Accurate spectral approach for the calculation of doubly excited 1P states of Li+
| Autor: | Stéphane Laulan, Marc-André Albert, Samira Barmaki |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Radiation Electronic correlation 010308 nuclear & particles physics Function (mathematics) 7. Clean energy 01 natural sciences Schrödinger equation Ion symbols.namesake Excited state 0103 physical sciences symbols Singlet state Atomic physics 010306 general physics Spectral method Wave function |
| Zdroj: | Radiation Physics and Chemistry. 151:65-68 |
| ISSN: | 0969-806X |
| DOI: | 10.1016/j.radphyschem.2018.05.021 |
| Popis: | We report in this paper computed resonant parameters for the lowest singlet doubly excited 1Po states of the Li+ ion lying below the N = 2 and N = 3 hydrogenic thresholds. In our previous works (see Barmaki et al., 2014 and references therein), the calculation of the energy spectrum of a two-electron system was performed with a spectral method of configuration-interaction type that consists in expanding the radial part of the two-electron wave function on antisymmetrized products of B-spline functions. We combine in this paper the expansion of the wave function on B-spline functions with the complex rotation method in order to have access to the spectral data of the 1Po resonances embedded between the Li 2 + ( N l ) thresholds. The present approach has the advantage to generate the energy positions and the widths of the resonances in a single calculation. The obtained results are in very good agreement with other available experimental and theoretical data. |
| Databáze: | OpenAIRE |
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