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简介：Inthepresentwork,theLEDchipwasirradiatedbyusing59.6MeVNionsinaterminalchamberoftheSector-focusedcyclotron(SFC)intheNationalLabortaryofHeavy-ionAcceleratorsinLanzhou.The63MeVNionspenetratedthroughagoldfoilandscatteredinalargearea.Theenergyofionwasreducedto59.6MeVafterscatteringofthegoldfoil.TheLEDwasprovidedbytheSemiconductorLightingCenterinInstituteofSemiconductorinBeijing.TheluminencesoftheLEDbefore/afterirradiationweretestedthroughaintegratingsphereinSemiconductorLightingCenterinInstituteofSemiconductorinBeijing.Theluminancewastestedunderacurrentof350mA.Fig.1showstherelationshipbetweentheluminencesandtheirradiationfluences.Theirradiationledto

简介：Thebaryonspectrumandthebaryoncouplingsaretwoofthemostimportantissuesinhadronicphysicsandtheyareattractingmuchattention.Bothontheexperimentalandtheoreticalsides,thenucleonexcitedstatesbelow2.0GeVhavebeenextensivelystudied[1].However,thecurrentinformationforthepropertiesofstatesaroundorabove2.0GeVisscarce.Ontheotherhand,inthisenergyregion,manytheoreticalapproacheshavepredictedmissingNstates,whichhavenotbeensofarobserved.Hence,thestudyofthepossibleroleplayedbythe2.0GeVregionnucleonresonancesintheavailableaccuratedataistimelyandcouldshedlightintothecomplicateddynamicsthatgovernsthehighexcitednucleonspectrum.

简介：LargeapertureNd:phosphatelaserglassisakeyopticalelementforaninertialconfinementfusion(ICF)facility.N31,onetypeofneodymiumdopedphosphateglasses,wasdevelopedforhighpeakpowerlaserfacilityapplicationsinChina.ThecompositionandmainpropertiesofN31glassaregiven,togetherwiththoseofLHG-8,LG-770,andKGSS-0180Nd:phosphatelaserglasses,fromHoyaandSchott,andfromRussia.Thetechnologiesofpotmelting,continuousmelting,andedgecladdingoflargesizeN31phosphatelaserglassarebrieflydescribed.ThesmallsignalgainprofilesofN31glassslabsfrombothpotmeltingandcontinuousmeltingatvariousvaluesofthepumpingenergyofthexenonlamparepresented.N31glassischaracterizedbyastimulatedemissioncrosssectionof3.8×10-20cm2at1053nm,anabsorptioncoefficientof0.10–0.15%cm-1atlaserwavelength,smallresidualstressaroundtheinterfacebetweenthecladdingglassandthelaserglass,opticalhomogeneityof～2×10-6ina400mmaperture,andlaserdamagethresholdlargerthan42J/cm2fora3nspulsewidthat1064nmwavelength.

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简介：Inthispaper,theconductionband-edgenon-parabolicity(NP)andthecircularcross-sectionradiuseffectsonhydrogenicshallow-donorimpurityground-statebindingenergyinzinc-blende(ZB)InGaN/GaNcylindricalQWWsarereported.Thefinitepotentialbarrierbetween(In,Ga)NwellandGaNenvironmentisconsidered.Twomodelsoftheconductionband-edgenon-parabolicityaretakingintoaccount.Thevariationalapproachisusedwithintheframeworkofsinglebandeffective-massapproximationwithone-parametric1S-hydrogenictrialwave-function.ItisfoundthatNPeffectismorepronouncedinthewireofradiusequaltoeffectiveBohrradiusthaninlargeandnarrowwires.Moreover,thebindingenergypeakshiftstonarrowwireunderNPeffect.Agoodagreementisshowncomparedtothefindingsresults.

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简介：InthispaperweusedMOF-5andCu3(BTC)2toseparateCO2/CH4andCH4/N2mixturesunderdynamicconditions.Bothmaterialsweresynthesizedandpelletized,thusallowingforameaningfulcharacterizationinviewofprocessscale-up.ThematerialswerecharacterizedbyX-raydiffraction(XRD)andscanningelectronmicroscopy(SEM).Byperformingbreakthroughexperiments,wefoundthatCu3(BTC)2separatedCO2/CH4slightlybetterthanMOF-5.BecausethecrystalstructureofCu3(BTC)2includesunsaturatedaccessiblemetalsitesformedviadehydration,itpredominantlyinteractedwithCO2moleculesandmoreeasilycapturedthem.Conversely,MOF-5withasuitableporesizeseparatedCH4/N2moreefficientlyinourbreakthroughtest.