Spectra of Cherenkov and transition radiation excited by a train of electron bunches in dielectric structures of rectangular cross-section

• Дата: 2006
• Автори: Onishchenko, I.N., Onishchenko, N.I., Sotnikov, G.V.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2006
• Назва видання: Вопросы атомной науки и техники
• Теми: Ускорители заряженных частиц
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/79303
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Spectra of Cherenkov and transition radiation excited by a train of electron bunches in dielectric structures of rectangular cross-section / I.N. Onishchenko, N.I. Onishchenko, G.V. Sotnikov // Вопросы атомной науки и техники. — 2006. — № 3. — С. 60-65. — Бібліогр.: 6 назв. — англ.

The peculiarities of radiation spectra of a single relativistic electron bunch or train of bunches in an infinite rectangular dielectric waveguide, in a semi-infinite dielectric waveguide, and in a dielectric waveguide of finite length were theoretically explored. Single-mode and multimode modes were surveyed. In the first case, the excited fields corresponding to Cherenkov and transition radiation were identified. In the second case, the substantial growth of field amplitude was obtained due to interference of many excited transversal modes. Limitation on maximum field amplitude and amount of contributing bunches caused by the fields removal with a group velocity was found. The features of excited spectra caused by a regular sequence of bunches were investigated. Selective excitation of transversal modes and corresponding field waveform were considered for the arbitrary rectangular geometry.