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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Journal of Communications Technology and Electronics</journal-id><journal-title-group><journal-title xml:lang="en">Journal of Communications Technology and Electronics</journal-title><trans-title-group xml:lang="ru"><trans-title>Радиотехника и электроника</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0033-8494</issn><issn publication-format="electronic">3034-5901</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">650730</article-id><article-id pub-id-type="doi">10.31857/S0033849423120057</article-id><article-id pub-id-type="edn">XQUAEA</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>ЭЛЕКТРОНИКА СВЧ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Unknown</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Interaction of a Relativistic Electron Beam and Electromagnetic Field in a Terahertz Cherenkov Generator with a Bragg Reflector</article-title><trans-title-group xml:lang="ru"><trans-title>Взаимодействие релятивистского электронного пучка и электромагнитного поля в терагерцовом черенковском генераторе с дифракционным отражателем</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Deichuli</surname><given-names>M. P.</given-names></name><name xml:lang="ru"><surname>Дейчули</surname><given-names>М. П.</given-names></name></name-alternatives><email>koshelev@lhfe.hcei.tsc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Koshelev</surname><given-names>V. I.</given-names></name><name xml:lang="ru"><surname>Кошелев</surname><given-names>В. И.</given-names></name></name-alternatives><email>koshelev@lhfe.hcei.tsc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Petkun</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Петкун</surname><given-names>А. А.</given-names></name></name-alternatives><email>koshelev@lhfe.hcei.tsc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chazov</surname><given-names>V. A.</given-names></name><name xml:lang="ru"><surname>Чазов</surname><given-names>В. А.</given-names></name></name-alternatives><email>koshelev@lhfe.hcei.tsc.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of High-Current Electronics, Siberian Branch, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт сильноточной электроники СО РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-12-01" publication-format="electronic"><day>01</day><month>12</month><year>2023</year></pub-date><volume>68</volume><issue>12</issue><fpage>1202</fpage><lpage>1210</lpage><history><date date-type="received" iso-8601-date="2025-01-31"><day>31</day><month>01</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, М.П. Дейчули, В.И. Кошелев, А.А. Петкун, В.А. Чазов</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, М.П. Дейчули, В.И. Кошелев, А.А. Петкун, В.А. Чазов</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">М.П. Дейчули, В.И. Кошелев, А.А. Петкун, В.А. Чазов</copyright-holder><copyright-holder xml:lang="ru">М.П. Дейчули, В.И. Кошелев, А.А. Петкун, В.А. Чазов</copyright-holder></permissions><self-uri xlink:href="https://innoscience.ru/0033-8494/article/view/650730">https://innoscience.ru/0033-8494/article/view/650730</self-uri><abstract xml:lang="en"><p>A 2.5D hybrid model is used to numerically study the interaction of a beam with a current of 2.5–7.5 kA and an electron energy of 345–510 keV and terahertz (364–368 GHz) electromagnetic field. It is shown that Bragg reflectors in an electrodynamic system with an overmode ratio of 49 make it possible to significantly suppress backward radiation and multiply increase the radiation power in the direction of the electron beam. Radiation pulses with a power of up to 330 MW are obtained in calculations with disregard of heat loss in the presence of a guiding magnetic field of 6 T.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45257551550976">С использованием 2.5D гибридной модели численно исследовано взаимодействие пучка с током 2.5…7.5 кА, энергией электронов 345…510 кэВ и электромагнитного поля в терагерцовом (364…368 ГГц) диапазоне частот. Показано, что применение дифракционных отражателей в электродинамической системе с параметром сверхразмерности 49 позволяет значительно подавить обратное излучение и многократно увеличить мощность излучения в направлении электронного пучка. В расчетах без учета тепловых потерь в ведущем магнитном поле 6 Тл получены импульсы излучения с мощностью до 330 МВт.</p></trans-abstract><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Booske J.H., Dobbs R.J., Joye C.D. et al. // IEEE Trans. 2011. V. TST-1. № 1. P. 54. https://doi.org/10.1109/TTHZ.2011.2151610</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>San M.T., Ogura K., Kubota K. et al. // IEEE Trans. Pl2018. V. PS-46. № 3. P. 530. https://doi.org/10.1109/TPS.2018.2796569</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Куркан И.К., Ростов В.В., Тотьменинов Е.М. // Письма ЖТФ. 1998. Т. 24. № 10. С. 43.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Ansari M.A., Thottappan M. // IEEE Trans. 2019. V. PS-47. № 4. 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