DOI: https://doi.org/10.18524/0235-2435.2018.27.150538

Хвильові і осциляторні сильні сторони Li-подібних багатозарядних іонів в рамках теорії відносного збудження багатьох тіл

O. Yu. Khetselius, A. I. Mykhailov, E. A. Efimova, R. E. Serga

Анотація


Релятивістська багаточастинкова  теорія збурень з оптимізованим нульовим наближенням Дірака-Кона-Шема застосована для розрахунку довжин хвиль радіаційних переходів і сил осциляторів для деяких Li-подібних багатозарядних іонів. Релятивістські, обмінно-кореляційні та інші поправки враховуються в рамках послідовних процедур. Оптимізований базис релятивістських орбіталей генерується в послідовному нульовому наближенні релятивістської багаточастинкової теорії збурень, виходячи з умови виконання принципу калібрувальної інваріантності. Запропоновано процедуру акуратного урахування вкладів, описуваних діаграмами Фейнмана четвертого порядку КЕД теорії збурень (другий порядок атомної теорії збурень), в уявну частину енергетичного зсуву атомних рівнів (радіаційні ширини) багатоелектронних атомів з метою врахування багаточастинкових кореляційних ефектів. Отримані дані по довжинам хвиль радіаційних переходів та силам осциляторів для деяких переходів у спектрах Li-подібних багатозарядних іонів, які порівнюються з альтернативними теоретичними і експериментальними результатами

Ключові слова


Relativistic many-body perturbation theory; Optimal one-quasiparticle representation; Oscillator strengths; Energy approach; Correlation corrections

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Посилання


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