On calculations of metastable and Rydberg states of diatomic beryllium molecule and antiprotonic helium atom

The computational scheme and calculation results of bound, metastable and Rydberg states of atomic and molecular systems important for laser spectroscopy are presented. The solution to the problem is performed using the authors' software package (see program libraries of the Computer Physics Communications journal and of the Joint Institute for Nuclear Research) that implement the high-accuracy finite element method. The FORTRAN procedure of matching tabulated potential functions with van der Waals asymptotic potential using interpolation Hermite polynomials which provides continuity of both the function itself and its derivative is presented. The efficiency of the proposed approach is demonstrated by calculated for the first time sharp metastable states with complex eigen-energies in a diatomic beryllium molecule and weakly bound Rydberg states of antiprotonic helium atom. © 2020 SPIE.

Авторы
Сборник материалов конференции
Издательство
SPIE
Язык
Английский
Статус
Опубликовано
Номер
114580Q
Том
11458
Год
2020
Организации
  • 1 N.G. Chernyshevsky Saratov National Research State University, Saratov, Russian Federation
  • 2 Joint Institute for Nuclear Research, Dubna, Russian Federation
  • 3 Peoples' Friendship University of Russia, RUDN University, Moscow, 117198, Russian Federation
  • 4 Institute of Mathematics, National University of Mongolia, Ulaanbaatar, Mongolia
  • 5 Institute of Physics, University of M. Curie-Sk Lodowska, Lublin, Poland
  • 6 Institute of Nuclear Physics, Almaty, Kazakhstan
  • 7 Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russian Federation
  • 8 Joint Institute for High Temperatures of RAS, Moscow, Russian Federation
Ключевые слова
Antiprotonic helium; Bound and metastable states; Diatomic beryllium molecule; Eigenvalue problem; Finite element method; Laser spectroscopy; Vibration-rotation states
Дата создания
02.11.2020
Дата изменения
02.11.2020
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/65679/
Поделиться

Другие записи