Cherenkov Interaction of a Hollow Relativistic Electron Beam with RF Fields of a Disc-Loaded Rod Antenna in a Circular Waveguide [Electronic resource] / A. S. Shlapakovski

Основной Автор-лицо: Shlapakovski, A. S.Язык: английский.Страна: Россия.Серия: High power microwavesРезюме или реферат: The instability of an electron beam propagating within the slow-wave supporting structure comprising an inner disc-loaded conducting rod and an outer circular waveguide is considered. The linear theory is developed in the one-wave approximation, i.e., not taking the space harmonics into account. The complex solutions of the derived dispersion relation are investigated numerically for the fundamental mode of the system, the quasi-TEM mode. The results are compared with the case of an inner dielectric rod, for which the fundamental mode is the nonaxisymmetric HE11 mode. The possibility of using the disc-loaded rod antenna in a hybrid antenna-amplifier device is discussed. For the disc-loaded conducting rod, spatial growth rates are higher due to stronger beam-wave coupling at given beam-rod distances, and amplification bands are wider due to weaker dispersion of the quasi-TEM mode; however, for the dielectric rod, the issues of the microwave drive signal input are significantly easier..Примечания о наличии в документе библиографии/указателя: [References: p. 283 (5 tit.)].Аудитория: .Тематика: сильноточная электроника | круглые волноводы | антенны | релятивистские электронные пучки | черенковское взаимодействие | нагруженные стержни | электромагнитные поля | труды учёных ТПУ | электронный ресурс Ресурсы он-лайн:Щелкните здесь для доступа в онлайн
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Title from the title-page.

[References: p. 283 (5 tit.)]

The instability of an electron beam propagating within the slow-wave supporting structure comprising an inner disc-loaded conducting rod and an outer circular waveguide is considered. The linear theory is developed in the one-wave approximation, i.e., not taking the space harmonics into account. The complex solutions of the derived dispersion relation are investigated numerically for the fundamental mode of the system, the quasi-TEM mode. The results are compared with the case of an inner dielectric rod, for which the fundamental mode is the nonaxisymmetric HE11 mode. The possibility of using the disc-loaded rod antenna in a hybrid antenna-amplifier device is discussed. For the disc-loaded conducting rod, spatial growth rates are higher due to stronger beam-wave coupling at given beam-rod distances, and amplification bands are wider due to weaker dispersion of the quasi-TEM mode; however, for the dielectric rod, the issues of the microwave drive signal input are significantly easier.

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