Ultrafast non-thermal heating of water initiated by an X-ray Free-Electron Laser

aCenter for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestraße 85 DE-22607 Hamburg, Germany; bDepartment of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden; cSLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, 94025, USA; dPhoton Science, DESY, Notkestraße 85, DE-22607 Hamburg, Germany; eLawrence Livermore National Laboratory, 7000 East Av., Livermore, 94550, USA; fDepartment of Physics, University of Hamburg, Luruper Chaußee 149, Hamburg, 22761, Germany; gCentre for Ultrafast Imaging, University of Hamburg, Luruper Chaußee 149, Hamburg, 22761, Germany; hDepartment of Cell and Molecular Biology, Uppsala University, Biomedical Centre, Box 596, SE-751 24 Uppsala, Sweden