简介:岁月是女人的天敌?年逾80的英国超模达芙妮·沙尔菲却成功地突围了时间给她设定的格局,以优雅脱尘的姿态完胜众多佳丽,成为著名杂志《名利场》的头号模特。只要你看过她为杂志拍摄的照片,就会被她的美瞬间触动。简直是一个传奇。但,你有没有想过,其实,光阴流逝只不过是在考验你的心态。当你的双颊绯红,弯眉巧笑,你站在青春
简介:JUNA(JinpingUndergroundlaboratoryforNuclearAstrophysics)isplaningtomeasurethe13C(α,n)16OandsomeotherimportantreactionsatorclosetostellarenergiesusingintenseheliumbeamoutofanECRdrivenacceleratorinJinpingUndergroundlaboratory[1].Deuteriumimpurityinionsourcewillproducessignificantamountofneutrons,limitingthebackgroundlevel.Tocontrolthedeteriumimpurity,wehavedevelopedamethodtomeasurethedeuteriumimpuritywithinHeliumbeamusingthed(d,p)treaction.
简介:In2016,theresearchanddevelopmentoflaserionsourcesweremainlycontributedtopromotetheperformanceoftheionsource,suchastoprolongthepulsedurationoftheionbeam,torealizetherepetitionrateoperationmodeoftheionsource.Inaddition,theproductionofhighlychargedmetallicionbeamsfromanECRionsourcewithlaserablationplasmainjectionwasalsoinvestigatedpreliminarily.Theconfinementoflaserproducedplasmawithasolenoidwasstudied.Forthispurpose,a1.5m-longsolenoidwasinstalledontheexpansionstageofthelaserionsource.