Radiative electron capture into high- Z few-electron ions: Alignment of the excited ionic states

Andrey Surzhykov, Ulrich D. Jentschura, Thomas Stöhlker, Stephan Fritzsche

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

We lay out a unified formalism for the description of radiative electron capture into excited states of heavy, few-electron ions and their subsequent decay, including a full account of many-electron effects and higher-order multipoles of the radiation field. In particular, the density-matrix theory is applied to explore the magnetic sublevel population of the residual ions, as described in terms of alignment parameters. For the electron capture into the initially hydrogenlike U91+ and lithiumlike U89+ uranium projectiles, the alignment parameters are calculated, within the multiconfiguration Dirac-Fock approach, as a function of the collision energy and for different ionic states. From these calculations, we find that the many-electron interactions may result in a small enhancement of the alignment, and that this effect becomes more pronounced for highly excited levels.

Original languageEnglish
Article number032716
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume73
Issue number3
DOIs
Publication statusPublished - Mar 23 2006

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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