Core correlation effects in multiconfiguration calculations of isotope shifts in Mg I

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Core correlation effects in multiconfiguration calculations of isotope shifts in Mg I

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Publication Article, peer reviewed scientific
Title Core correlation effects in multiconfiguration calculations of isotope shifts in Mg I
Author Filippin, Livio ; Godefroid, Michel ; Ekman, Jörgen ; Jönsson, Per
Date 2016
English abstract
The present work reports results from systematic multiconfiguration Dirac-Hartree-Fock calculations of isotope shifts for several well-known transitions in neutral magnesium. Relativistic normal and specific mass shift factors as well as the electronic probability density at the origin are calculated. Combining these electronic quantities with available nuclear data, energy and transition level shifts are determined for the Mg26−Mg24 pair of isotopes. Different models for electron correlation are adopted. It is shown that, although valence and core-valence models provide accurate values for the isotope shifts, the inclusion of core-core excitations in the computational strategy significantly improves the accuracy of the transition energies and normal mass shift factors.
DOI https://doi.org/10.1103/PhysRevA.93.062512 (link to publisher's fulltext.)
Publisher American Physical Society
Host/Issue Physical Review A;6
Volume 93
ISSN 2469-9934
Pages 062512
Language eng (iso)
Subject Sciences
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/21551 Permalink to this page
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