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Direct observation of interatomic Coulombic decay and subsequent ion-atom scattering in helium nanodroplets

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Trinter,  Florian
Institut für Kernphysik, Goethe Universität;
Deutsches Elektronen-Synchrotron (DESY), FS-PETRA-S;
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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PhysRevA.100.022707.pdf
(Publisher version), 2MB

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Citation

Wiegandt, F., Trinter, F., Henrichs, K., Metz, D., Pitzer, M., Waitz, M., et al. (2019). Direct observation of interatomic Coulombic decay and subsequent ion-atom scattering in helium nanodroplets. Physical Review A, 100(2): 022707. doi:10.1103/PhysRevA.100.022707.


Cite as: http://hdl.handle.net/21.11116/0000-0004-8B3A-F
Abstract
We report on the experimental observation of interatomic Coulombic decay (ICD) in pure 4He nanoclusters of mean sizes between N ∼ 5000 and 30 000 and the subsequent scattering of energetic He+ fragments inside the neutral cluster by using cold target recoil ion momentum spectroscopy. ICD is induced in He clusters by using vacuum ultraviolet light of hν=67eV from the BESSY II synchrotron. The electronic decay creates two neighboring ions in the cluster at a well-defined distance. The measured fragment energies and angular correlations show that a main energy loss mechanism of these ions inside the cluster is a single hard binary collision with one atom of the cluster.