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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">vestift</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-технических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physical-technical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8358</issn><issn pub-type="epub">2524-244X</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8358-2021-66-2-202-211</article-id><article-id custom-type="elpub" pub-id-type="custom">vestift-668</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>ЭНЕРГЕТИКА, ТЕПЛО- И МАССООБМЕН</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>POWER ENGINEERING, HEAT AND MASS TRANSFER</subject></subj-group></article-categories><title-group><article-title>Развитие пароплазменного облака при лазерном воздействии на образец, находящийся в жидкости</article-title><trans-title-group xml:lang="en"><trans-title>Steam and plasma bubble evolution on laser treating of a sample being in liquid</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>Васильев</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasiliev</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Васильев Сергей Валерьевич – кандидат физико-математических наук, доцент, доцент кафедры электротехники и электроники</p><p>ул. Ожешко, 22, 230023, Гродно, Республика Беларусь</p></bio><bio xml:lang="en"><p>Sergey V. Vasiliev – Ph. D. (Physics and Mathematics), Associate Professor, Associate Professor of the Department of Electrical Engineering and Electronics</p><p>22, Ozheshko Str., 230023, Grodno, Republic of Belarus</p></bio><email xlink:type="simple">s.v.vasiliev@inbox.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>Иванов</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иванов Алексей Юрьевич – доктор физико-математических наук, профессор, заведующий кафедрой теоретической физики и теплотехники</p><p>ул. Ожешко, 22, 230023, Гродно, Республика Беларусь</p></bio><bio xml:lang="en"><p>Aleksey Yu. Ivanov – D. Sc. (Physics and Mathematics), Professor, Head of the Department of Theoretical Physics and Heat Engineering</p><p>22, Ozheshko Str., 230023, Grodno, Republic of Belarus</p></bio><email xlink:type="simple">ion_ne@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>Копыцкий</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kopytskiy</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Копыцкий Андрей Витальевич – магистр естественных наук, преподаватель кафедры медицинской и биологической физики</p><p>ул. Ожешко, 22, 230023, Гродно, Республика Беларусь</p></bio><bio xml:lang="en"><p>Andrey V. Kopytskiy – Master of Sciences, Lecturer of the Department of Medical and Biological Physics</p><p>22, Ozheshko Str., 230023, Grodno, Republic of Belarus</p></bio><email xlink:type="simple">Andrey_Cop@tut.by</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>Ситкевич</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Sitkevich</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ситкевич Анастасия Леонидовна – магистр физико-математических наук, аспирант физико-технического факультета</p><p>ул. Ожешко, 22, 230023, Гродно, Республика Беларусь</p></bio><bio xml:lang="en"><p>Anastasiya L. Sitkevich – Master of Physics and Mathematics, Postgraduate Student of the Faculty of Physics and Technology</p><p>22, Ozheshko Str., 230023, Grodno, Republic of Belarus</p></bio><email xlink:type="simple">girl-physicist@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Гродненский государственный университет имени Янки Купалы</institution></aff><aff xml:lang="en"><institution>Yanka Kupala Grodno State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>16</day><month>07</month><year>2021</year></pub-date><volume>66</volume><issue>2</issue><fpage>202</fpage><lpage>211</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Васильев С.В., Иванов А.Ю., Копыцкий А.В., Ситкевич А.Л., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Васильев С.В., Иванов А.Ю., Копыцкий А.В., Ситкевич А.Л.</copyright-holder><copyright-holder xml:lang="en">Vasiliev S.V., Ivanov A.Y., Kopytskiy A.V., Sitkevich A.L.</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://vestift.belnauka.by/jour/article/view/668">https://vestift.belnauka.by/jour/article/view/668</self-uri><abstract><p>Экспериментально исследован процесс формирования парогазового образования у поверхности облучаемого металла. Изучены особенности изменения формы и размеры парогазового «пузыря» на разных стадиях процесса, в том числе и после завершения лазерной обработки материала. Установлено, что при использовании из- лучения лазера ГОР-100М, работающего в режиме свободной генерации (длительность импульса – 1,2 мс, плотность потока ~ 106 Вт/см2), форма поверхности кратера, формирующегося на поверхности расположенного в воде облучаемого образца, принципиально отличается от топографии лунки, которая сформировалась в результате воздействия лазерного импульса с теми же параметрами на аналогичный образец, окруженный воздухом при нормальном давлении (105 Па). Показано, что существенное отличие формы поверхности кратера, сформировавшегося в результате воздействия лазерного импульса с одинаковыми параметрами на одинаковые образцы, окруженные воздухом и водой, определяется принципиально различным характером течения плазмы и парогазовой смеси в указанных случаях.</p></abstract><trans-abstract xml:lang="en"><p>An object of investigation is pointed - the metal articles being in water and exposed to pulse laser treating. The purpose of research was the investigation of the processes occurring near the metal target treated by pulse laser radiation with flux density ∼106 W/cm–2. The results of the experimental investigation of the pulse laser treating of a led target being in water are described. The process of steam and gas plume generation on the surface of the irradiated metal was investigated experimentally. The features of steam and gas plume form and dimensions evolution on different stages of the process (even after completion of laser treating of the material) were investigated. It is shown that when using GOR-100M operating in free oscillating regime (pulse duration 1.2 ms, laser radiation flux density ∼106 W/cm–2), the form of a crater developed on the irradiated target surface being in water essentially differs from the topography of the crater developed on the analogical target surrounded by air at normal pressure (105 Pa). It is pointed in the conclusions that the substantial difference of the forms of crater surfaces developed as a result of processing of the identical targets being in water or air by laser pulses with the identical parameters , determines by principally different character of plasma and steam and gas mixture flow in the mentioned cases.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>импульсное лазерное излучение</kwd><kwd>скоростная голографическая киносъемка</kwd><kwd>кратер</kwd><kwd>парогазовое образование</kwd><kwd>продукты эрозии</kwd><kwd>различие течения парогазовой смеси</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pulse laser radiation</kwd><kwd>fast holographic filming</kwd><kwd>crater</kwd><kwd>steam and gas plume</kwd><kwd>erosion products</kwd><kwd>different steam and gas mixture flow</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">Гладуш, Г. Г. 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