Electric-dipole transition amplitudes for atoms and ions with one valence electron

Roberts, B. M.; Fairhall, C. J.; Ginges, J. S. M.

doi:10.1103/physreva.107.052812

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Qed Corrections To the E1 Amplitudes In Cs1

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2024

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Cited by 5 publications

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“…The most prominent exception is neutral Cs, where QED corrections to the E1 amplitudes were calculated several times. Sapirstein and Cheng [24] calculated 6s 1/2 − 6p 1/2 amplitude within the one-determinant approximation, while calculations [28][29][30] included correlations, but neglected the vertex correction. Traditionally QED corrections to the E1 amplitude are expressed in terms of the parameter R:…”

Section: Qed Corrections To the E1 Amplitudes In Csmentioning

confidence: 99%

Basis Set Calculations of Heavy Atoms

Kozlov,

Demidov,

Kaygorodov

et al. 2024

Atoms

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Most modern calculations of many-electron atoms use basis sets of atomic orbitals. An accurate account for electronic correlations in heavy atoms is a very difficult computational problem, and an optimization of the basis sets can reduce computational costs and increase final accuracy. Here, we propose a simple differential ansatz to form virtual orbitals from the Dirac–Fock orbitals of the core and valence electrons. We use basis sets with such orbitals to calculate different properties in Cs including hyperfine structure constants and QED corrections to the valence energies and to the E1 transition amplitudes.

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Section: Qed Corrections To the E1 Amplitudes In Csmentioning

confidence: 99%