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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Cosmic Research</journal-id><journal-title-group><journal-title xml:lang="en">Cosmic Research</journal-title><trans-title-group xml:lang="ru"><trans-title>Космические исследования</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0023-4206</issn><issn publication-format="electronic">3034-5502</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">689486</article-id><article-id pub-id-type="doi">10.31857/S0023420625030013</article-id><article-id pub-id-type="edn">PZJOEF</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Generation and dynamics of the Hall magnetic field during Sub-Alfven plasma expansion in the kinetic regime</article-title><trans-title-group xml:lang="ru"><trans-title>Генерация и динамика магнитного поля Холла при суб-Альвеновском разлете плазмы в кинетическом режиме</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Divin</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Дивин</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.divin@spbu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chibranov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Чибранов</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.divin@spbu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Paramonik</surname><given-names>I. P.</given-names></name><name xml:lang="ru"><surname>Парамоник</surname><given-names>И. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.divin@spbu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zakharov</surname><given-names>Yu. P.</given-names></name><name xml:lang="ru"><surname>Захаров</surname><given-names>Ю. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.divin@spbu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Berezutsky</surname><given-names>A. G.</given-names></name><name xml:lang="ru"><surname>Березуцкий</surname><given-names>А. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.divin@spbu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Posukh</surname><given-names>V. G.</given-names></name><name xml:lang="ru"><surname>Посух</surname><given-names>В. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.divin@spbu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rumenskikh</surname><given-names>M. S.</given-names></name><name xml:lang="ru"><surname>Руменских</surname><given-names>М. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.divin@spbu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kropotina</surname><given-names>J. A.</given-names></name><name xml:lang="ru"><surname>Кропотина</surname><given-names>Ю. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.divin@spbu.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shaikhislamov</surname><given-names>I. F.</given-names></name><name xml:lang="ru"><surname>Шайхисламов</surname><given-names>И. Ф.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.divin@spbu.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Saint Petersburg State University</institution></aff><aff><institution xml:lang="ru">Санкт-Петербургский Государственный Университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Institute of Laser Physics SB RAS</institution></aff><aff><institution xml:lang="ru">Институт лазерной физики Сибирского отделения Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Ioffe Institute RAS</institution></aff><aff><institution xml:lang="ru">Физико-технический институт им. А.Ф. Иоффе</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-06-15" publication-format="electronic"><day>15</day><month>06</month><year>2025</year></pub-date><volume>63</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>223</fpage><lpage>238</lpage><history><date date-type="received" iso-8601-date="2025-08-18"><day>18</day><month>08</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-08-18"><day>18</day><month>08</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0023-4206/article/view/689486">https://journals.eco-vector.com/0023-4206/article/view/689486</self-uri><abstract xml:lang="en"><p>The paper presents a complex study of the Hall effect during the expansion of a spherical plasma cloud into a medium with a uniform external magnetic field. The results were obtained in a laboratory experiment on the KI-1 plasma facility and three-dimensional numerical modeling using the “particle-in-cell” method. The data obtained are in good qualitative and quantitative agreement and demonstrate that when the plasma cloud expands in a regime where the Larmor radius of ions <italic>R</italic><italic><sub>L</sub></italic> is comparable to the scale of the diamagnetic cavity <italic>R</italic><italic><sub>b</sub></italic>, a large-scale antisymmetric magnetic fields structure is formed, caused by Hall effects. In this case, both internal and external Hall magnetic structures are observed. The work demonstrates the coherence between Hall effects and the diamagnetic cavity collapse, which occurs as the transfer of a magnetic field by Hall electrons currents at an anomalously high speed.</p></abstract><trans-abstract xml:lang="ru"><p>В работе представлено комплексное исследование эффекта Холла при разлете сферического плазменного облака в среду с однородным внешним магнитным полем. Результаты были получены в лабораторном эксперименте на плазменном комплексе КИ-1 и трехмерном численном моделировании методом “частица в ячейке”. Полученные данные хорошо качественно и количественно согласуются и демонстрируют, что при разлете плазменного облака в режиме, когда Ларморовский радиус ионов <italic>R</italic><italic><sub>L</sub></italic> сравним с масштабами диамагнитной каверны <italic>R</italic><italic><sub>b</sub></italic>, формируется крупномасштабная антисимметричная структура магнитных полей, вызванная Холловскими эффектами. При этом наблюдаются Холловские магнитные структуры, как внутренняя, так и внешняя. В работе демонстрируется связь Холловских эффектов с коллапсом диамагнитной каверны, протекающим как внос магнитного поля Холловскими токами электронов с аномально высокой скоростью.</p></trans-abstract><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский научный фонд</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap></funding-source><award-id>23-22-00386</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Райзер Ю.П. О торможении и превращениях энергии плазмы, расширяющейся в пустом пространстве, в котором имеется магнитное поле // Прикладная механика и техническая физика. 1963. № 6. 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