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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">Himičeskaâ fizika</journal-id><journal-title-group><journal-title xml:lang="en">Himičeskaâ fizika</journal-title><trans-title-group xml:lang="ru"><trans-title>Химическая физика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0207-401X</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">674877</article-id><article-id pub-id-type="doi">10.31857/S0207401X23040143</article-id><article-id pub-id-type="edn">MXJCSX</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Kinetics and mechanism of chemical reactions, catalysis</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Кинетика и механизм химических реакций, катализ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Unknown</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Collisional Broadening of Spectral Lines in Slow Atomic Collisions</article-title><trans-title-group xml:lang="ru"><trans-title>Ударное уширение спектральных линий при медленных атомных столкновениях</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Umanskii</surname><given-names>S. Ya.</given-names></name><name xml:lang="ru"><surname>Уманский</surname><given-names>С. Я.</given-names></name></name-alternatives><email>unan43@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Adamson</surname><given-names>S. O.</given-names></name><name xml:lang="ru"><surname>Адамсон</surname><given-names>С. О.</given-names></name></name-alternatives><email>unan43@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vetchinkin</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Ветчинкин</surname><given-names>А. С.</given-names></name></name-alternatives><email>unan43@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Deminskii</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Деминский</surname><given-names>М. А.</given-names></name></name-alternatives><email>unan43@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Olkhov</surname><given-names>O. A.</given-names></name><name xml:lang="ru"><surname>Ольхов</surname><given-names>О. А.</given-names></name></name-alternatives><email>unan43@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chaikina</surname><given-names>Yu. A.</given-names></name><name xml:lang="ru"><surname>Чайкина</surname><given-names>Ю. А.</given-names></name></name-alternatives><email>unan43@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shushin</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Шушин</surname><given-names>А. И.</given-names></name></name-alternatives><email>unan43@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Golubkov</surname><given-names>M. G.</given-names></name><name xml:lang="ru"><surname>Голубков</surname><given-names>М. Г.</given-names></name></name-alternatives><email>unan43@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Федеральный исследовательский центр химической физики им. Н.Н. Семёнова Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">OOO Kintech Lab</institution></aff><aff><institution xml:lang="ru">ООО “Кинтех Лаб”</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-04-01" publication-format="electronic"><day>01</day><month>04</month><year>2023</year></pub-date><volume>42</volume><issue>4</issue><fpage>31</fpage><lpage>46</lpage><history><date date-type="received" iso-8601-date="2025-02-28"><day>28</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, С.Я. Уманский, С.О. Адамсон, А.С. Ветчинкин, М.А. Деминский, О.А. Ольхов, Ю.А. Чайкина, А.И. Шушин, М.Г. Голубков</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, С.Я. Уманский, С.О. Адамсон, А.С. Ветчинкин, М.А. Деминский, О.А. Ольхов, Ю.А. Чайкина, А.И. Шушин, М.Г. Голубков</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">С.Я. Уманский, С.О. Адамсон, А.С. Ветчинкин, М.А. Деминский, О.А. Ольхов, Ю.А. Чайкина, А.И. Шушин, М.Г. Голубков</copyright-holder><copyright-holder xml:lang="ru">С.Я. Уманский, С.О. Адамсон, А.С. Ветчинкин, М.А. Деминский, О.А. Ольхов, Ю.А. Чайкина, А.И. Шушин, М.Г. Голубков</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0207-401X/article/view/674877">https://transsyst.ru/0207-401X/article/view/674877</self-uri><abstract xml:lang="en"><p>A great deal of attention is being paid by researchers to the multilevel modeling of complex gas-phase physicochemical processes occurring in the atmosphere, during combustion, and in plasma-chemical installations. One of the most important microscopic processes determining the transfer of radiation in these systems is the broadening of spectral lines in collisions of radiating atoms with atoms in the ground state. In this paper, we propose a formulation of the unified Franck-Condon theory of the broadening of spectral lines in gases in terms of the theory of slow atomic collisions and nonadiabatic transitions. This makes it possible to select the most efficient channels leading to the broadening of collisions based on the form of the adiabatic potential curves of the colliding atoms and, on this basis, apply fairly simple models developed in the theory of nonadiabatic transitions. As an example of using this approach, the center and wings of the of the spectral line contour of the Ar(3P1) → Ar(1S0) emission of excited argon atoms in their own gas are calculated</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181323586912">В настоящее время большое внимание исследователей уделяется многоуровневому моделированию сложных газофазных физико-химических процессов, протекающих в атмосфере, при горении и в плазмохимических установках. Одним из важнейших микроскопических процессов, определяющих перенос излучения в указанных системах, является уширение спектральных линий при столкновениях излучающих атомов с атомами в основном состоянии. В данной работе предложена формулировка единой франк-кондоновской теории уширения спектральных линий в газах в терминах теории медленных атомных столкновений и неадиабатических переходов. Это позволяет по виду адиабатических потенциальных кривых сталкивающихся атомов выбирать наиболее эффективные каналы приводящих к уширению столкновений и на этой основе применять достаточно простые модели, разработанные в теории неадиабатических переходов. В качестве примера использования такого подхода проведены расчеты центра и крыльев контура спектральной линии излучения Ar(<sup>3</sup><italic>P</italic><sub>1</sub>) → Ar(<sup>1</sup><italic>S</italic><sub>0</sub>) возбужденных атомов аргона в собственном газе.</p></trans-abstract><kwd-group xml:lang="en"><kwd>radiation</kwd><kwd>line broadening</kwd><kwd>interatomic interaction</kwd><kwd>elastic scattering</kwd><kwd>spectral line contour</kwd><kwd>nonadiabatic transition</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>излучение</kwd><kwd>уширение линии</kwd><kwd>межатомное взаимодействие</kwd><kwd>упругое рассеяние</kwd><kwd>контур спектральной линии</kwd><kwd>неадиабатический переход.</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Родионов А.И., Родионов И.Д, Родионова И.П. и др. // Хим. физика. 2021. Т. 40. № 10. 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