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介质加载的矩形截面Cerenkov脉塞中带状电子注与慢波结构互作用的研究
Study on the interaction between a sheet electron beam and the slow-wave structure for dielectric-loaded rectangular Cerenkov maser
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摘要: 本文建立了介质加载的矩形截面Cerenkov脉塞中带状电子注与慢波结构互作用的三维物理模型.采用Borgnis函数法和场匹配法求解了多层介质中场的匹配问题,获得了注波互作用结构的混合模热色散方程（含电子注）及其近似解.通过数值计算,分析了热态下介质层厚度、电子注电压、电流密度、电子注厚度及电子注与介质层间隙距离等主要结构和电参数对注波互作用增长率的影响.
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关键词:
- Cerenkov脉塞 /
- Borgnis函数法 /
- 场匹配法 /
- 热色散方程
Abstract: A three-dimensional model for the interaction between a sheet electron beam and the slow-wave structure of dielectric-loaded rectangular Cerenkov maser is proposed.Based on this model,the hybrid-mode dispersion equation and its analytical solution are derived by using the field-match method and the Borgnis function method.Through numerical calculations,the effects of dielectric layer thickness,beam voltage,current density,bean thickness and beam-dielectric layer gap on the linear growth rate are analyzed. -
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