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ParametersandCharacteristicsofMultiflyersDrivenbyLaser
QIN Wenzhi,WANG Meng,ChenQingchou,JIANG Xiaohua
(TheInstituteofChemicalMaterials,ChinaAcademyofEngineeringPhysics,Mianyang621999,China)
Abstract:Inlaserdrivenflyertechnology,theefficiencyoflaserandthevelocityofflyerscanbeimprovedbytheusingofmulti
flyers.Inordertoobtaintheinfluenceofeachlayerinmultiflyerwithdifferentmaterialsandthicknessonthevelocityofflyers,
multiflyerswithdifferentparameterswerepreparedbyTi,C,Al O andAl.ThemultiflyersweredrivenbyNeodymiumYttrium
2
3
Aluminium GarnetLaserlasersystem intheenergyrangebetween200mJand300mJ.Thevelocityofmultiflyersweretestedby
PhotonicDopplerVelocimetry(PDV).Resultsshow thatthevelocityofmultiflyerswithabsorptionlayer(0.15μ m,Ti)increa
ses110% comparedtosingleflyer,andthevelocityofmultiflyerwithinsulationlayer(0.3μ m,Al)andablationlayer(1.0μ m,
Al O )increases41% comparedtosingleflyer.Energyutilizationandacceleratedistanceofdifferentmultiflyerswereanalyzed.
2 3
Itindicatesthatthevelocityoflaserdrivenmultiflyerscanreach90% ofmaximum velocityat0.02μ s,andreachamaximum at
0.08μ s.
Keywords:multiflyer;PhotonicDopplerVelocimetry(PDV);multiflyervelocity;laserdriven
CLCnumber:TQ565;O38 Documentcode:A DOI:10.11943/j.issn.10069941.2015.02.013
CHINESEJOURNALOFENERGETICMATERIALS !"#$ 2015% & 23' & 2( (173-177)