Alignment, orientation, and Coulomb explosion of difluoroiodobenzene studied with the pixel imaging mass spectrometry (PImMS) camera

Research output: Contribution to journalArticle


Laser-induced adiabatic alignment and mixed-field orientation of 2,6-difluoroiodobenzene (C6H3F2I) molecules are probed by Coulomb explosion imaging following either near-infrared strong-field ionization or extreme-ultraviolet multi-photon inner-shell ionization using free-electron laser pulses. The resulting photoelectrons and fragment ions are captured by a double-sided velocity map imaging spectrometer and projected onto two position-sensitive detectors. The ion side of the spectrometer is equipped with a pixel imaging mass spectrometry camera, a time-stamping pixelated detector that can record the hit positions and arrival times of up to four ions per pixel per acquisition cycle. Thus, the time-of-flight trace and ion momentum distributions for all fragments can be recorded simultaneously. We show that we can obtain a high degree of one-and three-dimensional alignment and mixed-field orientation and compare the Coulomb explosion process induced at both wavelengths.


  • Kasra Amini
  • Rebecca Boll
  • Alexandra Lauer
  • Michael Burt
  • Jason W.L. Lee
  • Lauge Christensen
  • Felix Brauβe
  • Terence Mullins
  • Evgeny Savelyev
  • Utuq Ablikim
  • Nora Berrah
  • Cédric Bomme
  • Stefan Düsterer
  • Benjamin Erk
  • Hauke Höppner
  • Thomas Kierspel
  • Faruk Krecinic
  • Jochen Küpper
  • Maria Müller
  • Erland Müller
  • Harald Redlin
  • Arnaud Rouzée
  • Nora Schirmel
  • Jan Thøgersen
  • Simone Techert
  • Sven Toleikis
  • Rolf Treusch
  • Sebastian Trippel
  • Anatoli Ulmer
  • Joss Wiese
  • Claire Vallance
  • Artem Rudenko
  • Henrik Stapelfeldt
  • Mark Brouard
  • Daniel Rolles
External organisations
  • University of Oxford
  • German Electron Synchrotron (DESY)
  • Kansas State University
  • University of Connecticut
  • University of Hamburg
  • Technical University of Berlin
  • Max Planck Institute for Biophysical Chemistry
  • University of Göttingen
  • Aarhus University
  • Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy
  • Carl von Ossietzky University of Oldenburg
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Chemistry
Original languageEnglish
Article number013933
JournalJournal of Chemical Physics
Issue number1
Publication statusPublished - 2017 Jul 7
Publication categoryResearch