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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">pribor</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Приборостроение</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of Instrument Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3454</issn><issn pub-type="epub">2500-0381</issn><publisher><publisher-name>Национальный исследовательский университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/0021-3454-2024-67-2-171-177</article-id><article-id custom-type="elpub" pub-id-type="custom">pribor-20</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>ОПТИЧЕСКИЕ И ОПТИКО-ЭЛЕКТРОННЫЕ ПРИБОРЫ И КОМПЛЕКСЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>OPTICAL AND OPTOELECTRONIC DEVICES AND COMPLEXES</subject></subj-group></article-categories><title-group><article-title>Влияние давления на результаты измерения объемных долей газовых компонентов методом спектроскопии комбинационного рассеяния</article-title><trans-title-group xml:lang="en"><trans-title>Influence of pressure on the results of measuring the volume fractions of gas components using Raman spectroscopy</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>Попов</surname><given-names>Е. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Popov</surname><given-names>E. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгений Эдуардович Попов – руководитель группы НТР</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Evgeniy E. Popov – Head of Scientific and Technical Development Group</p><p>St. Petersburg</p></bio><email xlink:type="simple">eepopov@itmo.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>Виткин</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vitkin</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Владимирович Виткин – канд. физ.-мат. наук; руководитель лаборатории ЛООКС</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Vladimir V. Vitkin – PhD; Head of Laboratory of Optoelectronic Support for Cyber-Physical Systems</p><p>St. Petersburg</p></bio><email xlink:type="simple">vitkin@itmo.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет ИТМО</institution></aff><aff xml:lang="en"><institution>ITMO University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>24</day><month>11</month><year>2024</year></pub-date><volume>67</volume><issue>2</issue><fpage>171</fpage><lpage>177</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Национальный исследовательский университет ИТМО, 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Национальный исследовательский университет ИТМО</copyright-holder><copyright-holder xml:lang="en">Национальный исследовательский университет ИТМО</copyright-holder><license xlink:href="https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://pribor.ifmo.ru/jour/article/view/20">https://pribor.ifmo.ru/jour/article/view/20</self-uri><abstract><p>Рассмотрено влияние давления на результаты измерения объемных долей газовых компонентов методом спектроскопии комбинационного рассеяния. Выявлен нелинейный характер влияния давления на световой поток в спектральном диапазоне от 1380 до 1399 см–1 для изотополога диоксида углерода 12СО2 и в спектральном диапазоне от 1361 до 1379 см–1 – для изотополога диоксида углерода 13СО2. Измерены спектры комбинационного рассеяния газовых смесей известного изотопного состава при различном давлении. Нелинейным методом наименьших квадратов найдены функция отклонения интегрального светового потока от линейной зависимости и ее коэффициенты. Эту функцию предложено использовать для вычисления поправочных коэффициентов в калибровочных функциях. Калибровочные функции связали регистрируемый приемником излучения световой поток с объемной долей молекул исследуемого вещества. Применение поправочных коэффициентов позволило повысить точность измерения объемной доли исследуемых газовых компонентов.</p></abstract><trans-abstract xml:lang="en"><p>The influence of pressure on the results of measuring the volume fractions of gas components using Raman spectroscopy is considered. The nonlinear nature of the influence of pressure on the light flux is revealed in the spectral range from 1380 to 1399 cm–1 for the isotopologue of carbon dioxide 12СО2 and in the spectral range from 1361 to 1379 cm–1 for the isotopologue of carbon dioxide 13СО2. The Raman spectra of gas mixtures of known isotopic composition are measured at different pressures. The function of deviation of the integral light flux from the linear dependence and its coefficients are found using the nonlinear least squares method. It is proposed to use this function to calculate correction factors in calibration functions. Calibration functions relate the light flux recorded by the radiation receiver to the volume fraction of molecules of the substance under study. The use of correction factors enables to increase the accuracy of measuring the volume fraction of the gas components under study.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>комбинационное рассеяния света</kwd><kwd>влияние давления на спектр комбинационного рассеяния</kwd><kwd>измерение объемной доли</kwd><kwd>диоксид углерода</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Raman scattering</kwd><kwd>influence of pressure on the Raman spectrum</kwd><kwd>volume fraction measurement</kwd><kwd>carbon dioxide</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа поддержана грантом Министерства науки и высшего образования № 075-15-2021-1349.</funding-statement><funding-statement xml:lang="en">This work was supported by a grant from the Ministry of Science and Higher Education № 075-15-2021-1349.</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">Петров Д. 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