title: Electron Localization in Dissociating H_{2}^{+} by Retroaction of a Photoelectron onto Its Source.
abstract: We investigate the dissociation of H_{2}^{+} into a proton and a H^{0} after single ionization with photons of an energy close to the threshold. We find that the p^{+} and the H^{0} do not emerge symmetrically in the case of the H_{2}^{+} dissociating along the 1sσ_{g} ground state. Instead, a preference for the ejection of the p^{+} in the direction of the escaping photoelectron can be observed. This symmetry breaking is strongest for very small electron energies. Our experiment is consistent with a recent prediction by Serov and Kheifets [Phys. Rev. A 89, 031402 (2014)]. In their model, which treats the photoelectron classically, the symmetry breaking is induced by the retroaction of the long-range Coulomb potential onto the dissociating H_{2}^{+}.
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Waitz
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Aslitürk
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: N
authors.initials: N
authors.lastname: Wechselberger
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: H K
authors.initials: HK
authors.lastname: Gill
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Rist
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Wiegandt
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Goihl
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Kastirke
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Weller
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Bauer
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Metz
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.|Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors.forename: F P
authors.initials: FP
authors.lastname: Sturm
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Voigtsberger
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Zeller
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Trinter
authors.affiliation: Helmholtz-Zentrum Berlin für Materialien und Energie, Institute G-ISRR, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Schiwietz
authors.affiliation: Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors.forename: T
authors.initials: T
authors.lastname: Weber
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: J B
authors.initials: JB
authors.lastname: Williams
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: M S
authors.initials: MS
authors.lastname: Schöffler
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: L Ph H
authors.initials: LP
authors.lastname: Schmidt
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Jahnke
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Dörner