Femtosecond Molecular Dynamics Enabled by Multi-Model Probes

Speaker:  Yusong Liu, Stony Brook

Program Description:
Following the coupled motion of electrons and nuclei in molecules is difficult if one uses time-resolved approaches that only provide direct information on one or the other. We combine two complementary measurements, Time-Resolved Photoelectron/PhotoIon Spectroscopy (TRPES and TRPIS) and Ultrafast Electron Diffraction (UED), to follow the electronic and nuclear dynamics gas phase CH2I2 and CH2IBr when exposed to UV light. Our measurements highlight coupled electron-nuclear dynamics that allow for electronic potential energy to be converted into nuclear kinetic energy as well as complicated structural rearrangements of the molecule that involve symmetry breaking, dissociation, rotation, and non-local wave-packet dynamics.

Contact:

Yusong Liu, yusong.liu@stonybrook.edu(link sends e-mail)

Weinacht group, Department of Physics and Astronomy, Stony Brook University