Observation of non-ballistic dissociation trajectories in iodine pump-probe x-ray scattering experiments
ORAL
Abstract
Frequency resolved x-ray scattering (FRXS) analysis of ultrafast time-resolved internal motion in molecules is especially useful in identifying low signal-to-noise features such as dissociation. Weak vibrations and terminal dissociation speeds, as well as dissociation time shifts, have been reported using this method. Here we show that FRXS can also reveal accelerations during dissociation, which appear as diffuse features with characteristic fringe patterns in the FRXS map. Simulations of non-ballistic iodine trajectories are compared to iodine photodissociation x-ray scattering experiments, revealing evidence for non-ballistic dissociation trajectories subject to both repulsive and attractive forces.
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Authors
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Ian Gabalski
PULSE Institute/Stanford University, Stanford University
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Matthew Ware
PULSE Institute/Stanford University
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Philip Bucksbaum
PULSE Institute/Stanford University, Stanford PULSE Institute, SLAC National Accelerator Laboratory, PULSE Institute, Stanford University, Stanford University, Department of Physics and Applied Physics at Stanford University, PULSE Institute, Stanford PULSE Institute, Stanford University and SLAC