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Quantum dynamics of Rb atoms desorbing off the surface of He nanodroplets

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arxiv 1809.04846 v1 pith:FGBP3FH3 submitted 2018-09-13 physics.atm-clus

classification physics.atm-clus
keywords atomsquantumdopantdropletdynamicsnanodropletspacketphotoelectron
verification ladder T0 review T1 audit T2 compute T3 formal
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The desorption of excited rubidium (Rb) atoms off the surface of helium (He) nanodroplets is studied in detail using femtosecond time-resolved photoion and photoelectron imaging spectroscopy in combination with quantum wave packet simulations. The good agreement of the measured time-dependent velocity distributions with the simulation when exciting the Rb dopant atoms into the 6p-state supports the pseudo-diatomic model (PDM) for the Rb-He droplet interaction, even on the level of quantum wave packet dynamics. Time-resolved photoelectron spectra reveal the partitioning of excitation energy into the dopant and the droplet degrees of freedom.

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