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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">npe</journal-id><journal-title-group><journal-title xml:lang="ru">Ядерная физика и инжиниринг</journal-title><trans-title-group xml:lang="en"><trans-title>Nuclear Physics and Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-5629</issn><issn pub-type="epub">2079-5637</issn><publisher><publisher-name>МИФИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.56304/S2079562924060460</article-id><article-id custom-type="edn" pub-id-type="custom">VJZTCV</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-421</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>Материалы и технология для новых источников энергии</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Materials and Technologies for New Sources of Energy</subject></subj-group></article-categories><title-group><article-title>О ВОЗМОЖНОСТИ ЭКСПЕРИМЕНТАЛЬНОГО СРАВНЕНИЯ ИЗОМЕРНОГО ОТНОШЕНИЯ ДЛЯ ЯДЕР 186RE ПРИ РАДИАЦИОННОМ ЗАХВАТЕ РЕАКТОРНЫХ ТЕПЛОВЫХ И НАДТЕПЛОВЫХ НЕЙТРОНОВ ПРИРОДНЫМ РЕНИЕМ</article-title><trans-title-group xml:lang="en"><trans-title>ON THE POSSIBILITY OF EXPERIMENTAL COMPARISON OF THE ISOMERIC RATIO FOR 186RE NUCLEI IN RADIATIVE CAPTURE OF REACTOR THERMAL AND EPITHERMAL NEUTRONS BY NATURAL RHENIUM</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>Волчихина</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Volchikhina</surname><given-names>Yu. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гордеева</surname><given-names>Д. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Gordeeva</surname><given-names>D. M.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зырянова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zyryanova</surname><given-names>A. A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кольцов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Koltsov</surname><given-names>V. V.</given-names></name></name-alternatives><email xlink:type="simple">vladimir-koltsov@yandex.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>Русских</surname><given-names>И. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Russkikh</surname><given-names>I. M.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Яковлев</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakovlev</surname><given-names>V. A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>АО “Институт реакторных материалов”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Reactor Materials</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>АО “Радиевый институт им. В.Г. Хлопина”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Khlopin Radium Institute</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>08</day><month>01</month><year>2025</year></pub-date><volume>16</volume><issue>1</issue><fpage>51</fpage><lpage>55</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Волчихина Ю.В., Гордеева Д.М., Зырянова А.А., Кольцов В.В., Русских И.М., Яковлев В.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Волчихина Ю.В., Гордеева Д.М., Зырянова А.А., Кольцов В.В., Русских И.М., Яковлев В.А.</copyright-holder><copyright-holder xml:lang="en">Volchikhina Y.V., Gordeeva D.M., Zyryanova A.A., Koltsov V.V., Russkikh I.M., Yakovlev V.A.</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://npe.elpub.ru/jour/article/view/421">https://npe.elpub.ru/jour/article/view/421</self-uri><abstract><p>Перспектива создания аккумулятора энергии на основе ядерного изомера 186mRe (период полураспада 2 ⋅ 105 лет) делает актуальным вопрос о выборе условий облучения реакторными нейтронами природного рения для наработки больших количеств изомера. Известные в литературе расчеты зависимости изомерного отношения при образовании ядер 186Re в основном и изомерном состояниях показывают несущественное различие в эффективности наработки изомера термализованными нейтронами или в активной зоне реактора. Этот вывод ранее был подтвержден экспериментально с точностью до 20%. В настоящей работе предлагается методика более точной экспериментальной проверки результатов расчета изомерного отношения.</p></abstract><trans-abstract xml:lang="en"><p>The prospect of creation of the energy accumulator based on the 186mRe nuclear isomer (a half-life of 2 × 105 yr) requires the choice of conditions of natural rhenium irradiation by reactor neutrons for production of a large amount of the isomer. The known calculations of dependence of the isomeric ratio at formation of 186Re nuclei in ground and isomeric states show insignificant difference between isomer production efficiencies by thermal neutrons and in the core of a reactor. This conclusion has been earlier confirmed experimentally with an accuracy up to 20%. A method for a more accurate experimental test of results of the isomeric ratio calculation has been proposed in this work.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ядерные изомеры</kwd><kwd>изомерное отношение</kwd><kwd>наработка ядерных изомеров</kwd><kwd>реакторный спектр нейтронов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nuclear isomers</kwd><kwd>isomeric ratio</kwd><kwd>production of nuclear isomers</kwd><kwd>reactor spectrum of neutrons</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">Кольцов В.В. // Ядерная физика и инжиниринг. 2021. Т. 12 (3). С. 147−150. [Koltsov V.V. // Phys. At. Nucl. 2021. V. 84 (11). P. 1817].</mixed-citation><mixed-citation xml:lang="en">Кольцов В.В. // Ядерная физика и инжиниринг. 2021. Т. 12 (3). С. 147−150. [Koltsov V.V. // Phys. At. 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