Hannover 2013 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 7: Interaction with VUV and X-ray light I
A 7.8: Vortrag
Montag, 18. März 2013, 15:45–16:00, B 302
Investigation of resonant X-ray absorption structures of different terpenes by total ion yield measurements in the vicinity of C1s-edge — •Benjamin Kambs1, Kari Jänkälä2,3, Philipp Schmidt1, Andreas Hans1, Christian Ozga1, Philipp Reiß1, André Knie1, and Arno Ehresmann1 — 1Institut für Physik und Center for Interdisciplinary Nanostructure Science and Technology, Universität Kassel, D-34132 Kassel, Germany — 2Department of Physics, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland — 3Institute for Experimental Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
Structures differing from their own mirror images are called chiral. In a variety of biochemical reactions there is a crucial difference in the behaviour of both types of one chiral molecule. For an understanding of those processes, it is of essential importance to know the electronic architecture of such molecules and how it is influenced by the chiral molecular potential.
A small prototypical class of chiral substances often found in nature are terpenes. In the present experiment we investigated Limonene, α-Pinene, Carvone and Fenchone at the beamline UE56/2 at Bessy, Berlin. Those molecules have been excited by monochromatized synchrotron radiation in the regime of the C1s edge. We measured the total ion yield spectra during their subsequent decay and relaxation. The results yield information about the absorption of X-rays and are compared to spectra calculated by means of the time dependent density functional theory method.