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Dielectronic recombination of lithium-like Ar15+

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Zeitschrift für Physik D Atoms, Molecules and Clusters

Abstract

Dielectronic recombination (DR) of Ar15+(1s 22s) ions was studied in a single-pass merged-beams experiment at the UNILAC (universal linear accelerator) of GSI. Absolute recombination rates and cross sections were measured for electron-ion center-of-mass energies from 0 to 580 eV. A number of Rydberg states formed by DR with 2s → 2p (Δn=0) and 2s → 3ℓ (Δn=1) core excitations and even individual terms in the 1s 23ℓ3ℓ′ configuration could be resolved. Theoretical calculations of DR cross sections are in good overall agreement with the data. In the calculations for Δn=0 transitions, effects of electric fields have to be included to reproduce the magnitude of the measured DR rates at the limit of the 2 p 1/2ℓ and 2 p 3/2ℓ Rydberg series. Discrepancies between theory and experiment are observed at the series limits of the (1s 23ℓnℓ′) Rydberg series.

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Author notes

  1. S. Schennach, A. Müller, O. Uwira, J. Haselbauer, W. Spies, A. Frank & M. Wagner

    Present address: Institut für Kernphysik, Justus-Liebig-Universität, Giessen, Germany

  2. E. Jennewein

    Present address: Institut für Angewandte Physik, J.-W.-Goethe-Universität, Frankfurt, Germany

  3. N. R. Badnell

    Present address: Department of Physics, Auburn University, 36849, Auburn, AL, USA

Authors and Affiliations

  1. Institut für Strahlenphysik, Universität Stuttgart, D-70569, Stuttgart, Germany

    A. Müller, O. Uwira, W. Spies & A. Frank

  2. Institut für Angewandte Physik, Universität Frankfurt, D-60054, Frankfurt, Germany

    R. Becker & M. Kleinod

  3. Gesellschaft für Schwerionenforschung (GSI), D-64291, Darmstadt, Germany

    S. Schennach, N. Angert & P. H. Mokler

  4. Department of Physics & Applied Physics, University of Strathclyde, G4 0NG, Glasgow, UK

    N. R. Badnell

  5. Department of Physics, Auburn University, 36849, Auburn, AL, USA

    M. S. Pindzola

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  1. S. Schennach
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  2. A. Müller
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  3. O. Uwira
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  4. J. Haselbauer
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  6. A. Frank
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  7. M. Wagner
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  8. R. Becker
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  9. M. Kleinod
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  10. E. Jennewein
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Schennach, S., Müller, A., Uwira, O. et al. Dielectronic recombination of lithium-like Ar15+ . Z Phys D - Atoms, Molecules and Clusters 30, 291–306 (1994). https://doi.org/10.1007/BF01426394

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  • DOI: https://doi.org/10.1007/BF01426394

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