强激光与粒子束, 2015, 27 (5): 053005, 网络出版: 2015-05-20
新型高效率虚阴极振荡器
A novel efficient vircator
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
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480 keV和23 kA时, 采用2.5维粒子模拟(PIC)程序模拟得到频率为3.7 GHz、功率为2.6 GW的微波输出, 器件束波转换效率约为23%。
Abstract
Based on the advantages of the relativistic backward wave oscillator (RBWO) with low magnetic field and vircator, a novel configuration of vircator with a high beam-wave conversion efficiency is presented and the 2.5-D particle-in-cell simulations 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 efficiency of the vircator is 23%.
马乔生. 新型高效率虚阴极振荡器[J]. 强激光与粒子束, 2015, 27(5): 053005. Ma Qiaosheng. A novel efficient vircator[J]. High Power Laser and Particle Beams, 2015, 27(5): 053005.
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