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Article overview
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QED calculation of the 2p1/2-2s and 2p3/2-2s transition energies and the
ground-state hyperfine splitting in lithiumlike scandium | | Y. S. Kozhedub
; D. A. Glazov
; A. N. Artemyev
; N. S. Oreshkina
; V. M. Shabaev
; I. I. Tupitsyn
; A. V. Volotka
; G. Plunien
; | | Date: |
21 Apr 2007 | | Subject: | Atomic Physics (physics.atom-ph) | | Abstract: | We present the most accurate up-to-date theoretical values of the
${2p_{1/2}}$-${2s}$ and ${2p_{3/2}}$-${2s}$ transition energies and the
ground-state hyperfine splitting in ${
m Sc}^{18+}$. All two- and
three-electron contributions to the energy values up to the two-photon level
are treated in the framework of bound-state QED without $aZ$-expansion. The
interelectronic interaction beyond the two-photon level is taken into account
by means of the large-scale configuration-interaction Dirac-Fock-Sturm (CI-DFS)
method. The relativistic recoil correction is calculated with many-electron
wave functions in order to take into account the electron-correlation effect.
The accuracy of the transition energy values is improved by a factor of five
compared to the previous calculations. The CI-DFS calculation of
interelectronic-interaction effects and the evaluation of the QED correction in
an effective screening potential provide significant improvement for the $2s$
hyperfine splitting. The results obtained are in a good agreement with recently
published experimental data. | | Source: | arXiv, arxiv.0704.2822 | | Services: | Forum | Review | PDF | Favorites | |
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