Heidelberg 2015 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 2: Atomic clusters (with MO)

A 2.3: Vortrag

Montag, 23. März 2015, 12:15–12:30, M/HS1

Investigation of resonant interatomic coulombic decay in neon clusters by dispersed fluorescence spectroscopy — •Ltaief Ben Ltaief1, Andreas Hans1, Philipp Schmidt1, Philipp Reiss1, Marko Förstel2, Uwe Hergenhahn2, Till Jahnke3, Reinhard Dörner3, André Knie1, and Arno Ehresmann11Universität Kassel, Heinrich-Plett Straß 40, D-34132 Kassel, Germany — 2Max- Planck- Institut für Plasmaphysik, EURATOM Association, Wendelsteinstr. 1, 17491 Greifswald, Germany — 3Institut für Kernphysik Goethe- Universität Max-von-Laue-Str.1 60438 Frankfurt am Main, Germany

Interatomic Coulombic Decay (ICD) in weakly bound systems, e.g. van-der-Waals clusters or hydrogen bonded clusters, has recently attracted much interest as an efficient and ultrafast process by which the excess energy of electronically excited atoms or molecules is transferred to a neighboring site, thereby, ionizing it. Since its discovery ICD is considered to be a relevant process in radiation chemistry and living tissues by producing low kinetic energy electrons and radical cations which may induce irreparable damage to DNA. So far, most of experiments aiming at ICD-processes used charged particles as probe of the process. Recently we have successfully demonstrated a first unambiguous proof of ICD by undispersed measurements of the emitted photons from neon clusters [1]. Here we report the use of dispersed-fluorescence spectrometry to investigate ICD after resonant excitation in neon clusters.

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

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