Excitation of eigen azimthal waves by annular charged particle beam
Investigations of an interaction between charged-particle beams and hybrid waveguide structures are important for radio engineering and plasma electronics. It is the distinctive feature of the interaction between charged particle beams and such structures of finite dimensions that motivated the choi...
Збережено в:
| Дата: | 2005 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2005
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| Назва видання: | Вопросы атомной науки и техники |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/78894 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Excitation of eigen azimthal waves by annular charged particle beam / V. Girka, V. Lapshin, S. Puzyrkov // Вопросы атомной науки и техники. — 2005. — № 1. — С. 128-130. — Бібліогр.: 7 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Investigations of an interaction between charged-particle beams and hybrid waveguide structures are important for radio engineering and plasma electronics. It is the distinctive feature of the interaction between charged particle beams and such structures of finite dimensions that motivated the choice of the subject for our study. Here we investigate the excitation of an extraordinarily polarized electromagnetic azimuthal waves (AW), that are eigen modes of a cylindrical metal waveguide partially filled with a cold magnetized plasma. These modes propagate in azimuthal direction strictly transverse to a constant external axial magnetic field. A two-dimensional self-consistent set of differential equations for interaction between AW and cold low-density charged-particle beam moving above the plasma surface is constructed in the single-mode approximation and is solved numerically. Constructed nonlinear theory can be applied for modeling an operation of short-scale plasma filled devices capable of generating continuously tunable radiation over a broad frequency band (eigenfrequency of the plasma structure can be continuously tuned by varying the plasma density). Influence of nonuniformity of charged particle beam distributions in co-ordinate and phase spaces on evolution of beam-driven instability of the AW are examined. |
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