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- W2548598957 abstract "A version of the configuration interaction (CI) method is developed which treats highly excited many-electron basis states perturbatively, so that their inclusion does not affect the size of the CI matrix. This removes, at least in principle, the main limitation of the CI method in dealing with many-electron atoms or ions. We perform calculations of the spectra of iodine and its ions, tungsten, and ytterbium as examples of atoms with open $s, p, d$, and $f$ shells. Good agreement of the calculated data with experiment illustrates the power of the method. Its advantages and limitations are discussed." @default.
- W2548598957 created "2016-11-11" @default.
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- W2548598957 date "2017-01-18" @default.
- W2548598957 modified "2023-10-03" @default.
- W2548598957 title "Combining configuration interaction with perturbation theory for atoms with a large number of valence electrons" @default.
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- W2548598957 doi "https://doi.org/10.1103/physreva.95.012503" @default.
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