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Showing 1–9 of 9 results
Advanced filters: Author: Andreas Galler Clear advanced filters

  • In time-resolved measurements it is crucial to know the time delay between the exciting and probing light pulses. Here the authors demonstrate a self-referencing common-path interferometer method measuring the arrival time between the X-ray free electron laser and the optical pulse to the target and thus their inherent timing jitter.

    • Michael Diez
    • Henning Kirchberg
    • Christian Bressler
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-9

  • The change from low-spin hexacoordinated to high-spin pentacoordinated domed form in heam upon ligand detachment and the reverse process underlie the respiratory function. The authors, using femtosecond time-resolved X-ray emission spectroscopy, capture the transient states connecting the two forms in myoglobin-NO upon NO photoinduced detachment.

    • Dominik Kinschel
    • Camila Bacellar
    • Majed Chergui
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • Photoinduced electron transfer in solvated molecular assemblies occurs on the ultrafast timescale before full electronic and geometric relaxation take place. Here Canton et al.monitor this out-of-equilibrium process in a donor–acceptor bimetallic assembly using an X-ray free-electron laser.

    • Sophie E. Canton
    • Kasper S. Kjær
    • Martin M. Nielsen
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-10

  • Femtosecond resolution X-ray fluorescence spectroscopy is shown to track the charge and spin dynamics triggered when an iron coordination complex is excited by light, and establishes the critical role of intermediate spin states in the de-excitation process.

    • Wenkai Zhang
    • Roberto Alonso-Mori
    • Kelly J. Gaffney
    Research
    Nature
    Volume: 509, P: 345-348

  • Coincidence experiments at free-electron lasers enable time resolved site-specific investigations of molecular photochemistry at high signal rates, but isolating individual dissociation processes still poses a considerable technical challenge. Here, the authors use electron-ion partial covariance imaging to isolate otherwise elusive chemical shifts in UV-induced photofragmentation pathways of the prototypical chiral molecule 1-iodo-2-methylbutane.

    • Felix Allum
    • Valerija Music
    • Markus Ilchen
    ResearchOpen Access
    Communications Chemistry
    Volume: 5, P: 1-10

  • Ultrashort circularly polarised light pulses from free-electron lasers offer a route for exploring chiral molecules and their dynamics, but remain challenging to harness. Here, X-ray pump-probe experiments enable a site-specific photoelectron circular dichroism measurement on a dissociating chiral molecule.

    • Markus Ilchen
    • Philipp Schmidt
    • Philipp V. Demekhin
    ResearchOpen Access
    Communications Chemistry
    Volume: 4, P: 1-9