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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/S2079562923030089</article-id><article-id custom-type="edn" pub-id-type="custom">ONMSYG</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-371</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>Безопасное обращение с ядерными материалами</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Safe Handling of Nuclear Materials</subject></subj-group></article-categories><title-group><article-title>НЕЙТРОННЫЕ МЕТОДЫ ОБНАРУЖЕНИЯ ОБОГАЩЕННОГО УРАНА В ОБРАЗЦЕ</article-title><trans-title-group xml:lang="en"><trans-title>Neutron Methods for Detecting Enriched Uranium in a Sample</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>Блохин</surname><given-names>Н. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Blokhin</surname><given-names>N. O.</given-names></name></name-alternatives><email xlink:type="simple">Blohinnikitka@yandex.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>Рябева</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ryabeva</surname><given-names>E. V.</given-names></name></name-alternatives><email xlink:type="simple">Blohinnikitka@yandex.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>Ибрагимов</surname><given-names>Р. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Ibragimov</surname><given-names>R. F.</given-names></name></name-alternatives><email xlink:type="simple">Blohinnikitka@yandex.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>Чакилев</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chakilev</surname><given-names>O. V.</given-names></name></name-alternatives><email xlink:type="simple">Blohinnikitka@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский ядерный университет МИФИ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>17</day><month>12</month><year>2024</year></pub-date><volume>15</volume><issue>3</issue><fpage>211</fpage><lpage>217</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Блохин Н.О., Рябева Е.В., Ибрагимов Р.Ф., Чакилев О.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Блохин Н.О., Рябева Е.В., Ибрагимов Р.Ф., Чакилев О.В.</copyright-holder><copyright-holder xml:lang="en">Blokhin N.O., Ryabeva E.V., Ibragimov R.F., Chakilev O.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://npe.elpub.ru/jour/article/view/371">https://npe.elpub.ru/jour/article/view/371</self-uri><abstract><p>В работе рассмотрены основные пассивные и активные нейтронные методы обнаружения делящегося вещества в образце, применяемые, например, в досмотровых установках и при контроле отходов ядерного топливного цикла. Приведены расчеты для оценки возможности использования данных методов при обнаружении обогащенного урана. Подробно рассмотрен метод по анализу времени жизни нейтрона в материалах установки (DDA). Разработана модель для обнаружения наличия 235U в образце DDA методом с использованием инструментов пакета программ Geant4. В разработанной модели предложен и проверен критерий определения массы U235. Предлагаемые модель и критерий могут значительно упростить процесс разработки и оптимизации параметров дорогостоящих устройств по обнаружению делящихся веществ за счет создания цифровой модели</p></abstract><trans-abstract xml:lang="en"><p>We considered the main passive and active neutron methods for detecting fissile material in a sample which are used for example, in inspection installations and in the control of waste from the nuclear fuel cycle. Calculations are presented to assess the possibilities of using these methods to detect enriched uranium. The Differential die away analysis is considered in detail. A model has been developed for detecting the presence of U235 in a sample by using DDAA with Geant4 [<xref ref-type="bibr" rid="cit1">1</xref>] software package. In the developed model, a criterion for determining the mass of U235 is proposed and verified. The proposed model and criterion can significantly simplify the process of developing and optimizing the parameters of expensive devices for detecting fissile substances by creating a digital model.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>DDDA</kwd><kwd>Geant4</kwd><kwd>ДВ</kwd><kwd>моделирование</kwd><kwd>нейтронные методы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>DDDA</kwd><kwd>Geant4</kwd><kwd>DV</kwd><kwd>modeling</kwd><kwd>neutron methods</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">Martinik T. Development of Differential Die-Away Instrument for Characterization of Swedish Spent Nuclear Fuel. Дис. на соискание степени лиценциата. Швеция. 2015.</mixed-citation><mixed-citation xml:lang="en">Martinik T. Development of Differential Die-Away Instrument for Characterization of Swedish Spent Nuclear Fuel. Дис. на соискание степени лиценциата. Швеция. 2015.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Vichaidid T. et al. // Kasetsart J. Nat. Sci. 2008. V. 42. P. 333.</mixed-citation><mixed-citation xml:lang="en">Vichaidid T. et al. // Kasetsart J. Nat. Sci. 2008. V. 42. P. 333.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Ritter S. // arXiv: 2110.11506. 2021.</mixed-citation><mixed-citation xml:lang="en">Ritter S. // arXiv: 2110.11506. 2021.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Dubi C. et al. // Nucl. Instrum. Methods Phys. Res., Sect. A. 2017. V. 875. P. 125.</mixed-citation><mixed-citation xml:lang="en">Dubi C. et al. // Nucl. Instrum. Methods Phys. Res., Sect. A. 2017. V. 875. P. 125.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Martinik T. et al. // Nucl. Instrum. Methods Phys. Res., Sect. A. 2016. V. 821. P. 55.</mixed-citation><mixed-citation xml:lang="en">Martinik T. et al. // Nucl. Instrum. Methods Phys. Res., Sect. A. 2016. V. 821. P. 55.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Batyaev V.F., Bochkarev O.V., Sklyarov S.V. Nucl. Instrum. Methods Phys. Res., Sect. A. 2014. V. 27. P. 1460130.</mixed-citation><mixed-citation xml:lang="en">Batyaev V.F., Bochkarev O.V., Sklyarov S.V. Nucl. Instrum. Methods Phys. Res., Sect. A. 2014. V. 27. P. 1460130.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Israelashvili I. et al. // Nucl. Instrum. Methods Phys. Res., Sect. A. 2015. V. 785. P. 14.</mixed-citation><mixed-citation xml:lang="en">Israelashvili I. et al. // Nucl. Instrum. Methods Phys. Res., Sect. A. 2015. V. 785. P. 14.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Geant4 Collab. Introduction to GEANT4 User Documentation. 2010.</mixed-citation><mixed-citation xml:lang="en">Geant4 Collab. Introduction to GEANT4 User Documentation. 2010.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Tushar Roy et al. // Proc. DAE-BRNS Symp. Nucl. Phys. 2016. P. 61.</mixed-citation><mixed-citation xml:lang="en">Tushar Roy et al. // Proc. DAE-BRNS Symp. Nucl. Phys. 2016. P. 61.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
