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Ionic bonding in free nanoscale NaCl clusters as seen by photoelectron spectroscopy

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Author

Summary, in English

The free neutral nanoscale NaCl clusters have been produced in a beam and studied with x-ray photoelectron spectroscopy. High resolution spectra simultaneously containing cluster and molecular-monomer, featuring in both the valence and core-level Na 2p and Cl 2p regions, have been obtained. Cluster-level energy shifts of around 3 eV toward lower binding energy for Na 2p and approximate to 1 eV toward higher binding energy for Cl 2p relative to the monomer levels have been unambiguously established. To rationalize the core-level energy shifts of the nanoscale NaCl clusters, the ionic model taking into account all charge-charge and polarization interactions has been developed and implemented. A satisfactory agreement between the experimental and model results has been obtained. The model calculations have also shed additional light on the size-and site-specific cluster responses. (C) 2011 American Institute of Physics. [doi:10.1063/1.3570576]

Department/s

Publishing year

2011

Language

English

Publication/Series

Journal of Chemical Physics

Volume

134

Issue

12

Document type

Journal article

Publisher

American Institute of Physics (AIP)

Topic

  • Physical Sciences
  • Natural Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 0021-9606