Absolute cross sections for photoionization of Xeq+ ions (1 ≤ q ≤ 5) at the 3d 
ionization threshold

Schippers, S.; Ricz, S.; Buhr, T.; Borovik Jr, A.; Hellhund, J.; Holste, K.; Huber, K.; Schäfer, H.-J.; Schury, D.; Klumpp, S.; Mertens, K.; Martins, M.; Flesch, R.; Ulrich, G.; Rühl, E.; Jahnke, T.; Lower, J.; Metz, D.; Schmidt, L. P. H.; Schöffler, M.; Williams, J. B.; Glaser, L.; Scholz, F.; Seltmann, J.; Viefhaus, J.; Dorn, A.; Wolf, A.; Ullrich, J.; Müller, A.

doi:10.1088/0953-4075/47/11/115602

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Absolute cross sections for photoionization of Xe^q+ ions (1 ≤ q ≤ 5) at the 3d ionization threshold

MPS-Authors

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Dorn, A.
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Wolf, A.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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http://iopscience.iop.org/0953-4075/47/11/115602/article
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Citation

Schippers, S., Ricz, S., Buhr, T., Borovik Jr, A., Hellhund, J., Holste, K., et al. (2014). Absolute cross sections for photoionization of Xe^q+ ions (1 ≤ q ≤ 5) at the 3d ionization threshold. Journal of Physics B, 47(11): 115602. doi:10.1088/0953-4075/47/11/115602.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-58EF-1

Abstract

The photon-ion merged-beams technique has been employed at the new Photon-Ion spectrometer at PETRA III for measuring multiple photoionization of Xeq + (q = 1–5) ions. Total ionization cross sections have been obtained on an absolute scale for the dominant ionization reactions of the type hν + Xe^q+ → Xer + + (q − r)e⁻ with product charge states q + 2 ≤ r ≤ q + 5. Prominent ionization features are observed in the photon-energy range 650–750 eV, which are associated with excitation or ionization of an inner-shell 3d electron. Single-configuration Dirac–Fock calculations agree quantitatively with the experimental cross sections for non-resonant photoabsorption, but fail to reproduce all details of the measured ionization resonance structures.