Berlin 2014 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 51: Interaction with VUV and X-ray light III
A 51.6: Vortrag
Freitag, 21. März 2014, 11:45–12:00, BEBEL E42
Angular Distribution of Fluorescence Transitions in XeII obtained by Photon-Induced Fluorescence Spectroscopy after Excitation with Synchrotron Radiation — •Philipp Reiß1, Christian Ozga1, Witoslaw Kielich1, Stefan Klumpp2, André Knie1, and Arno Ehresmann1 — 1Institut für Physik and Center for Interdisciplinary Nanostructure Science and Technology, Universität Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany — 2Institute for Experimental Physics, University of Hamburg Faculty of Mathematics, Informatics and Natural Sciences Department of Physics, Luruper Chaussee 149, D22761 Hamburg, Germany
Xenon with its high number of electrons and their manifold interactions is a commonly used sample for the study of quantum-mechanical electron-correlative effects.
In this experiment, Photon-Induced Fluorescence Spectroscopy has been used to determine fluorescence excitation cross-sections and the angular distribution of the fluorescence from selected transitions after excitation of the XeI ground state to the doubly excited state [Kr] 5s2 5p4 (3P2) nl n∗l∗ with narrow-band synchrotron radiation and its subsequent autoionization into XeII 5p46p satellite states.
The fluorescence angular distribution shows an exciting-photon energy dependent variation. Thereby, the calculation of alignment and orientation parameters for certain electronic states in XeII and an electron partial wave analysis is feasible [Schill et. al., J. Phys. B. 36, L57 (2003)].