Hydration dynamics at femtosecond time scales and angstrom length scales from inelastic x-ray scattering.
We use high resolution dynamical structure factor S(q,omega) data measured with inelastic x-ray scattering to reconstruct the Green's function of water, which describes its density response to a point charge, and provides a fundamental comparative model for solvation behavior at molecular time scales and length scales. Good agreement is found with simulations, scattering and spectroscopic experiments. These results suggest that a moving point charge will modify its hydration structure, evolving from a spherical closed shell to a steady-state cylindrical hydration "sleeve".
Coridan
Robert H
RH
Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
Schmidt
Nathan W
NW
Lai
Ghee Hwee
GH
Godawat
Rahul
R
Krisch
Michael
M
Garde
Shekhar
S
Abbamonte
Peter
P
Wong
Gerard C L
GC