersystemwithamicrocontroller(ArduinoYun)totranslatetheTTLsignaltonetworkcommands.

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简介：第9路已基本建成并投入试运行，现能输出脉宽2ns，能量1．5kJ的倍频激光，开始用作X光背光驱动源。

简介：Thestudyofnucleonresonanceisanimportanttopicinhadronphysics.Themostimportantwaytostudythenucleonresonancesisthecollisionofthephotonandnucleon.Uptonow,theknowledgeaboutthenucleonresonancesaround2GeVisstillscarce.Recently,theCLASCollaborationatJeffersonNationalAcceleratorFacilityreleasedtheirexclusivephotoproductioncrosssectionsfortheΛ(1520),Σ0(1385)andΛ(1405)forenergiesfromnearthresholduptoacenterofmassenergyWof2.85GeVwithlargerangeoftheKproductionangle[1].SincethethresholdforthephotoproductionofΛ(1520)isabout2.01GeV,thenewexperimentaldatawithhighprecisionreleasedbytheCLASCollaborationprovideanopportunitytostudythenucleonresonancesabove2GeV.

简介：PhasescanapplicationisveryimportantsoftwareforADSLinacbeamtuning.Thescan/measuretoolsinOpenXALwasusedpreviously.Inordertoimprovethescanningefficiency,anewphasescanapplicationwasdeveloped.ThePythonwasselectedastheprogramminglanguagetomakethedevelopmenteasier.

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简介：Basedonthedensity-functionaltheory,thispaperstudiesthegeometricandmagneticpropertiesofTinO(n=1-9)clusters.TheresultinggeometriesshowthattheoxygenatomremainsonthesurfaceofclustersanddoesnotchangethegeometryofTinsignificantly.Thebindingenergy,second-orderenergydifferenceswiththesizeofclustersshowthatTi7Oclusterisendowedwithspecialstability.ThestabilityofTinOclustersisvalidatedbytherecenttime-of-flightmassspectra.ThetotalmagneticmomentsforTinOclusterswithn=1-4,8-9areconstantwith2anddroptozeroatn=5-7.Thelocalmagneticmomentandchargepartitionofeachatom,andthedensityofstatesarediscussed.ThemagneticmomentoftheTinOisclearlydominatedbythelocalized3delectronsofTiatomswhiletheoxygenatomcontributesaverysmallamountofspininTinOclusters.

简介：Ａ　Ｎｅｗ　Ｅ３　Ｔｒａｎｓｉｔｉｏｎ　ｆｒｏｍ　９＋　Ｉｓｏｍｅｒ　ｉｎ　１４４Ｐｍ　ＮｕｃｌｅｕｓＡＮｅｗＥ３Ｔｒａｎｓｉｔｉｏｎｆｒｏｍ９＋Ｉｓｏｍｅｒｉｎ１４４ＰｍＮｕｃｌｅｕｓ￥ＺｈａｎｇＹｕｈｕ；Ｙ．Ｇｏｎｏ；ＺｈａｏＱｉｎｚ...

简介：大学基础物理规划(IUPP)的宗旨是改革各种含微积分物理课程。本规划是由美国教师协会、美国物理研究所、美国物理学会支持的。IUPP由（美)国家科学基金科学工程和数学办公室提供资金。

简介：研制成功的6MeV高能工业CT集成检测系统采用磁控管驱动的6MeV射频加速器作为X射线源，成像系统与9MeV高能工业CT相同，扫描方式采用三维锥束扫描。主要技术指标与9MeV工业CT系统接近，其空间分辨率也达到21p／mm（10％的调制度下）。

简介：Caspasesfunctionasacomponentincellsignalingpathwayswhichareinvolvedineventssuchasapoptosis,cellgrowthanddifferentiation.Caspase-9(CASP9)isamemberoftheintrinsicapoptosispathway,whichisactivatedasaresultofmitochondrialdamageandcytochromecrelease.Onceactivated,CASP9cleavesandactivatestherelevantcaspases,suchascaspase-3,thattargetavarietyofcellularcomponentstodismantleacellandpresentthefragmentsforphagocytosis[1].

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