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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-249</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>ВЛИЯНИЕ КОНФИГУРАЦИОННОГО ВЗАИМОДЕЙСТВИЯ РЕДКОЗЕМЕЛЬНЫХ ИОНОВ НА ИНТЕНСИВНОСТИ ИХ МЕЖМУЛЬТИПЛЕТНЫХ ПЕРЕХОДОВ</article-title><trans-title-group xml:lang="en"><trans-title>EFFECT OF CONFIGURATION INTERACTION OF RARE-EARTH ION STATES ON THE INTENSITY OF INTERMULTIPLET TRANSITIONS</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>Дунина</surname><given-names>Е. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Dunina</surname><given-names>E. B.</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>Фомичева</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Fomicheva</surname><given-names>L. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Корниенко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kornienko</surname><given-names>A. A.</given-names></name></name-alternatives><email xlink:type="simple">a_a_kornienko@mail.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>Григорьева</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Grigoreva</surname><given-names>M. V.</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>Витебский государственный технологический университет</institution></aff><aff xml:lang="en"><institution>Vitebsk State Technological University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет информатики и радиоэлектроники</institution></aff><aff xml:lang="en"><institution>Belarusian State University of Informatics and Radioelectronics</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>3</issue><fpage>398</fpage><lpage>406</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Дунина Е.Б., Фомичева Л.А., Корниенко А.А., Григорьева М.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Дунина Е.Б., Фомичева Л.А., Корниенко А.А., Григорьева М.В.</copyright-holder><copyright-holder xml:lang="en">Dunina E.B., Fomicheva L.A., Kornienko A.A., Grigoreva M.V.</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/249">https://zhps.ejournal.by/jour/article/view/249</self-uri><abstract><p>На примере ионов Pr3+ , Tm3+ , Er3+ выполнен анализ волновых функций и влияния конфигурационного взаимодействия на интенсивности полос поглощения. Обращено внимание на тот факт, что из-за сильного спин-орбитального взаимодействия волновые функции редкоземельных ионов представляют собой многокомпонентные суперпозиции из “чистых” мультиплетов2S+ 1  LJ с разными значениями S, L и одинаковыми значениями момента J. По этой причине влияние конфигурационного взаимодействия зависит не только от энергетического зазора до возбужденных конфигураций, но и от наличия компонент2S+ 1  LJ с большими энергиями. Присутствие таких компонент обеспечивает сильное влияние конфигурационного взаимодействия даже на глубоколежащие уровни. Другое следствие многокомпонентного состава волновых функций - образование групп сильно взаимосвязанных состояний. При недостаточно полном учете конфигурационного взаимодействия ошибка в описании сил осцилляторов распределяется между всеми состояниями группы, а низкая общая точность описания не воспринимается как противоречие теории. Для подтверждения выдвинутых предположений выполнено описание сил осцилляторов абсорбционных переходов лазерных материалов, активированных ионами Pr3+ , Tm3+ , Er3+ , по модифицированной теории Джадда-Офельта. </p></abstract><trans-abstract xml:lang="en"><p>We present the analysis of wave functions and the effect of configuration interaction on the intensity of absorption bands for Pr3+ , Tm3+ , and Er3+ ions. It is shown that due to the strong spin-orbit interaction the wave functions of rare-earth ions are multicomponent superpositions of “pure”2S+ 1  LJ multiplets with different values of S and L and the same values of the angular momentum J. For this reason, the effect of configurational interaction depends not only on the energy gap up to excited configurations, but also on the presence of high-energy2S+ 1  LJ components. The presence of such components wields a strong influence on the configuration interaction even at the deep layers. Another consequence of the multicomponent composition of the wave functions is the formation of groups of strongly interrelated states. When the configuration interaction is not fully taken into account, the error in describing the oscillator strengths is distributed among all the states of the group, and the low overall accuracy of the description is not perceived as a contradiction to the theory. To confirm the proposed assumptions, the oscillator strengths of the absorption transitions of laser materials activated by Pr3+ , Tm3+, and Er3+ ions are described using the modified Judd-Ofelt theory. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>редкоземельные ионы</kwd><kwd>конфигурационное взаимодействие</kwd><kwd>модифицированная теория Джадда</kwd><kwd>Офельта</kwd><kwd>rare-earth ions</kwd><kwd>configuration interaction</kwd><kwd>modified Judd-Ofelt theory</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">B. R. Judd. Phys. Rev., 127, N 3 (1962) 750-761</mixed-citation><mixed-citation xml:lang="en">B. R. Judd. Phys. Rev., 127, N 3 (1962) 750-761</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">G. S. Ofelt. J. Chem. 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