双谐振腔长脉冲相对论返波振荡器研究-豆柴文库

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双谐振腔长脉冲相对论返波振荡器研究
Abstract
Thispaperpresentsadetailedstudyonthedoubleharmoniccavitylongpulserelativisticbackwardwaveoscillator(DHCLP-RBWO).ThebasicprincipleandoperatingmechanismofDHCLP-RBWOareanalyzed.TheconstructionanddesignofDHCLP-RBWOarediscussed,andatheoreticalanalysisofitsessentialparametersismade.ThispaperalsocomparestheDHCLP-RBWOwithothertypesofRWBOsanddiscussesitspotentialapplicationsinvariousfields.
Introduction
Therelativisticbackwardwaveoscillator(RBWO)isatypeofhigh-powermicrowavesourcethatconvertsthekineticenergyofhigh-speedelectronsintoelectromagneticenergybyusingaspecialinteractionbetweentheelectronbeamandaslow-wavestructure(SWS).RBWOshavebeenwidelyusedinvariousfields,suchasmilitarycommunication,microwaveheating,andplasmaphysics.
Doubleharmoniccavitylongpulserelativisticbackwardwaveoscillator(DHCLP-RBWO)isanewtypeofRBWO,inwhichtheSWSconsistsoftwoidenticalcircularresonantcavitieswithacommonaxis.Theresonantfrequenciesofthetwocavitieshaveaspecificrelationship,whichgeneratesasecond-harmonicfieldintheinteractionregion.TheuseofdoubleharmoniccavitiesnotonlyincreasestheinteractionimpedanceoftheSWS,butalsoimprovestheoutputefficiencyofthedevice.
PrincipleofDHCLP-RBWO
TheDHCLP-RBWOconsistsofanelectrongun,amagneticfocusingsystem,adoubleharmoniccavitySWS,andanoutputwaveguide.Theelectronbeamgeneratedbythegunisfocusedandacceleratedbyamagneticfield,andtheninjectedintotheSWSthroughacouplinghole.TheelectronbeaminteractswiththeelectromagneticfieldoftheSWS,andtheenergyistransferredfromthebeamtothecavityfield.ThetransferredenergygeneratesabackwardwaveintheSWS,whichisthencoupledoutofthedevicethroughtheoutputwaveguide.
ThedoubleharmoniccavitySWShastwoidenticalresonantcavitieswithacommonaxis.Theresonantfrequenciesofthetwocavitieshaveaspecificrelationship,whichgeneratesasecond-harmonicfieldintheinteractionregion.Thesecond-harmonicfieldaddstothefundamentalfieldoftheSWS,whichincreasestheinteractionimpedanceofthedevice.
DesignofDHCLP-RBWO
ThedesignofDHCLP-RBWOisacrucialstepinachi