摘要
采用粒子模拟和实验相结合的方法对轴向反馈式虚阴极振荡器进行了研究。结果表明,轴向反馈式虚阴极振荡器能够有效地锁定微波频率,提高输出功率。在二极管电压为450kV,束流为22kA的条件下,当阴阳极间距大于1.3cm时,辐射微波主频约为3.5GHz,此时与腔的耦合较好,微波辐射功率较高;当阴阳极间距小于1.3cm时,辐射微波主频约为4.8GHz。实验和模拟符合得较好。
With particle simulation and experiment, an axial feedback vircator was studied in detail. It shows that the axial feedback vircator can lock the microwave operation frequency and increases the microwave power effectively. In our model, It is found that the dominant microwave frequency is approximately unchanged at about 3.5 GHz or at about 4.8 GHz with the cathode-anode gap greater or less than 1.3 cm, respectively, with a diode voltage of about 450 kV and the beam current of about 22 kA. In addition, it is also found that the coupling of the microwave of 3.5 GHz with the cavity mode is good. The experimental results confirm the conclusions obtained in simulation.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2003年第12期1209-1212,共4页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
关键词
虚阴极振荡器
粒子模拟
轴向反馈
Anodes
Cathodes
Diodes
Electric currents
Feedback
Frequencies
Microwaves
Simulation
