title: Imaging Excited-State Dynamics of Doped He Nanodroplets in Real-Time.
abstract: The real-time dynamics of excited alkali metal atoms (Rb) attached to quantum fluid He nanodroplets is investigated using femtosecond imaging spectroscopy and time-dependent density functional theory. We disentangle the competing dynamics of desorption of excited Rb atoms off the He droplet surface and solvation inside the droplet interior as the Rb atom is ionized. For Rb excited to the 5p and 6p states, desorption occurs on starkly differing time scales (∼100 versus ∼1 ps, respectively). The comparison between theory and experiment indicates that desorption proceeds either impulsively (6p) or in a transition regime between impulsive dissociation and complex desorption (5p).
authors.affiliation: Physikalisches Institut, Universität Freiburg , Hermann-Herder-Str. 3, 79104 Freiburg, Germany.
authors.forename: Johannes
authors.initials: J
authors.lastname: von Vangerow
authors.affiliation: Laboratoire des Collisions, Agrégats, Réactivité, IRSAMC, UMR 5589, CNRS et Université Paul Sabatier-Toulouse 3, 118 route de Narbonne, F-31062 Toulouse Cedex 09, France.
authors.forename: François
authors.initials: F
authors.lastname: Coppens
authors.affiliation: Departament FQA, Facultat de Física, and IN2UB, Universitat de Barcelona , Diagonal 645, 08028 Barcelona, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Leal
authors.affiliation: Departament FQA, Facultat de Física, and IN2UB, Universitat de Barcelona , Diagonal 645, 08028 Barcelona, Spain.
authors.forename: Martí
authors.initials: M
authors.lastname: Pi
authors.affiliation: Laboratoire des Collisions, Agrégats, Réactivité, IRSAMC, UMR 5589, CNRS et Université Paul Sabatier-Toulouse 3, 118 route de Narbonne, F-31062 Toulouse Cedex 09, France.|Departament FQA, Facultat de Física, and IN2UB, Universitat de Barcelona , Diagonal 645, 08028 Barcelona, Spain.
authors.forename: Manuel
authors.initials: M
authors.lastname: Barranco
authors.affiliation: Laboratoire des Collisions, Agrégats, Réactivité, IRSAMC, UMR 5589, CNRS et Université Paul Sabatier-Toulouse 3, 118 route de Narbonne, F-31062 Toulouse Cedex 09, France.
authors.forename: Nadine
authors.initials: N
authors.lastname: Halberstadt
authors.affiliation: Physikalisches Institut, Universität Freiburg , Hermann-Herder-Str. 3, 79104 Freiburg, Germany.
authors.forename: Frank
authors.initials: F
authors.lastname: Stienkemeier
authors.affiliation: Physikalisches Institut, Universität Freiburg , Hermann-Herder-Str. 3, 79104 Freiburg, Germany.
authors.forename: Marcel
authors.identifier: http://orcid.org/0000-0003-4959-5220
authors.initials: M
authors.lastname: Mudrich