1. Absolute cross sections for photoionization of Xeq + ions (1 ⩽ q ⩽ 5) at the 3d ionization threshold.
- Author
-
Schippers, S, Ricz, S, Buhr, T, Jr, A Borovik, 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, and Schöffler, M
- Subjects
PHOTOIONIZATION ,IONIZATION (Atomic physics) ,SYNCHROTRON radiation ,INNER-shell ionization ,ELECTRON configuration ,DIRAC equation ,LIGHT absorption - Abstract
The photon-ion merged-beams technique has been employed at the new Photon-Ion spectrometer at PETRA III for measuring multiple photoionization of Xe
q + (q = 1–5) ions. Total ionization cross sections have been obtained on an absolute scale for the dominant ionization reactions of the type hν + Xeq + → 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. [ABSTRACT FROM AUTHOR]- Published
- 2014
- Full Text
- View/download PDF