交错双栅类慢波系统中带状电子注与波相互作用的理论研究

项目名称： 交错双栅类慢波系统中带状电子注与波相互作用的理论研究

项目编号： No.11505043

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 沈飞

作者单位： 合肥工业大学

项目金额： 21万元

中文摘要： 太赫兹波段的电磁频谱开发是当今电子学领域的热点课题。真空电子技术作为一种重要的技术手段被用于开发太赫兹波段的大功率电磁辐射源，而行波管因具有频带宽、效率高等优点而被广泛应用。交错双栅类慢波结构行波管已被证明是一种潜力巨大的真空太赫兹辐射源。然而到现在为止，交错双栅类慢波系统的基础理论研究仍不完善，尤其是缺乏专门的注波互作用仿真软件，这在很大程度上延缓了交错双栅类行波管的研究工作。为了完善交错双栅类慢波系统的理论研究，为互作用软件的开发奠定理论基础，进而推动太赫兹行波管的研发进程，本项目将开展具有任意栅形状的交错双栅类慢波系统系统行波管注波互作用的非线性理论研究，包括：高频场与电子注能量交换过程的高频场方程、分析电子之间空间电荷场方程以及描述电子注在电磁场作用下运动轨迹的电子运动方程。最后借助电磁仿真软件CST对注波互作用进行分析，并利用仿真结果对所得非线性理论进行修正。

中文关键词： 慢波系统；带状电子注；注波互作用；非线性理论；真空太赫兹源

英文摘要： The development of the terahertz band electromagnetic spectrum is a hot topic in the field of electronics. The vacuum electronics is an important technology to develop high power THz radiation source. As one of the most important THz wave vacuum amplifiers, the traveling-wave tube (TWT) is widely applied for its outstanding performances in wide bandwidth, high efficiency, and so on. The staggered double vane slow-wave system(SWS) TWT has been proven to have a huge potential for vacuum terahertz radiation source. However, the theoretical study of staggered vane SWS is still imperfect by now, and the theory is missed. Especially, the development of the staggered double vane TWT is restricted by the absence of the technical beam-wave interaction software. In order to complete the theoretical study of staggered double vane SWS, and lay the foundation of the beam wave interaction software development, then promote the research progress of THz TWT. In this project, a nonlinear theory based on an arbitrary shaped staggered double vane which include the RF field equations, the space charge field equations and the electron movement equations will be developed. And the nonlinear theory will be modified based on the beam-wave interaction simulation results which will be carried out by the electromagnetic simulation software (CST).

英文关键词： slow-wave system;sheet electron beam;beam-wave interaction;nonlinear theory;vacuum terahertz source