Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 31: Poster Session III

A 31.39: Poster

Donnerstag, 9. März 2017, 17:00–19:00, P OG1

Ultra-fast interatomic processes investigated by electron impact induced fluorescence spectroscopy — •Catmarna Küstner-Wetekam, Andreas Hans, Philipp Schmidt, Christian Ozga, Xaver Holzapfel, Arno Ehresmann, and André Knie — Institut für Physik and CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany

In weakly bound systems like clusters novel relaxation pathways emerge for electronically excited states via different interparticle reactions such as Interatomic Coulombic Decay (ICD [1]) and Radiative Charge Transfer (RCT [2]). Both are of general interest due to their possible role in radiation damage in biological systems [1,2]. Here, we introduce an experiment using electron impact induced fluorescence spectroscopy (EIFS [3]) for ionization of noble gas clusters and examination of ICD and RCT fluorescence lines [4,5]. The excitation energy can be varied between 5 eV and 3 keV to observe different relaxation mechanisms in clusters by detection of emitted photons in a wavelength range from 40 nm to 650 nm.

[1] F. Trinter et al., Nature, 505, 664 (2014)

[2] X. Ren et al., Nat. Commun., 7, 11093 (2016)

[3] A. Knie et al., J. Elec. Spec., 185, 492-497 (2012)

[4] A. Knie et al., New J. Phys., 16, 102002 (2014)

[5] A. Hans et al., Chem. Phys., In Press (2016)