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  • 简介:Progress of IMP Laser Ion SourceProgressofIMPLaserIonSource¥ZhaoZhizheng;YangYongfengandCaiXichenLotsOfprogressesofIMPlaserio...

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  • 简介:Experimentshaveshownthattheionenergyobtainedbylaser–ionaccelerationcanbeoptimizedbychoosingeithertheappropriatepulsedurationortheappropriatetargetthickness.WedemonstratethatthisbehaviorcanbedescribedeitherbythetargetnormalsheathaccelerationmodelofSchreiberetal.orbytheradiationpressureaccelerationmodelofBulanovandcoworkers.Thestartingpointofourconsiderationsisthattheessentialpropertyofalasersystemforionaccelerationisitspulseenergyandnotitsintensity.Maybesurprisinglyweshowthathigherionenergiescanbereachedwithreducedintensities.

  • 标签: laser–ion ACCELERATION RELATIVISTIC LASER PLASMA INTERACTION
  • 简介:Anionbeamhastheuniquefeatureofbeingabletodeposititsmainenergyinsideahumanbodytokillcancercellsorinsidematerial.However,conventionalionacceleratorstendtobehugeinsizeandcost.Inthispaper,afutureintenselaserionacceleratorisdiscussedtomakethelaser-basedionacceleratorcompactandcontrollable.Theissuesinthelaserionacceleratorincludetheenergyefficiencyfromthelasertotheions,theionbeamcollimation,theionenergyspectrumcontrol,theionbeambunching,andtheionparticleenergycontrol.Inthestudy,eachcomponentisdesignedtocontroltheionbeamqualitybyparticlesimulations.Theenergyefficiencyfromthelasertoionsisimprovedbyusingasolidtargetwithafinesub-wavelengthstructureoranear-critical-densitygasplasma.Theionbeamcollimationisperformedbyholesbehindthesolidtargetoramulti-layeredsolidtarget.Thecontroloftheionenergyspectrumandtheionparticleenergy,andtheionbeambunchingaresuccessfullyrealizedbyamulti-stagelaser–targetinteraction.

  • 标签: INTENSE SHORT-PULSE LASER LASER ION ACCELERATION
  • 简介:In2016,theresearchanddevelopmentoflaserionsourcesweremainlycontributedtopromotetheperformanceoftheionsource,suchastoprolongthepulsedurationoftheionbeam,torealizetherepetitionrateoperationmodeoftheionsource.Inaddition,theproductionofhighlychargedmetallicionbeamsfromanECRionsourcewithlaserablationplasmainjectionwasalsoinvestigatedpreliminarily.Theconfinementoflaserproducedplasmawithasolenoidwasstudied.Forthispurpose,a1.5m-longsolenoidwasinstalledontheexpansionstageofthelaserionsource.

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  • 简介:有一根激光横梁的一个单个二水平的二模式的套住的离子的相互作用理论上被学习了。用单一的转变的申请,没有执行羔羊Dicke近似,这个量系统的一个分析答案被获得了。在这个系统,纠缠的排水量Fock状态被生产。

  • 标签: 捕获离子 单一转化 Lamb-Dicke限制值 激光束
  • 简介:Modernchirpedpulseamplificationlasersystemswithcontinuouslyimprovingcontrollabilityandincreasingpowerareabouttoreachintensitiesofupto10~(22)Wcm~(-2)andhaveproventheirpotentialtoaccelerateionsoutofplasmatoseveraltenspercentofthespeedoflight.Forenablingapplication,oneimportantstepistoincreasetherepetitionrateatwhichionbunchesareatthedisposal.Inparticular,techniquesusedsofarforthinfoiltargetproductioncanrequireseveraldaysofpreparingreasonableamountsforasinglecampaign.Inthispaperwedescribethereasonablydropletmethodwhichwehavetestedandimprovedsothattheemergingfoilswiththicknessesofafewnanometresuptomicrometrecanbeusedastargetsforlaserionacceleration.Theirqualityandperformancecancompetewithsofaremployedtechniquestherebyenablingtheproductionofhundredsoftargetsperday.

