【摘要】 回旋振荡管的各部分对工作效率都有影响,从阴极发射电子的质量到注-波互作用段再到输出结构的模式变换器以及收集极,每个部分必须协调工作才能提高工作效率。谐振腔作为整个管子核心部分,腔体中的模式竞争直接影响管子的工作效率。从麦克斯韦方程出发推导出了回旋管中过渡渐变复合腔的高频场方程,明确了模式之间的耦合方式。通过对耦合系数的深入分析,发现改变腔体结构可以改变耦合系数的分布方式,进而抑制竞争模式的存在,使工作模式与电子注互作用时不受杂模的影响,提高管子的互作用效率。更多还原

【Abstract】 Each part of cyclotron oscillator tube has an impact on the working efficiency.The uniform cathode emission and the electron-wave interaction,the mode converter and the collector,each part must be coordinated well with others so as to improve work efficiency.Resonant cavity is the core component of a cyclotron oscillator tube,and the mode competition in the cavity can directly influence the work efficiency of the whole tube.The high frequency field equation of a complex cavity with gradual transition section was deduced on the basis of Maxwell equations,and the coupling between modes was showed clearly.Though deep analysis of the coupling coefficient,the structure of the cavity was ameliorated to change the coupling coefficient distribution and to reduce competitive modes;and so the operating mode was kept from being affected by other non-operating modes in beam-wave interaction and the interacting efficiency of the tube was improved.更多还原