| Zugriffsnummer | 25932 |
| Dokumenttyp | Bericht |
| Sprache | Englisch |
| Titel | Channel interaction in valence photoionization of krypton atoms |
| Autor(in); Institution |
Buhr, Ticia; 6.6, Grundlagen der Dosimetrie, PTB-Braunschweig
Ricz, Sándor; Institute of Nuclear Research of the Hungarian Academy of Science, Debrecen, HUNGARY; Justus-Liebig-Universität, Institut für Atom- und Molekülphysik, Giessen, GERMANY
Kövér, Ákos; Institute of Nuclear Research of the Hungarian Academy of Science, Debrecen, HUNGARY
Holste, Kristof; Justus-Liebig-Universität, Institut für Atom- und Molekülphysik, Giessen, GERMANY
Borovik, A. A.; Justus-Liebig-Universität, Institut für Atom- und Molekülphysik, Giessen, GERMANY
Bernhardt, Dietrich; Justus-Liebig-Universität, Institut für Atom- und Molekülphysik, Giessen, GERMANY
Schippers, Stefan; Justus-Liebig-Universität, Institut für Atom- und Molekülphysik, Giessen, GERMANY
Varga, Dezsö; Institute of Nuclear Research of the Hungarian Academy of Science, Debrecen, HUNGARY
Müller, Alfred; Justus-Liebig-Universität, Institut für Atom- und Molekülphysik, Giessen, GERMANY
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| Quelle/Jahr | Photon science : Highlights and HASYLAB annual report 2010:(2011), 756 - 757 |
| URL | |
| Verlag | Hamburg: HASYLAB |
| Freie Schlagworte | photoionization of free atoms ; electron spectroscopy ; synchrotron radiation |
| Zusammenfassung | The angular distribution of Kr 4p photoelectrons was measured employing a linearly polarized photon beam at energies from 205 eV to 230 eV. In this range the Kr 3p→ns/md (n,m=4,5,6,...) resonances can be excited. The experimental dipole (β) and non-dipole (γ and δ) anisotropy parameters were determined for the Kr 4p shell and its fine structure components. The measurement was carried out at beamline BW3 of the DORIS III synchrotron light source at HASYLAB (Hamburg, Germany). The ESA-22D electrostatic electron spectrometer was used to analyze the emitted electrons. The photon energy dependence of the dipole anisotropy parameters indicates the importance of the channel interactions and relativistic effects in krypton photoionization. Furthermore, an interference effect between the ionization and excitation channels was observed We can conclude that the angular distribution of photoelectrons is strongly influenced by the excitation processes. |
