| Zugriffsnummer | 37083 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Stepwise contraction of the nf Rydberg shells in the 3d photoionization of multiply-charged xenon ions |
| Autor(in); Institution |
Schippers, Stefan; Justus-Liebig-Universität Giessen, I. Physikalisches Institut, Giessen, GERMANY; Justus-Liebig-Universität Giessen, Institut für Atom- und Molekülphysik, Giessen, GERMANY
Borovik, Alexander; Justus-Liebig-Universität Giessen, Institut für Atom- und Molekülphysik, Giessen, GERMANY; Justus-Liebig-Universität Giessen, I. Physikalisches Institut, Giessen, GERMANY
Buhr, Ticia; 6.5, Strahlenwirkung, PTB-Braunschweig
Hellhund, Jonas; Justus-Liebig-Universität Giessen, Institut für Atom- und Molekülphysik, Giessen, GERMANY
Holste, Kristof; Justus-Liebig-Universität Giessen, Institut für Atom- und Molekülphysik, Giessen, GERMANY; Justus-Liebig-Universität Giessen, I. Physikalisches Institut, Giessen, GERMANY
Kilcoyne, A. L. David; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California, USA
Klumpp, Stephan; Universität Hamburg, Institut für Experimentalphysik, Hamburg, GERMANY
Martins, Michael; Universität Hamburg, Institut für Experimentalphysik, Hamburg, GERMANY
Ricz, Sandor; Institute of Nuclear Research of the Hungarian Academy of Sciences, Debrecen, HUNGARY
Fritzsche, Stephan; Helmholtz-Institut Jena, Jena, GERMANY; Friedrich-Schiller-Universität Jena, Theoretisch-Physikalisches Institut, Jena, GERMANY
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| Quelle/Jahr | ECAMP 12, 12th European Conference on Atoms, Molecules and Photons: Extended abstracts:(2016), 9 |
| Availability | [Online only] |
| URL | |
| Konferenzangaben | 12th European Conference on Atoms, Molecules and Photons, Frankfurt am Main, 05-09, September, 2016, Germany |
| Freie Schlagworte | interactions of photons with charged particles ; photoionization ; synchrotron radiation |
| Zusammenfassung | Recently, first low-resolution results for 3d multiple photoionization of Xeq+ (1 ≤ q ≤ 5) from the photon-ion spectrometer PIPE at the Hamburg PETRA III synchrotron light source have been reported [1]. Here, new high-resolution measurements with an experimental energy spread of 160 meV are presented for3 ≤ q ≤ 5 [2]. Pronounced resonance structures are observed for all ions but with an increasing number of resonances as the charge state of the ions is increased. In contrast to the usually rather complex cross sections for outer shell ionization of atoms and ions, the present inner-shell ionization cross sections can be interpreted straight-forwardly. The strongest resonances are associated with the photoexcitation of a 3d electron to an atomic n f subshell (n = 4,5,6, ...) and the subsequent multiple autoionization of the associated hole states. The 3d3/2-13d5/2-1 fine structure splitting (≈ 13 eV) of the 3d hole leads to two distinct Rydberg series of resonances in each spectrum. For Xe3+, for example, resonances with principal quantum numbers n from 4 to 7 can be clearly discerned. For Xe5+ the series of n f resonances could be observed up to n = 9. This progression of resonance structure with increasing charge state clearly visualizes the re-ordering of the e f continuum into a regular series of (bound) Rydberg orbitals as the ionic core becomes more attractive. The energies and strengths of the resonances are extracted from the experimental data and are further analyzed by relativistic atomic-structure calculations. |
Zitierung
Schippers, S., Borovik, A., Buhr, T., Hellhund, J., Holste, K., Kilcoyne, A. L. D., Klumpp, S., Martins, M., Ricz, S., & Fritzsche, S. (2016). Stepwise contraction of the nf Rydberg shells in the 3d photoionization of multiply-charged xenon ions. 12th European Conference on Atoms, Molecules and Photons, Frankfurt am Main, 05-09, September, 2016, Germany.