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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-1375</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>Точные длины волн ридберговских переходов 4p(2P1/2)→nd 2D3/2 и 4p(2P3/2)→nd 2D3/2,5/2 в нейтральном атоме калия, рассчитанные через константы экранирования на единицу ядерного заряда</article-title><trans-title-group xml:lang="en"><trans-title>Precise Wavelengths of 4p(2P1/2)→nd 2D3/2 and 4p(2P3/2)→nd 2D3/2,5/2 Rydberg Transitions in Neutral Potassium Calculated via the Screening Constant Per Unit Nuclear Charge Method</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>Sakho</surname><given-names>I.</given-names></name><name name-style="western" xml:lang="en"><surname>Sakho</surname><given-names>I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тиес</p></bio><bio xml:lang="en"><p>Thiès</p></bio><email xlink:type="simple">aminafatima_sakho@yahoo.fr</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет Иба Дер Тиам</institution></aff><aff xml:lang="en"><institution>Département Physique Chimie, UFR Sciences et Technologies, Université Iba Der Thiam</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>29</day><month>08</month><year>2023</year></pub-date><volume>90</volume><issue>4</issue><fpage>664</fpage><lpage>664</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Sakho I., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Sakho I.</copyright-holder><copyright-holder xml:lang="en">Sakho I.</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/1375">https://zhps.ejournal.by/jour/article/view/1375</self-uri><abstract><p>Фотоионизация нейтрального атома калия K I исследована в рамках формализма константы экранирования на единицу заряда ядра (SCUNC). Рассчитаны энергии и длины волн ридберговских переходов 4p(2P1/2)→nd 2D3/2 и 4p(2P3/2)→nd 2D3/2,5/2 для 20 ≤ n ≤ 100. Длины волн SCUNC являются первыми расчетами, которые хорошо согласуются с экспериментальными измерениями до n = 70 с использованием линейно поляризованного лазерного излучения. Максимальный сдвиг длин волн относительно экспериментальных данных составляет 0.03 нм до n = 70. Получены значения длин волн для n = 71–100 и энергий переходов для n = 20–100.</p></abstract><trans-abstract xml:lang="en"><p>Photoionization of neutral potassium K I is investigated in the framework of the screening constant per unit nuclear charge (SCUNC) method. Transition energies and wavelengths belonging to 4p(2P1/2)→nd 2D3/2 and 4p(2P3/2)→nd 2D3/2,5/2 Rydberg transitions are reported. Accurate transition energies and wavelengths originating from 4p(2P1/2,3/2) levels of K I are tabulated for 20 ≤ n ≤ 100. The SCUNC wavelengths are believed to be the first calculations that agree excellently with the existing experimental measurements up to n = 70 using linearly polarized laser light. The maximum shift in wavelengths relative to the experimental data is at 0.03 nm up to n = 70. New wavelengths are tabulated for n = 71–100 along with new transition energies for n = 20–100.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фотоионизация</kwd><kwd>энергия переходов</kwd><kwd>длина волны</kwd><kwd>ридберговский переход</kwd><kwd>нейтральный калий K I</kwd><kwd>константа экранирования на единицу заряда ядра</kwd></kwd-group><kwd-group xml:lang="en"><kwd>photoionization</kwd><kwd>transition energies</kwd><kwd>wavelengths</kwd><kwd>Rydberg transition</kwd><kwd>neutral K I</kwd><kwd>screening constant per unit nuclear charge</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">I. M. 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