QED calculation of the 2p1/2-2s and 2p3/2-2s transition energies and the ground-state hyperfine splitting in lithiumlike scandium

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dc.creatorKozhedub, Y. S.
dc.creatorGlazov, D. A.
dc.creatorArtemyev, A. N.
dc.creatorOreshkina, N. S.
dc.creatorShabaev, V. M.
dc.creatorTupitsyn, I. I.
dc.creatorVolotka, A. V.
dc.creatorPlunien, G.
dc.date2007-04-21
dc.date2007-07-23
dc.date.accessioned2026-07-07T08:22:00Z
dc.date.available2026-07-07T08:22:00Z
dc.descriptionWe 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 ${\rm Sc}^{18+}$. 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.
dc.description10 pages, 2 tables
dc.identifierhttps://arxiv.org/abs/0704.2822
dc.identifierhttp://arxiv.org/abs/0704.2822
dc.identifierPhys. Rev. A 76, 012511 (2007)
dc.identifierdoi:10.1103/PhysRevA.76.012511
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/135509
dc.subjectAtomic Physics
dc.titleQED calculation of the 2p1/2-2s and 2p3/2-2s transition energies and the ground-state hyperfine splitting in lithiumlike scandium
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