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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/S2079562920060184</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-185</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>Линейные поперечные, угловые и временные характеристики конверсии электронов в позитроны в оптимальных мишенях при E– = 55, 220, 1000 МэВ</article-title><trans-title-group xml:lang="en"><trans-title>Linear Transversal, Angular, and Time Characteristics of Electron-to-Positron Conversion in Optimal Targets at E– = 55, 220, 1000 MeV</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>Джилавян</surname><given-names>Л. З.</given-names></name><name name-style="western" xml:lang="en"><surname>Dzhilavyan</surname><given-names>L. Z.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Л. З. Джилавян,</p><p>Москва, 117312.</p></bio><bio xml:lang="en"><p>L. Z. Dzhilavyan,</p><p>Moscow, 117312</p></bio><email xlink:type="simple">dzhil@inr.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белышев</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Belyshev</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>С. С. Белышев,</p><p>Москва, 119991.</p></bio><bio xml:lang="en"><p>S. S. Belyshev,</p><p>Moscow, 119991.</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт ядерных исследований Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute for Nuclear Research of Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Физический факультет МГУ им. М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Physics Faculty of Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>25</day><month>04</month><year>2024</year></pub-date><volume>12</volume><issue>4</issue><fpage>220</fpage><lpage>228</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Джилавян Л.З., Белышев С.С., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Джилавян Л.З., Белышев С.С.</copyright-holder><copyright-holder xml:lang="en">Dzhilavyan L.Z., Belyshev S.S.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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/185">https://npe.elpub.ru/jour/article/view/185</self-uri><abstract><p>Для “игольчатых” “мгновенных” пучков электронов с кинетическими энергиями E− = 55, 220, 1000 МэВ, нормально падающих на оптимальные мишени-конвертеры, на выходе из конвертеров для образуемых позитронов c различными кинетическими энергиями модельно рассчитаны распределения по линейным поперечным и угловым отклонениям от оси падающего пучка и по времени выхода. Результаты расчетов сопоставлены с доступными литературными данными и требованиями экспериментов.</p></abstract><trans-abstract xml:lang="en"><p>For normally incident on optimal converter targets “needle-like” “instantaneous” beams of electrons with the kinetic energies E− = 55, 220, 1000 MeV, distributions of produced positrons with different kinetic energies at the converter outputs were model-calculated for linear transversal and angular deviations from the axis of electron beams and for time. The calculation results are compared with the available literature data and the requirements of experiments.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>пучки электронов и позитронов</kwd><kwd>конверсия электронов в позитроны в толстых мишенях</kwd><kwd>распределения позитронов из мишени по линейным поперечным и угловым отклонениям от оси падающего пучка и по времени выхода</kwd></kwd-group><kwd-group xml:lang="en"><kwd>beams of electrons and positrons</kwd><kwd>electron-to-positron conversion in thick targets</kwd><kwd>distributions of positrons from the targets over the linear transversal and angular deviations from the axis of the incident beam and over the exit time</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Miller J., Schuhl C., Tzara C., Tamas G. // J. Phys. Rad. 1960. V. 21. 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