Vibrational relaxation and dephasing of Rb2 attached to helium nanodroplets.

  title={Vibrational relaxation and dephasing of Rb2 attached to helium nanodroplets.},
  author={Barbara Gr{\"u}ner and Martin Schlesinger and Philipp Heister and Walter T. Strunz and Frank Stienkemeier and Marcel Mudrich},
  journal={Physical chemistry chemical physics : PCCP},
  volume={13 15},
The vibrational wave-packet dynamics of diatomic rubidium molecules (Rb(2)) 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 1(3)Σ(g)+ is found to be… 
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