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153Vol.15,No.320033HIGHPOWERLASERANDPARTICLEBEAMSMar.,2003:100124322(2003)0320262205X1,2,3,1(1.,610065;2.,610054;3.,610041):(ICECM)ICECM,,-,1.5kA1MV,200MW280GHz:(ICECM);;;;:TN128:A10,,,2npnbnp(nb,np,),,,(Ion2Channel),D.H.WhittumSessler(ICL)[1];,C.J.Tang,(ICECM)[24];ICECM,C.J.Tang,ICECM[5],ICECM,ICECM,:,[5],ICECM1ICECMFig.1StructureofICECM1ICECM1III,2IITEmn,mm(r,)=CmnJmn(Kmnr)ejm(1):Cmn;Jm(Kmnr)mBessell;Et(r,,z,t)=A(z,t)emn(r)e-j0t(2):emn(r,)=z¨tmn;0;A(z,t),A(z,t)A(z,t)=a(t)e-j(t)f(z)(3):a(t)(t),f(z),f(z)=exp[-K2z(z-L)2](4)X:2002205220;:2002212210:(81007):(19542),,,,;E2mail:542160287@sina.com©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.:;L[5],ICECMdadt=-c24N0s(t)-02Qa(t)(5)ddt=-20-2r20-jc204Na(t)u(t)(6):r;c;N=L0|f(z)|2dz;Q;s(t)u(t)[6],[5]s(t)=-4I0cmnL0ptpzf(z)KmnJ(Kmnr)cos0dzu(t)=-4I0cmnL0ptpzf(z)KmnJ(Kmnr)sin0dz(7):=0t+ºm,00ptpzI0,=t+(t)(8)=(|e|2ni/20m00)1/2(9):;0;m0e;;nip,EB,dpdt=-|e|(E+1m0pB)(10)(2),(5)(6)ICECM2[3],ICECM,,ICECMEi=Eie-j(t-kzz)ezBi=0(11)V,(10)m0cddt=-|e|EV(12)m0(vz0d1dt+0dv(1)pdt)=-|e|Eie-j(t-kzz)(13)m0c2(d1/dt)=-|e|vz0Eie-j(t-kzz)(14),v(1)p1dv(1)p/dt=-j(i-kivz)v(1)p(15)(13)(14)v(1)p=j|e|(1+202)m030(i-kivz)Eie-j(it-kiz)(16)=v/cEszfz=|e|Esphje-j(t-kzz-)(17)ph=vph/c(17),v(1)z=j|e|(1+202)m030(i-kivz-c)phEse-j(t-kzz-)(18)3623:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,55t+¨(v)=0(19)(55t+vz055z)1z=-0¨(v(1)p+v(1)z)(20):1z,kz=ki=i+p/(2)1/2(21)p=(|e|2ni/0m0)1/2(16),(18)(20)1z=-j0|e|ki(1+202)30m0(i-kiz)(Ei-phEs)e-j(it-kiz)(22),0,¨Ei=-|e|1z0(23)Ei=-jn0e2ki(1+202)030m0(i-kiz)(Ei-phEs)e-j(it-kiz)(24)Ei=220220-2phEs(25)2=(1+202)/20(26)fzfifi=[2e/(2-2e)]fz(27)fi,2e=20(1+202)/20(28)zFzFz=fz+fi=fz(29),,=2/(2-2e)(30),32(5),(6),z500,800,2ICECM:ICECM160MW,210.67%4ns(29)z,1ICECM,31Table1ParametersofchannelstructureandelectronbeammodelcutfrequencychannelradiuschannellengthQiondensityp/pzI0acceleratevoltageTE1337.5GHz10.87mm32mm2006.81013cm-31.41.5kA1MV46215©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.Fig.2NonlinearprocessofICECMwithouttheinfluencebyplasmawave2ICECMFig.3NonlinearprocessofICECMwiththeinfluencebyplasmawave3ICECM3,ICECMPout=200MW,213.33%3ns2,2,,,,,,2,2,,,2,,ICECM,,ni=pt/pz,ICECM222%,ICECM4ICECM,ICECM,,2,,ICECM,ICECM,,,280GHz200MWICECM,,,2,5623:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.:[1]WhittumDH,SesslerAM.Ion2channellaser[J].PhysicalReviewLetters,1990,64(21):25112514.[2],,.[J].,1995,14(6):407412.(TangCJ,LiuPK,LiuSG.Ion2chan2nelelectroncyclotronmaser.JournalofInfraredandMillimeterWaves,1995,14(6):407412)[3]TangCJ,LiuPK,LiuSG.Electromagneticinstabilityinanion2channelelectroncyclotronmaser[J].JPhysDApplPhys,1996,29:9094.[4],,,.[J].,1997,46(5):892896.(LiuPK,XiongCD,LiuSG,etal.AnewplasmamasersystemIonchannelelectroncyclotronmaser.ActaPhysicaSinica,1997,46(5):892896)[5],.[J].,2002,51(6):12561261.(TangCJ,QianSJ.Thenonlineartheoryofcyclotronelectronstimulatedradiationinanion2channel.ActaPhysicaSinica,2002,51(6):12561261)[6],,.EMW2FEL[J].,1993,23(7):766772.(TangCJ,YangZH,LiuSG.Self2consistentnonlineartheoryofhigh2powergyrotronpumpforEMW2FEL.ChineseSciences,1993,23(7):766772)PlasmawaveeffectofionchannelelectronbeamcyclotronmaserTANGChang2jian1,GONGYu2bin2,QIANShang2jie3,ZHANGHong2run1(1.DepartmentofAppliedPhysics,SichuanUniversity,Chengdu610065,China;2.CollegeofPhysicalElectronics,UniversityofElectronicsScienceandTechnology,Chengdu610054,China;3.SouthwestPhysicsInstitutionofNuclearIndustry,Chengdu610041,China)Abstract:TheplasmawavenonlineareffectofIon2ChannelElectronCyclotronMaser(ICECM)isinvestigated.Usingthesemethodsoffluidtheoryandselfnonlineartheory,themicro2mechanisminICECMareanalyzed.Studiesfindthatthelongitudinalfocusisintensifiedandthebeam2waveinteractefficiencyisremarkablyincreased.Numericalcalculationsshowthat,formiddleiondensityandtheelectronbeamof1.5kAand1MV,thescatteringwavefrequencyandtheoutputpowerinICECMsystemcanachieve280GHzand200MWrespectively.Keyword:Ionchannelelectronbeamcyclotronmaser(ICECM);Plasma;Maser;Fluidtheory;Nonlineartheory66215©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.