Нестійкість трубчастого електронного пучка у разі обдування плазмового твердотільного циліндра, який розміщено у сильному поздовжньому магнітному полі
An electrodynamic system, where a magnetized tubular electron beam blows around a cylindrical solid-state plasma waveguide, has been theoretically studied. It is established that the hybrid bulk-surface or surface electromagnetic waves of the helicon origin are excited in the waveguide, if quasi-sta...
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| Date: | 2022 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English Ukrainian |
| Published: |
Publishing house "Academperiodika"
2022
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| Subjects: | |
| Online Access: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2022408 |
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| Journal Title: | Ukrainian Journal of Physics |
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Ukrainian Journal of Physics| Summary: | An electrodynamic system, where a magnetized tubular electron beam blows around a cylindrical solid-state plasma waveguide, has been theoretically studied. It is established that the hybrid bulk-surface or surface electromagnetic waves of the helicon origin are excited in the waveguide, if quasi-stationary conditions are satisfied. The waveguide eigenwaves are excited by the beam space-charge field with the matching of the longitudinal spectral components of the electric field. The non-reciprocity effect is pointed out between the waveguide eigenwaves with the structurally identical field distributions but different azimuthal directions of propagation, as well as if the direction of the external magnetic field changes. It is shown that the instability of coupled waves of the electrodynamic system takes place due to the Vavilov–Cherenkov effect. |
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