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25 April 2024

» arxiv » 1109.2298

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Imaging spectroscopy of rubidium atoms attached to helium nanodroplets
L. Fechner ; B. Gruener ; A. Sieg ; C. Callegari ; F. Ancilotto ; F. Stienkemeier ; M. Mudrich ;
Date:	11 Sep 2011
Abstract:	Highly excited states of rubidium (Rb) atoms attached to helium (He) nanodroplets are studied by two-photon ionization spectroscopy in combination with electron and ion imaging. Photoion spectra and angular distributions are in good agreement with a pseudodiatomic model for the RbHe_N complex. Repulsive interactions in the excited states entail fast dissociation followed by ionization of free Rb atoms as well as of RbHe and RbHe_2 exciplexes. Nonresonant excitation generates Rb atoms in low-lying electronic levels by statistical evaporation-like desorption.
Source:	arXiv, 1109.2298
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