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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-420</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>ВЫДЕЛЕНИЕ ВКЛАДА СТОЛКНОВЕНИЙ, ИЗМЕНЯЮЩИХ СКОРОСТЬ ЧАСТИЦ, В ЗАТУХАНИЕ ОТКЛИКА СТИМУЛИРОВАННОГО ФОТОННОГО ЭХА В ГАЗЕ</article-title><trans-title-group xml:lang="en"><trans-title>DIFFERENTIATION OF THE CONTRIBUTION OF COLLISIONS CHANGING THE SPEED OF PARTICLES TO THE ATTENUATION OF THE STIMULATED PHOTON ECHO RESPONSE IN GAS</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>Ахмедшина</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Ahmedshina</surname><given-names>E. N.</given-names></name></name-alternatives><email xlink:type="simple">ekanika8@gmail.com</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>Нефедьев</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nefediev</surname><given-names>L. A.</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>Нефедьев</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nefedyev</surname><given-names>Y. A.</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>Гарнаева</surname><given-names>Г. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Garnaeva</surname><given-names>G. I.</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>Замалиев</surname><given-names>Н. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Zamaliev</surname><given-names>N. E.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский (Приволжский) федеральный университет</institution></aff><aff xml:lang="en"><institution>Kazan Federal 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>6</issue><fpage>891</fpage><lpage>895</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ахмедшина Е.Н., Нефедьев Л.А., Нефедьев Ю.А., Гарнаева Г.И., Замалиев Н.Э., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Ахмедшина Е.Н., Нефедьев Л.А., Нефедьев Ю.А., Гарнаева Г.И., Замалиев Н.Э.</copyright-holder><copyright-holder xml:lang="en">Ahmedshina E.N., Nefediev L.A., Nefedyev Y.A., Garnaeva G.I., Zamaliev N.E.</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/420">https://zhps.ejournal.by/jour/article/view/420</self-uri><abstract><p>Исследовано влияние столкновений с изменением скорости частиц на интенсивность отклика стимулированного фотонного эха в газовой среде. Показано, что наибольшее влияние такие столкновения оказывают при непараллельных волновых векторах возбуждающих импульсов. Предложена аппроксимационная зависимость интенсивности отклика стимулированного фотонного эха от временного промежутка между вторым и третьим возбуждающими лазерными импульсами, позволяющая выделить вклад в затухание отклика столкновений с изменением направления скорости частиц, что представляет интерес для оптической когерентной эхо-спектроскопии. </p></abstract><trans-abstract xml:lang="en"><p>The effect of collisions for which the particle velocity is changed on the intensity of the stimulated photon echo response in a gaseous medium is investigated. It is shown that such collisions have the greatest influence on the intensity for the non-parallel wave vectors of exciting pulses. An approximate dependence of the intensity of the response of the stimulated photon echo on the time interval between the second and third exciting laser pulses is proposed. This dependence permits to differentiate the contribution of collisions with the change of the velocity of particles to the attenuation of the response. It is of interest for optical coherent echo spectroscopy. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>спектральная диффузия</kwd><kwd>стимулированное фотонное эхо</kwd><kwd>неоднородное уширение</kwd><kwd>столкновения с изменением скорости частицы</kwd><kwd>spectral diffusion</kwd><kwd>stimulated photon echo</kwd><kwd>inhomogeneous broadening</kwd><kwd>collision with a change in particle velocity</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">R. L. Shoemaker, J. I. Steinfeld. Laser and Coherence Spectroscopy, Academic Press, New York-London (1978)</mixed-citation><mixed-citation xml:lang="en">R. L. Shoemaker, J. I. Steinfeld. 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