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         ParametersandCharacteristicsofMultiflyersDrivenbyLaser
         QIN Wenzhi,WANG Meng,ChenQingchou,JIANG Xiaohua
         (TheInstituteofChemicalMaterials,ChinaAcademyofEngineeringPhysics,Mianyang621999,China)

         Abstract:Inlaserdrivenflyertechnology,theefficiencyoflaserandthevelocityofflyerscanbeimprovedbytheusingofmulti
         flyers.Inordertoobtaintheinfluenceofeachlayerinmultiflyerwithdifferentmaterialsandthicknessonthevelocityofflyers,
         multiflyerswithdifferentparameterswerepreparedbyTi,C,Al O andAl.ThemultiflyersweredrivenbyNeodymiumYttrium
                                                           2
                                                             3
         Aluminium GarnetLaserlasersystem intheenergyrangebetween200mJand300mJ.Thevelocityofmultiflyersweretestedby
         PhotonicDopplerVelocimetry(PDV).Resultsshow thatthevelocityofmultiflyerswithabsorptionlayer(0.15μ m,Ti)increa
         ses110% comparedtosingleflyer,andthevelocityofmultiflyerwithinsulationlayer(0.3μ m,Al)andablationlayer(1.0μ m,
         Al O )increases41% comparedtosingleflyer.Energyutilizationandacceleratedistanceofdifferentmultiflyerswereanalyzed.
          2  3
         Itindicatesthatthevelocityoflaserdrivenmultiflyerscanreach90% ofmaximum velocityat0.02μ s,andreachamaximum at
         0.08μ s.
         Keywords:multiflyer;PhotonicDopplerVelocimetry(PDV);multiflyervelocity;laserdriven
         CLCnumber:TQ565;O38             Documentcode:A                DOI:10.11943/j.issn.10069941.2015.02.013












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