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Marcel Mudrich

Dynamics of solvation and desolvation of rubidium attached to He nanodroplets

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  • Johannes Von Vangerow, Albert-Ludwigs-Universität Freiburg
  • ,
  • O'Toole, John og Dunn, Julie, Albert-Ludwigs-Universität Freiburg
  • ,
  • F. Stienkemeier, Albert-Ludwigs-Universität Freiburg
  • ,
  • M. Mudrich

The real-time dynamics of photoexcited and photoionized rubidium (Rb) atoms attached to helium (He) nanodroplets is studied by femtosecond pump-probe mass spectrometry. While excited Rb atoms in the perturbed 6p-state (Rb) desorb off the He droplets, Rb+ photoions tend to sink into the droplet interior when created near the droplet surface. The transition from Rb+ solvation to full Rb desorption is found to occur at a delay time τ ∼ 600 fs for Rb in the 6pΣ-state and τ ∼ 1200 fs for the 6pΠ-state. Rb+He ions are found to be created by directly exciting bound RbHe exciplex states as well as by populating bound Rb+He-states in a photoassociative ionization process.

TidsskriftJournal of Chemical Physics
StatusUdgivet - 21 jul. 2015
Eksternt udgivetJa

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