Five lowest 1S states of the Be atom calculated with a finite-nuclear-mass approach and with relativistic and QED corrections
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Date
2009
Authors
Stanke, Monika
Komasa, Jacek
Bubin, Sergiy
Adamowicz, Ludwik
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Journal ISSN
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Abstract
We have performed very accurate quantum mechanical calculations of the five lowest S states of the
beryllium atom. In the nonrelativistic part of the calculations we used the variational method and we explicitly
included the nuclear motion in the Schrödinger equation. The nonrelativistic wave functions of the five states
were expanded in terms of explicitly correlated Gaussian functions. These wave functions were used to
calculate the leading 2 relativistic correction is the fine structure constant and the 3 quantum electrodynamics
QED correction. We also estimated the 4 QED correction by calculating its dominant component. A
comparison of the experimental transition frequencies with the frequencies obtained based on the energies
calculated in this work shows an excellent agreement
Description
Keywords
Research Subject Categories::NATURAL SCIENCES::Physics, quantum mechanical calculations, beryllium atom
Citation
Monika Stanke, Jacek Komasa, Sergiy Bubin, Ludwik Adamowicz; 2009; Five lowest 1S states of the Be atom calculated with a finite-nuclear-mass approach and with relativistic and QED corrections; PHYSICAL REVIEW A