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Marcel Mudrich

Photoionization and imaging spectroscopy of rubidium atoms attached to helium nanodroplets

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  • L. Fechner, Albert-Ludwigs-Universität Freiburg
  • ,
  • Barbara Grüner, Albert-Ludwigs-Universität Freiburg
  • ,
  • A. Sieg, Albert-Ludwigs-Universität Freiburg
  • ,
  • C. Callegari, Elettra-Sincrotrone Trieste S.C.p.A.
  • ,
  • F. Ancilotto, Università degli Studi di Padova, IOM-Democritos National Simulation Center
  • ,
  • F. Stienkemeier, Albert-Ludwigs-Universität Freiburg
  • ,
  • M. Mudrich

Highly excited states of rubidium (Rb) atoms attached to helium (He) nanodroplets are studied by two-photon ionization spectroscopy in combination with electron and ion imaging. We find high yields of RbHe and RbHe 2 exciplexes when exciting to the 4D and 6P bands but not at the 6S band, in accord with a direct formation of exciplexes in binding RbHe pair potentials. Photoion spectra and angular distributions are in good agreement with a pseudodiatomic model for the RbHe N complex. Repulsive interactions in the excited states entail fast dissociation followed by ionization of free Rb atoms as well as of RbHe and RbHe 2 exciplexes.

TidsskriftPhysical Chemistry Chemical Physics
Sider (fra-til)3843-3851
Antal sider9
StatusUdgivet - 21 mar. 2012
Eksternt udgivetJa

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