摘要
本文建立起分析相对论返波管注波互作用过程的自洽非线性工作方程组 ,理论模型中计及了正向波基波与电子注的异步互作用效应、电子注的空间电荷效应 .运用四阶龙格一库塔法编制了数值求解工作方程组的For tran程序 ,对均匀耦合阻抗型器件和耦合阻抗单阶跃变型器件的效率进行了仿真和优化 .数值模拟结果表明正向波基波与同步波在慢波结构起始处的相差 ,正向波基波与电子注的异步互作用效应能显著地影响相对论返波管效率 ,均匀阻抗器件运行于最佳状态时 ,效率可达到 2 7% ,耦合阻抗单阶跃变型器件最优化效率可达到 5 0 % .
The self consistent nonlinear theory of relativistic backward wave oscillator with End reflections,asynchronous interaction of the forward fundamental wave with election beam and electron beam space charge effect was built up in the conditions of classical phase mould.The Fortran code to numerically solve the nonlinear beam wave interaction equations was constructed by use of Four order Runga Kutta method.The code was used to investigate the nonlinear beam wave interaction and other optimization issues of relativistic backward wave oscillator.The numerical simulation results show:the efficiency of the uniform coupling impedance device can be up to 27% when the phase difference between the forward fundamental wave and the synchronous harmonic at the start of slow wave structure and the asynchronous beam wave interaction are both in optimal conditions,for the device with a single step change in coupling impedance,the optimum efficiency can be up to 50%.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2000年第6期93-97,共5页
Acta Electronica Sinica
基金
国家 8 63激光技术领域资助课题
关键词
相对论返波管
非线性理论
振荡器
relativistic backward wave oscillator
nonlinear theory
beam wave interaction theory
numerical modeling
