Ultrafast temporal evolution of interatomic Coulombic decay in NeKr dimers

F. Trinter; T. Miteva; M. Weller; A. Hartung; M. Richter; J. B. Williams; A. Gatton; B. Gaire; J. Sartor; A. L. Landers; B. Berry; I. Ben-Itzhak; N. Sisourat; V. Stumpf; K. Gokhberg; R. Dörner; T. Jahnke; T. Weber

doi:10.1039/D1SC04630F

Ultrafast temporal evolution of interatomic Coulombic decay in NeKr dimers†

F. Trinter,

*^ab T. Miteva,

^c M. Weller,^ad A. Hartung,^a M. Richter,^a J. B. Williams,^e A. Gatton,^df B. Gaire,

^d J. Sartor,^f A. L. Landers,^f B. Berry,^g I. Ben-Itzhak,

^g N. Sisourat,^c V. Stumpf,^h K. Gokhberg,^h R. Dörner,^a T. Jahnke*ⁱ and T. Weber

*^d

Author affiliations

* Corresponding authors

^a Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt am Main, Germany
E-mail: trinter@atom.uni-frankfurt.de

^b Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany

^c Laboratoire de Chimie Physique Matière et Rayonnement, UMR 7614, Sorbonne Université, CNRS, 75005 Paris, France

^d Lawrence Berkeley National Laboratory, Chemical Sciences Division, Berkeley, California 94720, USA
E-mail: tweber@lbl.gov

^e Department of Physics, University of Nevada, Reno, Nevada 89557, USA

^f Department of Physics, Auburn University, Auburn, Alabama 36849, USA

^g J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA

^h Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, 69120 Heidelberg, Germany

ⁱ European XFEL GmbH, 22869 Schenefeld, Germany
E-mail: till.jahnke@xfel.eu

Abstract

We investigate interatomic Coulombic decay in NeKr dimers after neon inner-valence photoionization [Ne⁺(2s⁻¹)] using a synchrotron light source. We measure with high energy resolution the two singly charged ions of the Coulomb-exploding dimer dication and the photoelectron in coincidence. By carefully tracing the post-collision interaction between the photoelectron and the emitted ICD electron we are able to probe the temporal evolution of the state as it decays. Although the ionizing light pulses are 80 picoseconds long, we determine the lifetime of the intermediate dimer cation state and visualize the contraction of the nuclear structure on the femtosecond time scale.

Chemical Science

Ultrafast temporal evolution of interatomic Coulombic decay in NeKr dimers†

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