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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-814</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Внутридоплеровская флуоресцентная спектроскопия в тонких газовых ячейках при накачке широкополосным излучением</article-title><trans-title-group xml:lang="en"><trans-title>Sub-Doppler Fluorescence Spectroscopy in Thin Gas Cells Pumped with Broadband Radiation</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>Гасанова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Gasanova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>AZ-1143, Баку</p></bio><bio xml:lang="en"><p>AZ-1143, Baku</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>Каджар</surname><given-names>Ч. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Qajar</surname><given-names>Ch. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>AZ-1143, Баку</p></bio><bio xml:lang="en"><p>AZ-1143, Baku</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>Измайлов</surname><given-names>А. Ч.</given-names></name><name name-style="western" xml:lang="en"><surname>Izmailov</surname><given-names>A. Ch.</given-names></name></name-alternatives><bio xml:lang="ru"><p>AZ-1143, Баку</p></bio><bio xml:lang="en"><p>AZ-1143, Baku</p></bio><email xlink:type="simple">azizm57@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики, НАН Азербайджана</institution></aff><aff xml:lang="en"><institution>Institute of Physics, National Academy of Sciences of Azerbaijan</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>28</day><month>05</month><year>2021</year></pub-date><volume>88</volume><issue>2</issue><fpage>249</fpage><lpage>254</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гасанова А.С., Каджар Ч.О., Измайлов А.Ч., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Гасанова А.С., Каджар Ч.О., Измайлов А.Ч.</copyright-holder><copyright-holder xml:lang="en">Gasanova A.S., Qajar C.O., Izmailov A.C.</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://zhps.ejournal.by/jour/article/view/814">https://zhps.ejournal.by/jour/article/view/814</self-uri><abstract><p>Теоретически исследовано возбуждение атомов (молекул) разреженного газа стационарным широкополосным оптическим излучением в тонкой ячейке, внутренняя толщина которой во много раз меньше ее поперечного размера. Особенности оптической накачки и пролетной релаксации атомных частиц в таких ячейках открывают новые возможности для спектроскопии сверхвысокого разрешения. Проанализированы условия, при которых возникают узкие высококонтрастные внутридоплеровские резонансы флуоресценции на центральных частотах спонтанных переходов из оптически возбужденных атомных (молекулярных) квантовых уровней.</p></abstract><trans-abstract xml:lang="en"><p>The excitation of atoms (molecules) of a rarefied gas by stationary broadband optical radiation in a thin cell, the inner thickness of which is many times smaller than its transverse size, is studied theoretically. The features of optical pumping and transit-time relaxation of atomic particles in such cells open new possibilities for ultra-high resolution spectroscopy. The conditions are analyzed under which narrow high-contrast sub-Doppler fluorescence resonances arise at the central frequencies of spontaneous transitions from optically excited atomic (molecular) quantum levels.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>внутридоплеровские резонансы флуоресценции</kwd><kwd>тонкая газовая ячейка</kwd><kwd>широкополосное излучение</kwd><kwd>оптическая накачка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>sub-Doppler fluorescence resonances</kwd><kwd>thin gas cell</kwd><kwd>broadband radiation</kwd><kwd>optical pumping</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">W. Demtroder. Laser Spectroscopy: Basic Concepts and Instrumentation. Berlin, Springer (2003)</mixed-citation><mixed-citation xml:lang="en">W. Demtroder. Laser Spectroscopy: Basic Concepts and Instrumentation. 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