简介:TheobjectiveoftheApollonprojectisthegenerationof10PWpeakpowerpulsesof15fsat1shot/minute.InthispapertheApollonfacilitydesign,thetechnologicalchallengesandthecurrentprogressoftheprojectwillbepresented.
简介:ThedemofacilityofchinaADSinjectorIIwasinstalledinthetunnelin2014.Theon-sitelayoutofdemofacilityisshownintheFig.1.ThedemofaclitymainlyincludesECRIS,LEBT,RFQacclerator,MEBTandTCM6.TheTCM6iscomposedbysixSCHWRcavity,sixSCsoleniodsandfiveBPMs.TheTCM6willbetheprototypeforthefuture2025MeVCADSsuperconductinglinac.ThebeamcommissioningofCADSInjectorIIstartedinJune2015.Itmainlyconsistsofthreesteps.
简介:Inthispaper,wereportedamultiwavelengthpassivelyQ-switchedYb3+:GdAl3(BO3)4solid-statelaserwithtopologicalinsulatorBi2Te3asasaturableabsorber(SA)forthefirsttime,tothebestofourknowledge.Bi2Te3nanosheetswerepreparedbythefacilesolvothermalmethod.TheinfluenceofthreeBi2Te3densitiesonthelaseroperationwascompared.Themaximumaverageoutputpowerwasupto57mWwithapulseenergyof511.7nJ.Theshortestpulsewidthwasmeasuredtobe370nswith110kHzpulserepetitionrateand40mWaveragepower.Thelaseroperatedatthreewavelengthssimultaneouslyat1043.7,1045.3,and1046.2nm,ofwhichthefrequencydifferenceswerewithintheterahertzwaveband.OurworksuggeststhatsolvothermalsynthesizedBi2Te3isapromisingSAforsimultaneouslymultiwavelengthlaseroperation.
简介:TheZ=56bariumnucleirepresentoneofthebestexampleofanisotopicchaintoexploretheevolutionofquadrupoledeformationastheneutronnumberdecreases.Theneutron-deficientbariumisotopeswithmassnumberArangingfrom120to130couldbeeasilyproducedbytheheavy-ionfusionevaporationreactions,andthushavebeenwellstudiedinrayspectroscopyexperiments.
简介:AsimpleandefficientcascadeMichael/cyclizationreactionof3-aminoindolin-2-oneswithenones/enalswasidentifiedforthesynthesisofpotentiallybiologicallyactive3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles],usingDBUasanefficientcatalystandethyleneglycolasanenvironmentallybenignsolvent.Morediverse3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles]analoglibrarieswerepreparedingoodyields(upto97%).Thestructureof3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles]wasconfirmedbymassspectrometryanalysis,NMRanalysisandsinglecrystalX-raydiffraction.Themainadvantagesofthismethodincludetheavailabilityofstartingmaterials,simpleexperimentaloperation,shortreactiontime,aswellashighyieldsobserved.