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Journal Article

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

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Epp,  S. W.
Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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PhysRevA.88.061402.pdf
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Citation

Boll, R., Anielski, D., Bostedt, C., Bozek, J., Christensen, L., Coffee, R., et al. (2013). Femtosecond photoelectron diffraction on laser-aligned molecules: Towards time-resolved imaging of molecular structure. Physical Review A, 88(6): 061402(R). doi:10.1103/PhysRevA.88.061402.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0024-BB1F-5
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.