DOI: https://doi.org/10.18524/0235-2435.2019.28.194292

SPECTROSCOPY OF MULTIELECTRON ATOM IN DC ELECTRIC FIELD: RELATIVISTIC OPERATOR PERTURBATION THEORY

A. A. Kuznetsova, A. V. Glushkov, E. S. Romanenko, E. K. Plisetskaya

Анотація


We develop the theoretical basis of a new relativistic operator perturbation theory  approach to multielectron atom in a DC electric field combined with a relativistic many-body perturbation theory formalism for a free multielectron atom. As illustration of application of the presented formalism, the results of energy and spectral parameters for a number of atoms are presented. The relativistic  OPT  method is tested for computing the Stark shifts of Rydberg states for a few the multielectron systems such as the sodium and rubidium. The approach allows an accurate and consistent treatment of a DC strong field Stark effect in multielectron atoms.

Ключові слова


multielectron atom; electric field; relativistic operator perturbation theory; Rydberg states

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Посилання


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