激光等离子体推进在火箭推进技术领域的应用前景

31,­12(1100080)(2()100083).,.,.,,PROSPECTIVEAPPLICATIONOFLASERPLASMAPROPULSIONINROCKETTECHNOLOGYLUXin1,­ZHANGJie1LIYing2Jun2(1LaboratoryofOpticalPhysics,InstituteofPhysics,ChineseAcademyofSciences,Beijing100080,China)(2DepartmentofPhysics,ChinaUniversityofMining&Technology,Beijing100083,China)AbstractInterestinlaserplasmapropulsionisgrowingintensively.TheinteractionofhighintensityshortlaserpulseswithmaterialscanproduceplasmaexpansionwithavelocityofhundredsofkmPs.Thespecificimpulseofabla2tivelaserporpulsioncanbemanytensoftimesgreaterthanthatofchemicalrockets.Thedevelopmentandpotentialapplicationoflaserplasmapropuslsionarediscussed.Keywordspropulsion,laserplasma,specificimpulse3(:10004015,10176034,19825110)2002-07-25,2002-08-13­.E2mail:[e-mail]11997,,,20.,.,,.,.?.20026AppliedPhysicsLetters,.,.,..,.20,,1903():v=vjetln(m0/m).,m0vjet,mv.,,.,.,.697.4kmPs,,400s.,-().:mdv=vjetdm,,dm,dm(),-,vjet/.,119662JPg,vjet=4kmPs,-31310-5NsPJ,313dynesPJ,..,,.,..2,..,,.,,.,,,.:;.,,.,,,.,.,,,.,1972,,1GW110[1].[24].1974,,3100sCO2,500900sdynesPJ-[2],,110G106J,350Hz.,,.,[5,6],,,.211[7].,.,14cm,50g,1.,.,1000J,30s,10Hz.20m.2(a),2(b).,.3,-,1216dynesPJ.,200070m.212,79731(2002)121(a)(b),(c)2(a);(b)3,,,.,,.,1013WPcm2,/.,.,[8,9].51013WPcm2100ps532nm,(4)(5)[9].,,.44,,2104s,200kmPs,.18kmPs,614,,40kg.89752002[10],.011012g,011mm.,500dynesPJ-.,.,,1015W,?.3.-.,,,,,.....,,,.,,...,,1mCO2.,,,[11].,,.4,.,.,,,.[1]KantrowitzA.AstronauticaandAeronautica,1972,10(5):74[2]PirriAN,MonslerMJ,NebolsinePE.AIAAJ,1974,12(9):1254[3]SimonsGA,PirriAN.AIAAJ,1977,15(6):385[4]RichardJC,MoralesC,MyraboLN.AIAAPaper8822970,1988[5]AgeevVPetal.ActaAstronautica,1980,7:79[6]AzechiHetal.Jpn.J.Appl.Phys.Part2,1981,20:L477[7]MyraboLNetal.AIAA9821001,AerospaceSicencesMeeting&Exhibit,36th,1998[8]PakhomovAV,GregoryDA.AIAAJ.,2000,38(4):725[9]ThompsonMSetal.AblativeLaserPropulsion:TheStudyofSpe2cificImpulseandRelatedDynamicCharacteristicsofElementaryPropellants.ProceedingsofNASAJPLPMSFCPUAH12thAnnualAdvancedSpacePropulsionWorkshop.Huntsville,Alabama:Uni2versityofAlabamainHuntsville,2001[10]YabeTetal.Appl.Phys.Lett.,2002,80:4320[11]YangHetal.Phys.Rev.E,2001,65:01640699731(2002)12