Details

Autor(en) / Beteiligte

• Sieg, A
• von Vangerow, J
• Stienkemeier, F
• Dulieu, O
• Mudrich, M

Titel

Desorption Dynamics of Rb2 Molecules Off the Surface of Helium Nanodroplets

Ist Teil von

• The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, 2016-10, Vol.120 (39), p.7641-7649

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The desorption dynamics of rubidium dimers (Rb2) off the surface of helium nanodroplets induced by laser excitation is studied by employing both nanosecond and femtosecond ion imaging spectroscopy. Similarly to alkali metal atoms, we find that the Rb2 desorption process resembles the dissociation of a diatomic molecule. However, both angular and energy distributions of detected Rb2 + ions appear to be most crucially determined by the Rb2 intramolecular degrees of freedom rather than by those of the Rb2He N complex. The pump–probe dynamics of Rb2 + is found to be slower than that of Rb+, pointing at a weaker effective guest–host repulsion for excited molecules than for single atoms.