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Erlangen 2018 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 25: Poster Session I

A 25.50: Poster

Dienstag, 6. März 2018, 16:15–18:15, Redoutensaal

A molecular movie of Interatomic Coulombic Decay in NeKr — •Florian Trinter1, Tsveta Miteva2, Miriam Weller1, Sebastian Albrecht1, Alexander Hartung1, Martin Richter1, Joshua Williams1, Averell Gatton3, Bishwanath Gaire3, Thorsten Weber3, James Sartor4, Allen Landers4, Ben Berry5, Vasili Stumpf2, Kirill Gokhberg2, Reinhard Dörner1, and Till Jahnke11Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt am Main, Germany — 2Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, 69120 Heidelberg, Germany — 3Lawrence Berkeley National Laboratory, Chemical Sciences Division, Berkeley, California 94720, USA — 4Department of Physics, Auburn University, Auburn, Alabama 36849, USA — 5J. R. MacDonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA

During the last 15 years a novel decay mechanims of excited atoms has been discovered and investigated. This so called "Interatomic Coulombic Decay" (ICD) involves the chemical environment of the electronically excited atom or molecule: the excitation energy is transferred to a neighbor of the initially excited particle usually ionizing that neighbor. It turned out that ICD is a very common decay route in nature as it occurs across van der Waals and hydrogen bonds. The time evolution of ICD is predicted to be highly complex, as its efficiency strongly depends on the distance of the atoms involved and this distance typically changes during the decay. Here we present a direct measurement of the temporal evolution of ICD using a novel experimental approach.

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