多腔虚阴极振荡器研究  

Investigation of an axially-extracted vircator with several resonant cavities

作　　者：李志强[1] 舒挺[1] 钟辉煌[1] 樊玉伟[1] 杨建华[1] 许流荣[1] 赵延宋[1] 

机构地区：[1]国防科技大学光电科学与工程学院,长沙410073

出　　处：《强激光与粒子束》2009年第3期421-424,共4页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：提出了一种具有预调制腔、主谐振腔和提取腔组成的多腔轴向提取虚阴极振荡器结构。腔体特性分析表明其在工作频段可以获得更高的提取效率。粒子模拟显示该结构在电压700kV,电流23kA的条件下,可输出功率大于1.7GW,频率4.0GHz,功率效率大于10%的微波。初步的实验研究获得了辐射功率约700MW,频率约4.1GHz的微波输出。对实验结果的进一步分析表明,通过适当加大器件虚阴极振荡工作区微波管直径的方法可以有效改善器件的谐振性能,从而获得更好的工作性能。A new configuration of an axially-extracted vircator with several resonant cavities was put forward. Electromagnetic feature analysis shows this structure can get higher extraction efficiency. Particle simulation indicates this device can produce of 4.0 GHz microwave with an averaged power of over 1.7 GW a quasi-single TM01 mode under the diode voltage of 700 kV and the beam current of 23 kA. The power conversion efficiency is more than 10%. In the following experiment, the 410 GHz microwave with an output power of over 700 MW.

关 键 词：高功率微波 虚阴极振荡器 谐振腔 粒子模拟 

分 类 号：TN609[电子电信—电路与系统]