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Phys. Rev. A 80, 012516 (2009) [10 pages]

Development of a configuration-interaction plus all-order method for atomic calculations

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M. S. Safronova*
Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716-2570, USA

M. G. Kozlov
Petersburg Nuclear Physics Institute, Gatchina 188300, Russia

W. R. Johnson
Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, Indiana 46556, USA

Dansha Jiang
Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA

Received 15 May 2009; published 29 July 2009

We develop a theoretical method within the framework of relativistic many-body theory to accurately treat correlation corrections in atoms with few valence electrons. This method combines the all-order approach currently used in precision calculations of properties of monovalent atoms with the configuration-interaction approach that is applicable for many-electron systems. The method is applied to Mg, Ca, Sr, Zn, Cd, Ba, and Hg to evaluate ionization energies and low-lying energy levels.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.80.012516
DOI:
10.1103/PhysRevA.80.012516
PACS:
31.15.ac

*msafrono@udel.edu; http://www.udel.edu/~msafrono

 
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