相对论返波振荡器的非线性理论  

Nonlinear Theory of Relativistic Backward Wave Oscillator

作　　者：文光俊[1] 李家胤[1] 谢甫珍[2] 于秀云 刘盛纲[1] 

机构地区：[1]电子科技大学高能电子学研究所,成都610054 [2]解放军后勤工程学院,重庆400016

出　　处：《电子学报》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

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%.

关 键 词：相对论返波管 非线性理论 振荡器 

分 类 号：TN125[电子电信—物理电子学] TN752