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

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 U{sup 91+} and lithiumlike U{sup 89+} 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.

Authors:
; ; ;  [1];  [2];  [3]
  1. Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany)
  2. (GSI), D-64291 Darmstadt, Germany and Institut fuer Kernphysik, Universitaet Frankfurt, D-60486 Frankfurt (Germany)
  3. (Germany)
Publication Date:
OSTI Identifier:
20786922
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.73.032716; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; CATIONS; DECAY; DENSITY MATRIX; ELECTRON CAPTURE; ELECTRONS; EXCITED STATES; ION COLLISIONS; MULTIPOLES; URANIUM

Citation Formats

Surzhykov, Andrey, Jentschura, Ulrich D., Stoehlker, Thomas, Fritzsche, Stephan, Gesellschaft fuer Schwerionenforschung, and Institut fuer Physik, Universitaet Kassel, D-34132 Kassel. Radiative electron capture into high-Z few-electron ions: Alignment of the excited ionic states. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
Surzhykov, Andrey, Jentschura, Ulrich D., Stoehlker, Thomas, Fritzsche, Stephan, Gesellschaft fuer Schwerionenforschung, & Institut fuer Physik, Universitaet Kassel, D-34132 Kassel. Radiative electron capture into high-Z few-electron ions: Alignment of the excited ionic states. United States. doi:10.1103/PHYSREVA.73.0.
Surzhykov, Andrey, Jentschura, Ulrich D., Stoehlker, Thomas, Fritzsche, Stephan, Gesellschaft fuer Schwerionenforschung, and Institut fuer Physik, Universitaet Kassel, D-34132 Kassel. Wed . "Radiative electron capture into high-Z few-electron ions: Alignment of the excited ionic states". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20786922,
title = {Radiative electron capture into high-Z few-electron ions: Alignment of the excited ionic states},
author = {Surzhykov, Andrey and Jentschura, Ulrich D. and Stoehlker, Thomas and Fritzsche, Stephan and Gesellschaft fuer Schwerionenforschung and Institut fuer Physik, Universitaet Kassel, D-34132 Kassel},
abstractNote = {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 U{sup 91+} and lithiumlike U{sup 89+} 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.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
number = 3,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}