title: Charge transfer in dissociating iodomethane and fluoromethane molecules ionized by intense femtosecond X-ray pulses.
abstract: Ultrafast electron transfer in dissociating iodomethane and fluoromethane molecules was studied at the Linac Coherent Light Source free-electron laser using an ultraviolet-pump, X-ray-probe scheme. The results for both molecules are discussed with respect to the nature of their UV excitation and different chemical properties. Signatures of long-distance intramolecular charge transfer are observed for both species, and a quantitative analysis of its distance dependence in iodomethane is carried out for charge states up to I(21+). The reconstructed critical distances for electron transfer are in good agreement with a classical over-the-barrier model and with an earlier experiment employing a near-infrared pump pulse.
authors.forename: Rebecca
authors.initials: R
authors.lastname: Boll
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY) , 22607 Hamburg, Germany.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Erk
authors.affiliation: SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA.
authors.forename: Ryan
authors.initials: R
authors.lastname: Coffee
authors.affiliation: Center for Free-Electron Laser Science, DESY , 22607 Hamburg, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Trippel
authors.forename: Thomas
authors.initials: T
authors.lastname: Kierspel
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY) , 22607 Hamburg, Germany.
authors.forename: Cédric
authors.initials: C
authors.lastname: Bomme
authors.affiliation: SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA.
authors.forename: John D
authors.initials: JD
authors.lastname: Bozek
authors.affiliation: J.R. Macdonald Laboratory, Kansas State University , Manhattan, Kansas 66506, USA.
authors.forename: Mitchell
authors.initials: M
authors.lastname: Burkett
authors.affiliation: SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Carron
authors.affiliation: SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA.
authors.forename: Ken R
authors.initials: KR
authors.lastname: Ferguson
authors.affiliation: Max Planck Institute for Medical Research , 69120 Heidelberg, Germany.
authors.forename: Lutz
authors.initials: L
authors.lastname: Foucar
authors.forename: Jochen
authors.initials: J
authors.lastname: Küpper
authors.affiliation: Sorbonne Universités , UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matiere et Rayonnement, F-75005 Paris, France.
authors.forename: Tatiana
authors.initials: T
authors.lastname: Marchenko
authors.forename: Catalin
authors.initials: C
authors.lastname: Miron
authors.forename: Minna
authors.initials: M
authors.lastname: Patanen
authors.affiliation: SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA.
authors.forename: Timur
authors.initials: T
authors.lastname: Osipov
authors.affiliation: SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Schorb
authors.affiliation: Sorbonne Universités , UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matiere et Rayonnement, F-75005 Paris, France.
authors.forename: Marc
authors.initials: M
authors.lastname: Simon
authors.affiliation: SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA.
authors.forename: Michelle
authors.initials: M
authors.lastname: Swiggers
authors.forename: Simone
authors.initials: S
authors.lastname: Techert
authors.affiliation: IMRAM, Tohoku University , 980-8577 Sendai, Japan.
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Ueda
authors.forename: Christoph
authors.initials: C
authors.lastname: Bostedt
authors.forename: Daniel
authors.initials: D
authors.lastname: Rolles
authors.affiliation: J.R. Macdonald Laboratory, Kansas State University , Manhattan, Kansas 66506, USA.
authors.forename: Artem
authors.initials: A
authors.lastname: Rudenko