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Experimental Evidence for Interatomic Coulombic Decay in Ne Clusters

MPS-Authors

Marburger,  S.
Max Planck Society;

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Kugeler,  O.
Electron Spectroscopy Group (ELSPEC), Max Planck Institute for Plasma Physics, Max Planck Society;

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Hergenhahn,  U.
Electron Spectroscopy Group (ELSPEC), Max Planck Institute for Plasma Physics, Max Planck Society;

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Citation

Marburger, S., Kugeler, O., Hergenhahn, U., & Möller, T. (2003). Experimental Evidence for Interatomic Coulombic Decay in Ne Clusters. Physical Review Letters, 90(1-2): 203401. doi:10.1103/PhysRevLett.90.203401.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-3F34-1
Abstract
Electron spectra of photoexcited Ne clusters are shown to display a signal at low kinetic energies that is neither present in the Ne monomer nor at photon energies below the inner-valence 2s threshold. These findings are strong evidence for the existence of interatomic Coulombic decays (ICD), a mechanism that was recently predicted theoretically [Phys. Rev. Lett. 79, 4778 (1997)]. In ICD, an inner-valence hole state in a weakly bonded system can undergo ultrafast relaxation due to energy transfer to a neighboring atom, followed by electron emission from this neighboring site.