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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-1776</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>АННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ABSTRACTS ENGLISH-LANGUAGE ARTICLES</subject></subj-group></article-categories><title-group><article-title>Самофокусировка асимметричных лазерных пучков Эйри–Гаусса в плазме с экспоненциальным распределением плотности</article-title><trans-title-group xml:lang="en"><trans-title>SELF-FOCUSING OF ASYMMETRIC FINITE AIRY–GAUSSIAN LASER BEAMS IN PLASMA WITH EXPONENTIAL DENSITY RAMP</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>Nikam</surname><given-names>P. P.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikam</surname><given-names>P. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сангли, Махараштра</p></bio><bio xml:lang="en"><p>Sangli, Maharashtra</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>Pawar</surname><given-names>V. S.</given-names></name><name name-style="western" xml:lang="en"><surname>Pawar</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ичалкаранджи, Махараштра</p></bio><bio xml:lang="en"><p>Ichalkaranji, Maharashtra,</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>Patil</surname><given-names>P. P.</given-names></name><name name-style="western" xml:lang="en"><surname>Patil</surname><given-names>P. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Арджуннагар, Махараштра</p></bio><bio xml:lang="en"><p>Arjunnagar, Maharashtra</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>Takale</surname><given-names>M. V.</given-names></name><name name-style="western" xml:lang="en"><surname>Takale</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Колхапур, Махараштра</p></bio><bio xml:lang="en"><p>Kolhapur, Maharashtra</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>Patil</surname><given-names>S. D.</given-names></name><name name-style="western" xml:lang="en"><surname>Patil</surname><given-names>S. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Арджуннагар, Махараштра</p></bio><bio xml:lang="en"><p>Arjunnagar, Maharashtra</p></bio><email xlink:type="simple">sdpatil_phy@rediffmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Колледж искусств и наук Кастурбай Валчанд</institution></aff><aff xml:lang="en"><institution>Department of Physics, Smt. Kasturbai Walchand College of Arts and Science</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Физический факультет, D.K.A.S.C.</institution></aff><aff xml:lang="en"><institution>Department of Physics, D.K.A.S.C.</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Колледж Девчанд</institution></aff><aff xml:lang="en"><institution>Department of Physics, Devchand College</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Университет Шиваджи</institution></aff><aff xml:lang="en"><institution>Department of Physics, Shivaji University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>07</day><month>02</month><year>2025</year></pub-date><volume>92</volume><issue>1</issue><fpage>137</fpage><lpage>137</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Nikam P.P., Pawar V.S., Patil P.P., Takale M.V., Patil S.D., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Nikam P.P., Pawar V.S., Patil P.P., Takale M.V., Patil S.D.</copyright-holder><copyright-holder xml:lang="en">Nikam P.P., Pawar V.S., Patil P.P., Takale M.V., Patil S.D.</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/1776">https://zhps.ejournal.by/jour/article/view/1776</self-uri><abstract><p>На основе параксиального и квазиклассического приближений на основе распределения плотности исследована самофокусировка асимметричных конечных пучков Эйри–Гаусса (AiG) в плазме. Рассматривается релятивистская нелинейность диэлектрической проницаемости плазмы. Распределение электрического поля асимметричных конечных пучков AiG выражается через параметры ширины пучка f1 и f2 с соответствующими параметрами модуляции a и b для поперечных размеров пучка. Связанные дифференциальные уравнения, управляющие поведением f1 и f2 с безразмерным расстоянием распространения ξ, устанавливаются из параболического уравнения. Обсуждается влияние профиля экспоненциального распределения плотности на самофокусировку асимметричных конечных пучков AiG. Особо выделена чувствительность асимметрии в параметрах a и b конечного пучка AiG и экспоненциального распределения плотности плазмы. </p></abstract><trans-abstract xml:lang="en"><p>Based on paraxial and Wentzel-Kramers-Brillouin (WKB) approximations, we investigated density transition-based self-focusing of asymmetric finite Airy–Gaussian (AiG) beams in plasma. The relativistic nonlinearity in the dielectric constant of plasma is considered. The electric field distribution of asymmetric finite AiG beams is expressed in terms of beam-width parameters f1 and f2 with respective modulation parameters a and b in transverse dimensions of the beam. The coupled differential equations governing the behavior of f1 and f2 with dimensionless propagation distance ξ are established from the parabolic equation approach. The effect of the exponential density ramp profile on the self-focusing of asymmetric finite AiG beams is presented. The sensitiveness of asymmetry in a and b parameters of finite AiG beam and exponential density ramp of plasma is specifically highlighted. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>пучок Эйри–Гаусса</kwd><kwd>экспоненциальное распределение плотности</kwd><kwd>самофокусировка</kwd><kwd>плазма</kwd></kwd-group><kwd-group xml:lang="en"><kwd>finite Airy–Gaussian</kwd><kwd>exponential density</kwd><kwd>self-focusing</kwd><kwd>plasma</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">M. Vranic, R. A. Fonseca, L. O. Silva, Plasma Phys. Control. Fusion, 60, 034002 (2018).</mixed-citation><mixed-citation xml:lang="en">M. Vranic, R. A. Fonseca, L. O. Silva, Plasma Phys. Control. Fusion, 60, 034002 (2018).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">R. A. Ganeev, Sci. 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