Electron-ion recombination of the open-4f-shell ion W19+

N. R. Badnell, K. Spruck, C. Krantz, O. Novotný, A. Becker, D. Bernhardt, M. Grieser, M. Hahn, R. Repnow, D. W. Savin, A. Wolf, A. Müller, S. Schippers

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Electron-ion recombination of W19+ forming W18+ has been studied both experimentally and theoretically. An exceptionally large recombination rate coefficient was observed by the storage-ring experiment at zero electron-ion collision energy. It exceeds the expectation for nonresonant radiative recombination (RR) by more than two orders of magnitude. This follows the pattern seen previously for the neighboring charge states of tungsten. The results of our present theoretical calculations, which were carried-out within the Breit-Wigner partitioned framework for resonant electron-ion recombination of complex ions, agree with this observation.

Original languageEnglish
Article number052003
Number of pages1
JournalJournal of Physics: Conference Series
Issue number5
Early online date7 Sept 2015
Publication statusE-pub ahead of print - 7 Sept 2015
EventXXIX International Conference on Photonic, Electronic, and Atomic Collisions (ICPEAC) - Toledo, Spain
Duration: 22 Jul 201528 Jul 2015


  • atoms
  • electrons
  • charge state
  • complex ions
  • electron-ion collision
  • electron-ion-recombinations
  • orders of magnitude
  • radiative recombination
  • recombination rate
  • theoretical calculations


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