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Marcel Mudrich

Vibrational relaxation and dephasing of Rb2 attached to helium nanodroplets

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DOI

  • Barbara Grüner, Albert-Ludwigs-Universität Freiburg
  • ,
  • Maximilian Schlesinger, Technische Universitat Dresden
  • ,
  • Ph Heister, Albert-Ludwigs-Universität Freiburg, Technische Universitat Munchen
  • ,
  • W. T. Strunz, Technische Universitat Dresden
  • ,
  • F. Stienkemeier, Albert-Ludwigs-Universität Freiburg
  • ,
  • M. Mudrich

The vibrational wave-packet dynamics of diatomic rubidium molecules (Rb2) in triplet states formed on the surface of superfluid helium nanodroplets is investigated both experimentally and theoretically. Detailed comparison of experimental femtosecond pump-probe spectra with dissipative quantum dynamics simulations reveals that vibrational relaxation is the main source of dephasing. The rate constant for vibrational relaxation in the first excited triplet state 13Σ+g is found to be constant γ ≈ 0.5 ns-1 for the lowest vibrational levels v ≲ 15 and to increase sharply when exciting to higher energies.

OriginalsprogEngelsk
TidsskriftPhysical Chemistry Chemical Physics
Vol/bind13
Nummer15
Sider (fra-til)6816-6826
Antal sider11
ISSN1463-9076
DOI
StatusUdgivet - 21 apr. 2011
Eksternt udgivetJa

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