L波段相对论返波振荡器初步实验研究  

Primary experiments of L-band relativistic backward wave oscillator

作　　者：葛行军[1] 高梁[1] 曹亦兵[1] 张强[1] 钱宝良[1] 钟辉煌[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,长沙410073

出　　处：《强激光与粒子束》2010年第3期609-612,共4页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：设计了一个紧凑型L波段相对论返波振荡器(RBWO),利用Karat 2.5维全电磁粒子模拟程序研究了器件内部束-波作用的物理过程。模拟结果表明:在二极管电压700 kV、电子束流10 kA、导引磁场为1.0 T时,能实现L波段2.23 GW高功率微波输出,平均效率约为31.8%。为验证模拟结果,在高阻加速器平台上进行了初步实验:当二极管电压为703 kV、电流10.6 kA、导引磁场为0.8 T时,实验获得了峰值功率1.05 GW、频率1.61 GHz、脉宽38 ns的高功率微波输出,其功率效率为14.4%。A compact L-band relativistic backward wave oscillator（RBWO） is investigated with simulation and experimental method. In simulation, the L-band coaxial RBWO, driven by a 700 kV, 10 kA electron beam, comes to a nonlinear steady state in 20 ns. High-power microwave（HPM） is generated with an average power of 2.23 GW, a frequency of 1.60 GHz, and power conversion efficiency of 31.8%. In the primary experiment, the measured microwave frequency is 1.61 GHz, with a peak power level of above 1.05 GW, when the diode voltage is 703 kV and the current is 10.6 kA. The pulse duration （full-width at half-maximum） of the radiated microwave is 38 ns.

关 键 词：高功率微波 相对论返波振荡器 同轴慢波结构 L波段 

分 类 号：TN125[电子电信—物理电子学]