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Royal Society of Chemistry, Faraday Discussions, (171), p. 57-80

DOI: 10.1039/c4fd00037d

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Imaging Molecular Structure through Femtosecond Photoelectron Diffraction on Aligned and Oriented Gas-Phase Molecules

Journal article published in 2014 by Rebecca Boll, Arnaud Rouzée, Marcus Adolph, Denis Anielski, Andrew Aquila ORCID, Sadia Bari, Cédric Bomme, Christoph Bostedt, John D. Bozek, Henry N. Chapman, Lauge Christensen, Ryan Coffee, Niccola Coppola, Sankar De, Piero Decleva and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

This paper gives an account of our progress towards performing femtosecond timeresolved 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, laser-aligned 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.