Multiconfiguration calculations of electronic isotope shift factors in Al I

Abstract

The present work reports results from systematic multiconfiguration Dirac-Hartree-Fock calculations of electronic isotope shift factors for a set of transitions between low-lying states in neutral aluminium. These electronic quantities together with observed isotope shifts between different pairs of isotopes provide the changes in mean-square charge radii of the atomic nuclei. Two computational approaches are adopted for the estimation of the mass- and field shift factors. Within these approaches, different models for electron correlation are explored in a systematic way to determine a reliable computational strategy and estimate theoretical error bars of the isotope shift factors.

arXiv comment10 pages, 1 figure, accepted for publication in Phys. Rev. A. arXiv admin note: substantial text overlap with arXiv:1604.07594

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