Hi everyone, Kochise Bennett will give a Seminar on Friday at 4pm-5:30pm. We'll be in *Mallinckrodt 217* (in the Department Center). Please find below Kochise's title and abstract. Cheers Christoph title: Ultrafast X-ray Diffraction in Single-Molecules: Signatures of Electronic Coherence abstact: Ultrafast time-resolved X-ray scattering made possible by novel light sources provides a wealth of information about electronic and nuclear molecular dynamical processes. The technique goes beyond merely revealing the time dependent electronic charge density traditionally used in structure determination, also monitoring the interplay of elastic and inelastic processes, nonadiabatic dynamics and electronic coherences. The various ground and excited state contributions to ultrafast diffraction from molecules in crystals, in the gas phase, and from single molecules are surveyed and illustrated by excited state nonadiabatic dynamics simulations of NaF.