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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">npe</journal-id><journal-title-group><journal-title xml:lang="ru">Ядерная физика и инжиниринг</journal-title><trans-title-group xml:lang="en"><trans-title>Nuclear Physics and Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-5629</issn><issn pub-type="epub">2079-5637</issn><publisher><publisher-name>МИФИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.56304/S2079562922050360</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-128</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Математическое моделирование в ядерных технологиях</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Mathematical Modeling in Nuclear Technologies</subject></subj-group></article-categories><title-group><article-title>Моделирование процесса формирования электронного сгустка в фотопушках</article-title><trans-title-group xml:lang="en"><trans-title>Simulation of Electron Bunch Formation Process in Photoguns</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Полозов</surname><given-names>С. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Polozov</surname><given-names>S. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115409</p></bio><bio xml:lang="en"><p>Moscow, 115409</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ращиков</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Rashchikov</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115409</p></bio><bio xml:lang="en"><p>Moscow, 115409</p></bio><email xlink:type="simple">VIRashchikov@mephi.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Национальный исследовательский ядерный университет “МИФИ”<country>Россия</country></aff><aff xml:lang="en">National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>23</day><month>04</month><year>2024</year></pub-date><volume>14</volume><issue>5</issue><fpage>460</fpage><lpage>464</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Полозов С.М., Ращиков В.И., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Полозов С.М., Ращиков В.И.</copyright-holder><copyright-holder xml:lang="en">Polozov S.M., Rashchikov V.I.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://npe.elpub.ru/jour/article/view/128">https://npe.elpub.ru/jour/article/view/128</self-uri><abstract><p>С помощью разработанной модели фотоэмиссии электронных сгустков пикосекундной длительности с большим зарядом в сильных ВЧ полях, в которой учтен процесс переноса заряда в полупроводниковой пленке фотокатода, проведен детальный анализ процесса формирования электронного сгустка в ВЧ фотопушке. Исследуются эффекты, оказывающие доминирующее влияние на формирование его эмиттанса и энергетического спектра.</p></abstract><trans-abstract xml:lang="en"><p>The previously developed improved photoemission model has been applied to a detailed analysis of the process of high-brightness electron bunch formation process in the RF photogun. Space charge-dominated photoemission has a significant influence on the formation of transverse emittance as well as on the energy distribution within the emitted electron bunch.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фотоэмиссии</kwd><kwd>ВЧ пушка</kwd><kwd>моделирование</kwd><kwd>ускорители заряженных частиц</kwd><kwd>интенсивные пучки</kwd><kwd>пространственный заряд</kwd></kwd-group><kwd-group xml:lang="en"><kwd>photoemission</kwd><kwd>RF gun</kwd><kwd>simulation</kwd><kwd>charged particle accelerators</kwd><kwd>high intensity beams</kwd><kwd>space charge</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена в рамках проекта РФФИ № 19- 29-12036.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Krasilnikov M.M. et al. // Phys. Rev. ST Accel. Beams. 2012. V. 15. 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