  • 标签: 目标设计和制造和物质的超短波的脉搏激光相互作用
  • 简介:Theeffectsofionmotiononthegenerationofshort-cyclerelativisticlaserpulsesduringradiationpressureaccelerationareinvestigatedbyanalyticalmodelingandparticle-in-cellsimulations.Studiesshowthattherearpartofthetransmittedpulsemodulatedbyionmotionissharpercomparedwiththecaseoftheelectronshutteronly.Inthisstudy,theionsfurthermodulatetheshort-cyclepulsestransmitted.A3.9fslaserpulsewithanintensityof1.33×1021Wcm-2isgeneratedbyproperlycontrollingthemotionsoftheelectronandioninthesimulations.Theshort-cyclelaserpulsesourceproposedcanbeappliedinthegenerationofsingleattosecondpulsesandelectronaccelerationinasmallbubbleregime.

  • 标签: radiation pressure acceleration short-cycle PULSES PARTICLE-IN-CELL
  • 简介:Theionsaturationcurrentisveryimportantinprobetheory,whichcanbeusedtomeasuretheelectrontem-peratureandthefloatingpotential.Inthiswork,theeffectsofenergeticionsontheionsaturationcurrentarestudiedviaparticle-in-cellsimulations.Itisfoundthattheenergeticionsandbackgroundionscanbetreatedseparatelyasdifferentspecies,andthevsatisfytheirindividualBohmcriterionatthesheathedge.

  • 标签: ENERGETIC ION EFFECTS the ION SATURATION
  • 简介:Theself-diffusionofEu^3+ioninporousresinsD72andD751wasstudiedbyisotopeexchangereaction.ApplyingKataoka'sbidisperseporemodel,theintraparticleeffectivediffusivityDewereresolvedintoasoliddiffusivityDgandamacroporediffusivityDp.TheexperimentsshowthatDe.DpandDgallincreasewiththeincreaseofreactiontemperature;theresponseDpandDgofD751resinissmallerthanthatofD72resin;thediffusivityofEu^3+ioninsolutionislargerthanDp,whichleadstotheconclusionthatthediffusionofionintheporeofresincannotcompletelybeequaltothatinsolution.

  • 标签: 稀土金属离子 多孔物质离子 树脂
  • 简介:SG-ⅢlaserfacilityisnowthelargestlaserdriverforinertialconfinementfusionresearchinChina.Thewholelaserfacilitycandeliver180kJenergyand60TWpowerultravioletlaserontotarget,withpowerbalancebetterthan10%.WereviewthelasersystemandintroducetheSG-Ⅲlaserperformancehere.

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  • 简介:InthispaperwereviewtheprovisionofthelaserdiagnosticsthatareinstalledontheVulcanlaserfacility.Wewillpresentstrategiesfordealingwiththeenergyofhighenergysystemsandwithwaysofhandlingthebeamsizesofthelasers.Wepresentdatacapturedduringtypicalexperimentalcampaignstodemonstratetheirreliabilityandvariationinshottoshotvalues.

  • 标签: CALORIMETER HIGH power LASER LASER DIAGNOSTICS
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  • 简介:Wewillreviewsomeoftherequirementsforalaserthatwouldbeusedwithalaserfusionenergypowerplant,includingfrequency,spatialbeamsmoothing,bandwidth,temporalpulseshaping,efficiency,repetitionrate,andreliability.Thelowestriskandoptimumapproachusesakryptonfluoridegaslaser.Adiode-pumpedsolid-statelaserisapossiblecontender.

  • 标签: LASER FUSION ENERGY
  • 简介:Ultrashortlaserpulsesareusedtocreatesurfacestructuresonthin(25μm)silicon(Si)wafers.Scanningthewaferwithagalvanometricmirrorsystemcreateslargehomogeneouslystructuredareas.Thevarietyofstructureshapesthatcanbegeneratedwiththismethodisexemplifiedbytheanalysisofshape,heightanddistanceofstructurescreatedintheambientmediaairandisopropanol.Astudyofthecorrelationbetweenstructureheightandremainingwaferthicknessispresented.Thecomparativelyeasymanufacturingtechniqueandthestructurevarietythatallowsforcustom-tailoredtargetsshowgreatpotentialforhighrepetitionrateionaccelerationexperiments.

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