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Issue 15, 2011
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Vibrational relaxation and dephasing of Rb2 attached to helium nanodroplets

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Abstract

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.

Graphical abstract: Vibrational relaxation and dephasing of Rb2 attached to helium nanodroplets

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Article information


Submitted
02 Nov 2010
Accepted
15 Feb 2011
First published
11 Mar 2011

Phys. Chem. Chem. Phys., 2011,13, 6816-6826
Article type
Paper

Vibrational relaxation and dephasing of Rb2 attached to helium nanodroplets

B. Grüner, M. Schlesinger, Ph. Heister, W. T. Strunz, F. Stienkemeier and M. Mudrich, Phys. Chem. Chem. Phys., 2011, 13, 6816
DOI: 10.1039/C0CP02355H

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