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- W2012887666 abstract "A computational method is described for obtaining inner-shell-vacancy states of three-electron atoms which combines a block-diagonalization procedure with generalized Feshbach projection operators applicable to systems with three or more electrons. Typically, the accuracy is about 1.5 parts per thousand (ensuremath{delta}E/Eensuremath{approxeq}1.5ifmmodetimeselsetexttimesfi{}${10}^{mathrm{ensuremath{-}}3}$). The strength of the method is that it provides many energy levels for each Rydberg series. A quantum-defect analysis is then applied that identifies the members of each series and yields reliable quantum defects and series limits. The method is particularly important in symmetries for which multiple Rydberg series exist. The present work reports on $^{4}$${mathit{P}}^{mathit{e}}$ states of three-electron systems with 3ensuremath{le}Zensuremath{le}10, which are compared with other calculations. The energies of $^{2}$${mathit{S}}^{mathit{e}}$ states of ${mathrm{C}}^{3+}$ are also presented as an example requiring both the multielectron Feshbach projection operators and the quantum-defect analysis developed here. Four distinct Rydberg series are found for this case and their series limits obtained." @default.
- W2012887666 created "2016-06-24" @default.
- W2012887666 creator A5015993859 @default.
- W2012887666 creator A5039560946 @default.
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- W2012887666 date "1992-10-01" @default.
- W2012887666 modified "2023-10-01" @default.
- W2012887666 title "Three-electron systems with inner-shell vacancies" @default.
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- W2012887666 doi "https://doi.org/10.1103/physreva.46.4012" @default.
- W2012887666 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/9908597" @default.
- W2012887666 hasPublicationYear "1992" @default.
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