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Charge Dependence of Solvent-Mediated Intermolecular Coster-Kronig Decay Dynamics of Aqueous Ions.

  • Gunnar Öhrwall
  • N Ottosson
  • W Pokapanich
  • S Legendre
  • S Svensson
  • O Björneholm
Publiceringsår: 2010
Språk: Engelska
Sidor: 17057-17061
Publikation/Tidskrift/Serie: The Journal of Physical Chemistry Part B
Volym: 114
Nummer: 51
Dokumenttyp: Artikel i tidskrift
Förlag: The American Chemical Society


The 2s and 2p photoelectron spectra have been measured for Na(+), Mg(2+), and Al(3+) ions in aqueous solution. In all cases, the 2s lines are significantly broader than the 2p features, which is attributed to a shorter lifetime of the respective 2s hole. Since intraionic Coster-Kronig decay channels from the (2s)(-1) state are closed for free Na(+), Mg(2+), and Al(3+) ions, this is evidence for an intermolecular Coster-Kronig-like process, reminiscent of intermolecular Coulombic decay (ICD), involving neighboring water solvent molecules. The observed 2s Lorentzian line widths correspond to lifetimes of the (2s)(-1) state of 3.1, 1.5, and 0.98 fs for the solvated Na, Mg, and Al ions, respectively.


  • Physical Sciences
  • Natural Sciences


  • ISSN: 1520-5207

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