title: Electron rearrangement dynamics in dissociating I(2)^(n+) molecules accessed by extreme ultraviolet pump-probe experiments.
abstract: The charge rearrangement in dissociating I_{2}^{n+} molecules is measured as a function of the internuclear distance R using extreme ultraviolet pulses delivered by the free-electron laser in Hamburg. Within an extreme ultraviolet pump-probe scheme, the first pulse initiates dissociation by multiply ionizing I_{2}, and the delayed probe pulse further ionizes one of the two fragments at a given time, thus triggering charge rearrangement at a well-defined R. The electron transfer between the fragments is monitored by analyzing the delay-dependent ion kinetic energies and charge states. The experimental results are in very good agreement with predictions of the classical over-the-barrier model demonstrating its validity in a thus far unexplored quasimolecular regime relevant for free-electron laser, plasma, and chemistry applications.
authors.affiliation: Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Schnorr
authors.affiliation: Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Senftleben
authors.affiliation: Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Kurka
authors.affiliation: J.R. Macdonald Laboratory, Kansas State University, Manhattan, Kansas 66506, USA.
authors.forename: A
authors.initials: A
authors.lastname: Rudenko
authors.affiliation: Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Schmid
authors.affiliation: Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Pfeifer
authors.affiliation: Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Meyer
authors.affiliation: Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Kübel
authors.affiliation: J.R. Macdonald Laboratory, Kansas State University, Manhattan, Kansas 66506, USA and Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany.
authors.forename: M F
authors.initials: MF
authors.lastname: Kling
authors.affiliation: Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
authors.forename: Y H
authors.initials: YH
authors.lastname: Jiang
authors.affiliation: Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Treusch
authors.affiliation: Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Düsterer
authors.affiliation: Westfälische Wilhelms-Universität, 48419 Münster, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Siemer
authors.affiliation: Westfälische Wilhelms-Universität, 48419 Münster, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Wöstmann
authors.affiliation: Westfälische Wilhelms-Universität, 48419 Münster, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Zacharias
authors.affiliation: Helmholtz-Zentrum Berlin, 12489 Berlin, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Mitzner
authors.affiliation: Department of Physics, University of Crete, Post Office Box 2208, 71003 Heraklion, Crete, Greece.
authors.forename: T J M
authors.initials: TJ
authors.lastname: Zouros
authors.affiliation: Physikalisch-Technische Bundesanstalt, 38116 Braunschweig, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Ullrich
authors.affiliation: Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
authors.forename: C D
authors.initials: CD
authors.lastname: Schröter
authors.affiliation: Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Moshammer