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Femtosecond photoelectron diffraction on laser-aligned molecules: Towards time-resolved imaging of molecular structure

R. Boll, D. Anielski, C. Bostedt, J. D. Bozek, L. Christensen, R. Coffee, S. De, P. Decleva, S. W. Epp, B. Erk, L. Foucar, F. Krasniqi, J. Küpper, A. Rouzée, B. Rudek, A. Rudenko, S. Schorb, H. Stapelfeldt, M. Stener, S. Stern, S. Techert, S. Trippel, M. J. J. Vrakking, J. Ullrich, and D. Rolles
Phys. Rev. A 88, 061402(R) – Published 6 December 2013
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Abstract

We demonstrate an experimental method to record snapshot diffraction images of polyatomic gas-phase molecules, which can, in a next step, be used to probe time-dependent changes in the molecular geometry during photochemical reactions with femtosecond temporal and angstrom spatial resolution. Adiabatically laser-aligned 1-ethynyl-4-fluorobenzene (C8H5F) molecules were imaged by diffraction of photoelectrons with kinetic energies between 31 and 62 eV, created from core ionization of the fluorine (1s) level by 80 fs x-ray free-electron-laser pulses. Comparison of the experimental photoelectron angular distributions with density functional theory calculations allows relating the diffraction images to the molecular structure.

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  • Received 6 August 2013

DOI:https://doi.org/10.1103/PhysRevA.88.061402

©2013 American Physical Society

Authors & Affiliations

R. Boll1,2,3,*, D. Anielski1,2,3, C. Bostedt4, J. D. Bozek4, L. Christensen5, R. Coffee4, S. De5,6, P. Decleva7, S. W. Epp1,2,8, B. Erk1,2,3, L. Foucar1,9, F. Krasniqi1,8,9, J. Küpper10,11,12, A. Rouzée13,14, B. Rudek1,2,3,15, A. Rudenko1,2,16, S. Schorb4, H. Stapelfeldt17, M. Stener7, S. Stern10,11, S. Techert3,18,19, S. Trippel10, M. J. J. Vrakking13,14, J. Ullrich1,2,15, and D. Rolles1,3,9,†

  • 1Max Planck Advanced Study Group at CFEL, 22607 Hamburg, Germany
  • 2Max Planck Institute for Nuclear Physics, 69117 Heidelberg, Germany
  • 3Deutsches Elektronen Synchrotron (DESY), 22607 Hamburg, Germany
  • 4SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
  • 5Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
  • 6Saha Institute of Nuclear Physics, 700064 Kolkata, India
  • 7Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Trieste, 34127 Trieste, Italy
  • 8Max Planck Institute for Structural Dynamics, 22607 Hamburg, Germany
  • 9Max Planck Institute for Medical Research, 69120 Heidelberg, Germany
  • 10Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany
  • 11Department of Physics, University of Hamburg, 22761 Hamburg, Germany
  • 12Center for Ultrafast Imaging, University of Hamburg, 22761 Hamburg, Germany
  • 13Max-Born-Institut, 12489 Berlin, Germany
  • 14FOM-Institute AMOLF, 1098 XG Amsterdam, The Netherlands
  • 15Physikalisch-Technische Bundesanstalt (PTB), 38116 Braunschweig, Germany
  • 16J.R. MacDonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
  • 17Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
  • 18Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
  • 19Institute of X-ray Physics, 37077 Göttingen University, Germany

  • *rebecca.boll@asg.mpg.de
  • daniel.rolles@desy.de

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Vol. 88, Iss. 6 — December 2013

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