Imaging Molecular Structure through Femtosecond Photoelectron   Diffraction on Aligned and Oriented Gas-Phase Molecules
  This paper gives an account of our progress towards performing femtosecond time-resolved photoelectron diffraction on gas-phase molecules in a pump-probe setup combining optical lasers and an X-ray Free-Electron Laser. We present results of two experiments aimed at measuring photoelectron angular distributions of laser-aligned 1-ethynyl-4-fluorobenzene (C8H5F) and dissociating, laseraligned 1,4-dibromobenzene (C6H4Br2) molecules and discuss them in the larger context of photoelectron diffraction on gas-phase molecules. We also show how the strong nanosecond laser pulse used for adiabatically laser-aligning the molecules influences the measured electron and ion spectra and angular distributions, and discuss how this may affect the outcome of future time-resolved photoelectron diffraction experiments. 
R. Boll, A. Rouzee, M. Adolph, D. Anielski, A. Aquila, S. Bari, C.   Bomme, C. Bostedt, J. D. Bozek, H. N. Chapman, L. Chris...
physics.atom-ph