УДОСКОНАЛЕНИЙ РЕЛЯТИВІСТСЬКИЙ ПІДХІД В СПЕКТРОСКОПІЇ СКЛАДНИХ АВТОІОНІЗАЦІЙНИХ РЕЗОНАНСІВ В АТОМНИХ СПЕКТРАХ

A. V. Smirnov, O. Yu. Khetselius, V. V. Buyadzhi, A. S. Belodonov

Анотація


В роботі розвивається вдосконалений релятивістський підхід до вивчення параметрів автоіонізаціонних резонансів в атомних системах, який ґрунтується на узагальненому енергетичному підході (S-матричний формалізм Гелл-Манна і Лоу) і релятивістської багаточастинковій теорії 123 збурень з нульовим наближенням Дірака-Кона-Шема і акуратним урахуванням обмінно-кореляційних, релятивістських ефектів. Оптимізація базису релятивістських орбіталей зводиться до мінімізації калібрувально-залежного багатоелектронного вкладу від обмінно-кореляційних поправок КЕД теорії збурень в радіаційні ширини атомних рівнів, що в свою чергу, зводиться до вирішення системи рівнянь типу Дірака-Кона-Шема для електронної густини. В якості ілюстрації можливостей запропонованого підходу наведені дані по енергії і ширині автоіонізаційного резонансу 3s3p 1 Р0 в спектрі атома гелію і проведено порівняння з наявними експериментальними даними і результатами інших теорій, в тому числі, методом комплексного обертання Хо, алгебраїчного підходу Wakid-Callaway, методу діагоналізації Senashenko-Wague і т.і.

Ключові слова


спектроскопія автоіонізаційних резонансів; удосконалений релятивістський підхід; гелій

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Посилання


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