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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-2409</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>Использование множественного рождения гамма-квантов в гадолинийсодержащих неорганических сцинтилляторах для улучшения селективности регистрации нейтронов</article-title><trans-title-group xml:lang="en"><trans-title>Improvement in Neutron Detector Selectivity by Utilizing Multiple Gamma-Quantum Production in Gadolinium-Containing Inorganic Scintillators</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>Охотникова</surname><given-names>К. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Okhotnikova</surname><given-names>K. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><email xlink:type="simple">okhotnikova.k.e@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>Мечинский</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mechinsky</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</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>Коржик</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Korjik</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</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>Дубов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dubov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карпюк</surname><given-names>П. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Karpyuk</surname><given-names>P. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Комендо</surname><given-names>И. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Komendo</surname><given-names>I. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смыслова</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Smyslova</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федоров</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedorov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</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>Тимощенко</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Timoshchenko</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт ядерных проблем Белорусского государственного университета</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Institute for Nuclear Problems, Belarusian State University</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт ядерных проблем Белорусского государственного университета; НИЦ “Курчатовский институт”</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Institute for Nuclear Problems, Belarusian State University; National Research Center “Kurchatov Institute”</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>НИЦ “Курчатовский институт”</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>National Research Center “Kurchatov Institute”</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Менделеевский университет химической технологии</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Mendeleev University of Chemical Technology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian State University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>28</day><month>09</month><year>2026</year></pub-date><volume>93</volume><issue>5</issue><fpage>669</fpage><lpage>675</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Охотникова К.Е., Мечинский В.А., Коржик М.В., Дубов В.В., Карпюк П.В., Комендо И.Ю., Смыслова В.Г., Федоров А.А., Тимощенко А.И., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Охотникова К.Е., Мечинский В.А., Коржик М.В., Дубов В.В., Карпюк П.В., Комендо И.Ю., Смыслова В.Г., Федоров А.А., Тимощенко А.И.</copyright-holder><copyright-holder xml:lang="en">Okhotnikova K.E., Mechinsky V.A., Korjik M.V., Dubov V.V., Karpyuk P.V., Komendo I.Y., Smyslova V.G., Fedorov A.A., Timoshchenko A.I.</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/2409">https://zhps.ejournal.by/jour/article/view/2409</self-uri><abstract><p>Показано, что явление множественного рождения гамма-квантов в результате реакции радиационного захвата нейтронов ядрами гадолиния может быть использовано для повышения селективности сцинтилляционных детекторов к нейтронам. Предложена конструкция детектора, в котором 16 оптически изолированных элементов гадолинийсодержащего сцинтиллятора прикреплены к 16-канальной матрице фотоприемников, а отбор событий осуществляется в режиме совпадений по числу каналов, от которых получен сигнал. Показано, что отбор событий, при регистрации которых сработало три и более каналов, подавляет скорость счета фоновых гамма-квантов в 114 раз, а скорость счета нейтронов в 21 раз, что увеличивает селективность детектора к нейтронам в 5.6 раза.</p></abstract><trans-abstract xml:lang="en"><p>It was shown that the phenomenon of multiple gamma-quantum production resulting from the radiative capture of neutrons by gadolinium nuclei can be used to increase the neutron selectivity of scintillation detectors. A detector design is proposed in which 16 optically isolated gadolinium containing scintillators are connected to the silicon photomultipliers matrix, and event selection is performed in coincidence mode based on the number of channels from which a signal is received. It is shown that selecting events for which three or more channels were triggered, suppresses the background gamma-quantum counting rate by 114 times and the neutron counting rate by 21 times, thereby increasing the neutron selectivity by 5.6 times.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нейтронный детектор</kwd><kwd>n/γ-дискриминация</kwd><kwd>сцинтиллятор</kwd><kwd>гадолиний-алюминий-галлиевый гранат</kwd><kwd>вторичные частицы</kwd><kwd>гамма-кванты</kwd></kwd-group><kwd-group xml:lang="en"><kwd>neutron detector</kwd><kwd>n/γ-discrimination</kwd><kwd>scintillator</kwd><kwd>gadolinium-aluminum-gallium garnet</kwd><kwd>secondary particles</kwd><kwd>gamma rays</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена за счет гранта Российского научного фонда  № 25-73-30014, https://rscf.ru/project/25-73-30014/.</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">F. 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