强流相对论多注电子束产生的关键技术研究

项目名称： 强流相对论多注电子束产生的关键技术研究

项目编号： No.11475158

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 黄华

作者单位： 中国工程物理研究院应用电子学研究所

项目金额： 80万元

中文摘要： 基于强流相对论多注电子束技术的相对论速调管放大器(RKA)具有高功率、高效率、高频运行、易于抑制自激振荡和需要引导磁场强度较低等优点，该器件在高功率微波(HPM)器件研究中得到大力发展，但研究中遇到了强流相对论多注电子束产生品质差、引入器件漂移管的效率低等严重问题，直接导致了器件整管束波互作用效率和工作稳定性显著降低等后果。本项目拟采用物理结合模拟和实验诊断分析的手段，开展强流相对论多注阴极的结构、材料及其在高压场强下爆炸发射强流多注电子束的物理发展过程以及在引导磁场作用下进入漂移管的物理过程进行研究，找到影响强流多注电子束发射品质和引入效率的主要因素，提出相应的解决措施，为提高强流多注RKA的整管效率和工作稳定性提供重要的基础。

中文关键词： 强流相对论多注电子束；电子束产生；冷阴极；爆炸发射；电子束注入

英文摘要： The Relativistic Klystron Amplifier(RKA) driven by Intense Relativistic Multi-Electron Beams(IRMEBs) has many opportunities, such as high output power, high beam-wave conversion efficiency, high operation frequency, be apt to suppress self-oscillation and low leading magnetic field. The RKA has been developed energetically in the research areas of High Power Microwave devices. However, it has encountered with bad qualities of IRMEBs and low injecting efficiency into drifting tube of HPM devices, and it lead to low total beam-wave conversion efficiency and unstable operation for the RKA driven by Intense Relativistic Multi-Electron Beams. In this item, the applicant will investigate the structure, materials of multi-beam cathode and its explosion emission process driven by high electric field and the inject process into drifting tube of the IRMEBs by the physical method combined with PIC simulation and experiment. The applicant will explore the main factors which led to the bad qualities of IRMEBs and low injecting efficiency, and some effective resolving measures will be put forward which will be tested y the experiment. This item will promote the total beam-wave conversion efficiency and its stable operation for the RKA driven by the Intense Relativistic Multi-Electron Beams.

英文关键词： intense relativistic multi-beam eletrons;electron emission;cold cathode;explode emission;eletron injection