Relativistic configuration interaction plus linearized-coupled-cluster calculations of U2+ energies, g factors, transition rates, and lifetimes
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Authors
Savukov, I.
Safronova, U. I.
Safronova, M. S.
Issue Date
2015
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Article
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Abstract
Excitation energies, term designations, g factors, transition rates, and lifetimes of U2+ are determined using a relativistic configuration interaction (CI) + linearized-coupled-cluster (LCC) approach. The CI-LCC energies are compared with CI + many-body-perturbation-theory (MBPT) and available experimental energies. Close agreement has been found with experiment, within hundreds of cm(-1). In addition, lifetimes of higher levels have been calculated for comparison with three experimentally measured lifetimes, and close agreement has been found within the experimental error. CI-LCC calculations constitute a benchmark test of the CI + all-order method in complex relativistic systems such as actinides and their ions with many valence electrons. The theory yields many energy levels, g factors, transition rates, and lifetimes of U2+ that are not available from experiment. The theory can be applied to other multivalence atoms and ions, which would be of interest to many applications.
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Savukov, I., Safronova, U. I., & Safronova, M. S. (2015). Relativistic configuration interaction plus linearized-coupled-cluster calculations ofU2+energies,gfactors, transition rates, and lifetimes. Physical Review A, 92(5). doi:10.1103/physreva.92.052516
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In Copyright (All Rights Reserved)
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1050-2947