Charge Transfer Dynamics in Dissociation of Halomethanes induced by Extreme Ultraviolet Free-Electron Lase

POSTER

Abstract

Electron transfer plays an important role in chemical bond formation and cleavage and is related to electron delocalization and localization. Ultrafast electron transfer in the dissociative ionization of CH3I and CH2ICl was investigated at FLASH2 by an extreme ultraviolet (EUV) pump-probe experiment. The charge transfer is traced by the yields of the dicationic species as a function of delay between the two EUV pulses. An exponential dependence of charge transfer on the internuclear distance is observed, which shows considerable deviation from the classical over-the-barrier model. Considering the thermal energy of the electrons, we develop a semi-classical model based on a reaction rate equation that quantitatively reproduces the observed behavior at sufficiently large internuclear separations.

*Supported by the Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U. S. Department of Energy under Award # DE-SC0019451.

Presenters

  • Enliang Wang

    • Kansas State university
    • Kansas State University

Authors

  • Balram Kaderiya

    • Kansas State University

  • Enliang Wang

    • Kansas State university
    • Kansas State University

  • Xiang Li

    • SLAC - Natl Accelerator Lab

  • Severin Meister

    • Max-Planck-Institut f¨ur Kernphysik, 69117 Heidelberg, Germany
    • Max-Planck-Institute for Nuclear Physics, 69117 Heidelberg, Germany
    • MPI Heidelberg
    • Max-Planck-Institut für Kernphysik

  • Georg Schmid

    • Max-Planck-Institut für Kernphysik

  • Sven Augustin

    • Max-Planck-Institut für Kernphysik; Paul Scherrer Institut

  • Kirsten Schnorr

    • Max-Planck-Institut für Kernphysik; Paul Scherrer Institut

  • Yifan Liu

    • Max-Planck-Institut für Kernphysik

  • Hannes Lindenblatt

    • Max-Planck-Institut f¨ur Kernphysik, 69117 Heidelberg, Germany
    • Max-Planck-Institute for Nuclear Physics, 69117 Heidelberg, Germany
    • Max-Planck-Institut für Kernphysik

  • Florian Trost

    • Max-Planck-Institut f¨ur Kernphysik, 69117 Heidelberg, Germany
    • Max-Planck-Institute for Nuclear Physics, 69117 Heidelberg, Germany
    • Max-Planck-Institut für Kernphysik

  • Markus Braune

    • Deutsches Elektronen-Synchrotron (DESY), 22607 Hamburg, Germany
    • Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
    • Deutsches Elektronen-Synchrotron DESY

  • Daniel Rolles

    • Kansas State University
    • J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, KS, US

  • Robert Moshammer

    • Max-Planck-Institute for Nuclear Physics, 69117 Heidelberg, Germany
    • MPI-K Heidelberg
    • MPI Heidelberg
    • Max-Planck-Institut für Kernphysik

  • Artem Rudenko

    • J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, KS, US
    • Kansas State University