Details

Autor(en) / Beteiligte

• von Vangerow, J
• Sieg, A
• Stienkemeier, F
• Mudrich, M
• Leal, A
• Mateo, D
• Hernando, A
• Barranco, M
• Pi, M

Titel

Desorption Dynamics of Heavy Alkali Metal Atoms (Rb, Cs) Off the Surface of Helium Nanodroplets

Ist Teil von

• The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, 2014-08, Vol.118 (33), p.6604-6614

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2014

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We present a combined ion imaging and density functional theory study of the dynamics of the desorption process of rubidium and cesium atoms off the surface of helium nanodroplets upon excitation of the perturbed 6s and 7s states, respectively. Both experimental and theoretical results are well represented by the pseudodiatomic model for effective masses of the helium droplet in the desorption reaction of m eff/m He ≈ 10 (Rb) and 13 (Cs). Deviations from this model are found for Rb excited to the 6p state. Photoelectron spectra indicate that the dopant–droplet interaction induces relaxation into low-lying electronic states of the desorbed atoms in the course of the ejection process.