Thomas R M Barends, Alexander Gorel, Swarnendu Bhattacharyya, Giorgio Schirò, Camila Bacellar, Claudio Cirelli, Jacques-Philippe Colletier, Lutz Foucar, Marie Luise Grünbein, Elisabeth Hartmann, Mario Hilpert, James M Holton, Philip J M Johnson, Marco Kloos, Gregor Knopp, Bogdan Marekha, Karol Nass, Gabriela Nass Kovacs, Dmitry Ozerov, Miriam Stricker, Martin Weik, R Bruce Doak, Robert L Shoeman, Christopher J Milne, Miquel Huix-Rotllant, Marco Cammarata, Ilme Schlichting
High-intensity femtosecond pulses from an X-ray free-electron laser enable pump-probe experiments for the investigation of electronic and nuclear changes during light-induced reactions. On timescales ranging from femtoseconds to milliseconds and for a variety of biological systems, time-resolved serial femtosecond crystallography (TR-SFX) has provided detailed structural data for light-induced isomerization, breakage or formation of chemical bonds and electron transfer1,2 . However, all ultrafast TR-SFX studies to date have employed such high pump laser energies that nominally several photons were absorbed per chromophore3-17 ...
February 14, 2024: Nature