Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 11: Atomic clusters I (with MO)
A 11.7: Vortrag
Montag, 29. Februar 2016, 18:30–18:45, f107
Cluster size determination of clusters by fluorescence spectrometry — •Xaver Holzapfel1, Andreas Hans1, Philipp Schmidt1, Florian Wiegandt2, Ltaief Ben Ltaief1, Philipp Reiß1, Reinhard Dörner2, Arno Ehresmann1, and André Knie1 — 1University of Kassel, Institute of Physics and Center of Interdiscliplinary Nanostructure Science and Technology (CINSaT), D-34132 Kassel, Germany — 2Institute of Nuclear Physics, J. W. Goethe University, D-60438 Frankfurt, Germany
Clusters are finite aggregates and cover the gap between molecular and condensed matter physics and are thus used to study microscopic phenomena for many decades [1]. Rare gas clusters are created randomly by supersonic expansion and a scaling law is widely applied to express the mean cluster size of the distribution [2]. Different experiments report deviations between calculated and measured mean cluster size and further investigations are necessary for quantification [3]. Resonant excitation of outer valence electrons in rare gas clusters by synchrotron radiation yield characteristic informations in the resulting fluorescence yield about the mean cluster size. In the ongoing contribution we present a novel way of cluster size determination of clusters by photon induced fluorescence spectrometry (PIFS) [4].
[1] J. Jortner: Z. Phys. D 24, 247 (1992). [2] U. Buck et al.: J. Chem. Phys. 105, 5408 (1996). [3] H. Bergersen et al.: PCCP 8, 1891 (2006). [4] A. Knie et al.: New Journal of Physics 16, 102002 (2014).