电子束在周期性永磁体聚焦场中交变旋转对螺旋行波管寄生后波振荡有影响

Proceedings of the 9th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory, 2004. DIPED 2004. Pub Date : 2004-12-27 DOI:10.1109/DIPED.2004.242809

E. Belyavskiy, V. I. Chasnyk, Y.N. Strokovsky, S. Khotiaintsev

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引用次数: 2

摘要

我们已经通过实验验证了我们之前工作的理论预测(Belyavskiy, E.D. et al.， IEEE Trans.)。电子器件，vol.48, no。电子束交变旋转对周期性永磁聚焦下放大型螺旋行波管寄生后向振荡的影响。我们在一个特殊设计的螺旋后向波振荡器中测量了后向波开始振荡电流与相互作用长度的关系。观察到的行为更接近于我们理论的预测，而不是忽略电子束旋转的理论。我们的研究结果可用于提高ppm聚焦螺旋行波管在寄生后波振荡方面的稳定性。

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Electron beam alternating rotation in periodic permanent magnet focusing field has an effect on parasitic backward-wave oscillation in helix traveling wave tube

We have verified experimentally the theoretical predictions of our previous work (Belyavskiy, E.D. et al., IEEE Trans. Electron Devices, vol.48, no.8, p.1727-36, 2001) about the effect of electron beam alternating rotation on the parasitic backward-wave oscillation in the amplifier-type helix traveling-wave tube (TWT) under periodic permanent magnetic (PPM) focusing. We measured the backward-wave start-oscillation current as a function of the interaction length in a specially designed helix backward wave oscillator. The observed behavior is much closer to the predictions of our theory, than to theories that ignore the electron beam rotation. Our results can be used for improving the stability of the PPM-focused helix TWT with respect to parasitic backward-wave oscillation.

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Proceedings of the 9th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory, 2004. DIPED 2004.

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