New Journal of Physics (Jan 2014)

Detecting ultrafast interatomic electronic processes in media by fluorescence

  • André Knie,
  • Andreas Hans,
  • Marko Förstel,
  • Uwe Hergenhahn,
  • Philipp Schmidt,
  • Philipp Reiß,
  • Christian Ozga,
  • Benjamin Kambs,
  • Florian Trinter,
  • Jörg Voigtsberger,
  • Daniel Metz,
  • Till Jahnke,
  • Reinhard Dörner,
  • Alexander I Kuleff,
  • Lorenz S Cederbaum,
  • Philipp V Demekhin,
  • Arno Ehresmann

DOI
https://doi.org/10.1088/1367-2630/16/10/102002
Journal volume & issue
Vol. 16, no. 10
p. 102002

Abstract

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Interatomic coulombic decay (ICD), a radiationless transition in weakly bonded systems, such as solutes or van der Waals bound aggregates, is an effective source for electrons of low kinetic energy. So far, the ICD processes could only be probed in ultra-high vacuum by using electron and/or ion spectroscopy. Here we show that resonant ICD processes can also be detected by measuring the subsequently emitted characteristic fluorescence radiation, which makes their study in dense media possible.

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