In theory, based on the time changing characters of the ratio of the penetrated electron current density to the injected current density changed with time, the main microwave generation mechanism in the virtual cathode oscillator was analyzed.
束电子在虚阴极处的透过率随其能量变化而变化，在电子束整个运行过程中是束电子失去能量、微波得到增长，这是虚阴极振荡器中微波增长的一个基本机制。
参考来源 - 调制型虚阴极振荡器的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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