The radiative electron capture into (initially) lithium-like ions is studied within the framework of the density matrix approach. Special attention is paid to the magnetic sublevel population of the residual ionic states which is described by a set of alignment parameters. Detailed calculations of these parameters have been performed for the capture into the 1s2 2s 3d3/2 Jf2 level of high-Z ions along the beryllium isoelectronic sequence. We devote special attention to the modifications in the many-electron case as opposed to singleelectron systems. The electron correlation leads to an enhancement of the alignment, which becomes more pronounced as the nuclear charge decreases and the electron-electron interaction gains in strength as compared to the electron-nucleus interaction.
A. S. Surzhykov et al., "Effects of Configuration Interaction on the Alignment of Beryllium-Like Ions," Journal of Physics: Conference Series, vol. 58, no. 1, pp. 211-214, IOP Publishing, Mar 2007.
The definitive version is available at https://doi.org/10.1088/1742-6596/58/1/044
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