摘要
结合低磁场返波管振荡器和虚阴极振荡器的优点,设计了一个具有较高效率的虚阴极振荡器,通过添加半反射腔,使虚阴极在由阳极箔、波导和半反射腔组成的准谐振腔内形成,实现器件的高效率、高功率运行。当电子能量和束流分别为480keV和23kA时,采用2.5维粒子模拟(PIC)程序模拟得到频率为3.7GHz、功率为2.6GW的微波输出,器件束波转换效率约为23%。
Based on the advantages of the relativistic backward wave oscillator （RBWO） with low magnetic field and virca- tor, a novel configuration of vircator with a high beam-wave conversion efficiency is presented and the 2.5-D particle-in-cell simu lations are carried out using a PIC code. When the energy of the electron is 480 keV while the beam current is 23 kA, a simulated result of 2.6 GW output microwave power with a frequency of 3.7 GHz is obtained, for which the beam-wave conversion efficien- cy of the vircator is 23%.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2015年第5期140-143,共4页
High Power Laser and Particle Beams
基金
国家高技术发展计划项目
关键词
半反射腔
准谐振腔
虚阴极振荡器
粒子模拟
fractional reflector
quasi resonance cavity
vircator
particle-in-cell simulations
