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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">najo-1237</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="en"><subject>PHYSICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group></article-categories><title-group><article-title>Non-linear optical channels of the polarizability induction in a pair of interacting molecules</article-title><trans-title-group xml:lang="ru"><trans-title>Нелинейно-оптические каналы индукции поляризуемости</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>Коузов</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kouzov</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт-Петербург 198504.</p></bio><bio xml:lang="en"><p>A.P. Kouzov –Doctor of Physics and Mathematics, Leading Researcher,</p><p>Saint-Petersburg.</p></bio><email xlink:type="simple">alex@ak1197.spb.edu</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>Егорова</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Egorova</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт-Петербург 198504.</p></bio><bio xml:lang="en"><p>N.I. Egorova –Candidate of Physics and Mathematics, Assistant,</p><p>Saint-Petersburg.</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>Кризос</surname><given-names>М.</given-names></name><name name-style="western" xml:lang="en"><surname>Chrysos</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Анже.</p></bio><bio xml:lang="en"><p>M. Chrysos –Docteur de Sciences, Professeur,</p><p>49045 Angers.</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Раше</surname><given-names>Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Rachet</surname><given-names>F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Анже.</p></bio><bio xml:lang="en"><p>F. Rachet – Docteur de Sciences, Maître de Conférences,</p><p>49045 Angers.</p></bio><xref ref-type="aff" rid="aff-2"/></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><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Университет г. Анже</institution></aff><aff xml:lang="en"><institution>Université d’ Angers</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2012</year></pub-date><pub-date pub-type="epub"><day>20</day><month>08</month><year>2025</year></pub-date><volume>3</volume><issue>2</issue><fpage>55</fpage><lpage>64</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kouzov A.P., Egorova N.I., Chrysos M., Rachet F., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Коузов А.П., Егорова Н.И., Кризос М., Раше Ф.</copyright-holder><copyright-holder xml:lang="en">Kouzov A.P., Egorova N.I., Chrysos M., Rachet F.</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://nanojournal.ifmo.ru/jour/article/view/1237">https://nanojournal.ifmo.ru/jour/article/view/1237</self-uri><abstract><p>Intermolecular interactions give rise to the incremental polarizabilities in molecular ensembles that triggers  the Raman vibrational transitions forbidden by selection rules for isolated molecules. By using the diagrammatic technique, a new channel of the long-range binary polarizability induction is established, for which the outer field and the electric field of a molecule non-linearly polarize the other particle. An account for this channel is found to  be crucial for a successful quantitative interpretation of the СО2 ν3 Raman band induced by the СО2-СО2 and СО2-Ar collisions.</p></abstract><trans-abstract xml:lang="ru"><p>Межмолекулярные взаимодействия приводят к появлению дополнительных слагаемых поляризуемости молекулярного ансамбля и разрешают колебательные переходы в спектрах комбинационного рассеяния, запрещенные правилами отбора для изолированных частиц. На основе диаграммной техники  выявлен новый дальнодействующий канал индукции парной поляризуемости, при которой внешнее поле и электрическое поле одной из молекул нелинейным образом поляризуют частицу-партнер. Показано, что учет этого канала есть необходимое условие успешной количественной интерпретации КР-полосы ν3 СО2, индуцированной столкновениями СО2-СО2 и СО2-Ar.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>спектроскопия межмолекулярных взаимодействий</kwd><kwd>комбинационное рассеяние</kwd><kwd>нелинейная поляризация молекул</kwd></kwd-group><kwd-group xml:lang="en"><kwd>spectroscopy of intermolecular interactions</kwd><kwd>Raman scattering</kwd><kwd>nonlinear polarization of molecules</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">А.П. Коузов  благодарит РФФИ за финансовую поддержку в рамках проектов 11-03-01245а и 11-03-00448а.</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">Frommhold L. 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