双频磁绝缘线振荡器微波产生特性的数值研究
Numerical study on microwave generation characteristics of bifrequency MILO
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摘要: 利用数值模拟的方法，研究了角向分区比例分别为1∶1，1∶2，1∶3，2∶1和2∶2的双频磁绝缘线振荡器（MILO）的微波产生特性，得到了“热腔”条件下的微波电场分布，电子的相空间图，输出微波的总功率，以及微波频率随角向的分布变化等特性。为了比较，还给出了对应于双频MILO的谐振腔深度的两种常规的角向均匀的单频MILO的模拟结果。研究揭示了双频MILO内束波互作用分区分别工作的规律，提高了对双频MILO产生双频率高功率微波的机理的认识，为双频MILO的双频辐射技术和双频微波测试技术提供了依据。Abstract: By way of numerical analysis, microwave generation characteristics of bifrequency magnetically insulated transmission line oscillators (BFMILOs) with azimuthal partition proportions of 1∶1, 1∶2, 1∶3, 2∶1 and 3∶1 are investigated. The microwave field distributions, the phasespace of electrons, the output microwave power and microwave frequencies as the function of angle on the hotcavity condition are obtained. In order to make comparison, two conventional MILO with two kinds of cavitydepth corresponding to the BFMILO are simulated and their simulation results are presented. The numerical study further shows the rule that the interaction between electron beam and microwave in BFMILO is separate in different particular partition, and it makes clear the mechanism of high power microwa
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