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Major role of multielectronic K-L intershell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons30291

Beilmann,  C.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30565

Harman,  Z.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30816

Mokler,  P. H.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30299

Bernitt,  S.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30659

Keitel,  C. H.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons31125

Ullrich,  J.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30383

Crespo López-Urrutia,  J. R.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Citation

Beilmann, C., Harman, Z., Mokler, P. H., Bernitt, S., Keitel, C. H., Ullrich, J., et al. (2013). Major role of multielectronic K-L intershell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr. Physical Review A, 88(6): 062706, pp. 1-11. doi:10.1103/PhysRevA.88.062706.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0014-C5CC-2
Abstract
Dielectronic and higher-order resonant electron recombination processes including a K-shell excitation were systematically measured at high electron energy resolution in electron beam ion traps. After storing highly charged Ar, Fe, and Kr ions, the dependence on atomic number Z of the contribution of these processes to the total recombination cross section was studied and compared with theoretical calculations. Large higher-order resonant recombination contributions were found, especially for systems with 10<Z<36. In some cases, they even surpass the strength of the dielectronic channel, which was hitherto presumed to be always the dominant one. These findings have consequences for modeling high-temperature plasmas. Features attributed to intershell quadruelectronic recombination were also observed. The experimental data obtained for the He-like to O-like isoelectronic sequences compare well with the results of advanced relativistic distorted-wave calculations employing multiconfiguration Dirac-Fock bound-state wave functions that include threefold and fourfold excitations.