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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-239</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>ПОНИЖЕНИЕ ПОРОГА СПЕКТРАЛЬНОГО ОБНАРУЖЕНИЯ МОЛЕКУЛЯРНЫХ ПРИМЕСЕЙ В СМЕСЯХ ГАЗОВ МЕТОДОМ ИНТЕРФЕРЕНЦИОННОГО МУЛЬТИПЛЕКСИРОВАНИЯ</article-title><trans-title-group xml:lang="en"><trans-title>DECREASING THE THRESHOLD OF THE SPECTRAL DETECTION OF MOLECULAR IMPURITIES IN GAS MIXTURES BY THE INTERFERENCE MULTIPLEXING METHOD</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>Иванов</surname><given-names>М. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>M. P.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Толмачев</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tolmachev</surname><given-names>Yu. A.</given-names></name></name-alternatives><email xlink:type="simple">ytolmachev@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный университет</institution></aff><aff xml:lang="en"><institution>Saint Petersburg State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>10</day><month>03</month><year>2020</year></pub-date><volume>85</volume><issue>2</issue><fpage>335</fpage><lpage>340</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Иванов М.П., Толмачев Ю.А., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Иванов М.П., Толмачев Ю.А.</copyright-holder><copyright-holder xml:lang="en">Ivanov M.P., Tolmachev Y.A.</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/239">https://zhps.ejournal.by/jour/article/view/239</self-uri><abstract><p>Рассмотрены наиболее вероятные пути значительного повышения чувствительности спектроскопических методов обнаружения и измерения следовых концентраций молекул парниковых газов в атмосфере. Основу предлагаемых методов составляет сложение световых потоков множества спектральных компонент заданной молекулы на одном фотоприемнике с учетом особенностей спектра пропускания устройств, использующих эффекты многолучевой интерференции.</p></abstract><trans-abstract xml:lang="en"><p>The most probable ways to significantly increase the sensitivity of spectroscopic methods for detecting and measuring trace concentrations of greenhouse gas molecules in the atmosphere are considered. The basis of the proposed methods is the addition of light flows of a set of spectral components of a given molecule on a single photodetector by using the transmission spectrum features of devices using the effects of multipath interference.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>порог обнаружения</kwd><kwd>парниковые газы</kwd><kwd>спектральное мультиплексирование</kwd><kwd>detection threshold</kwd><kwd>greenhouse gases</kwd><kwd>spectral multiplexing</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">И. В. Скоков. Оптические спектральные приборы, Москва, Машиностроение (1984)</mixed-citation><mixed-citation xml:lang="en">И. В. Скоков. Оптические спектральные приборы, Москва, Машиностроение (1984)</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Дж. Миберн. 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