title: Hydration dynamics at femtosecond time scales and angstrom length scales from inelastic x-ray scattering.
abstract: 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".
authors.affiliation: Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
authors.forename: Robert H
authors.initials: RH
authors.lastname: Coridan
authors.forename: Nathan W
authors.initials: NW
authors.lastname: Schmidt
authors.forename: Ghee Hwee
authors.initials: GH
authors.lastname: Lai
authors.forename: Rahul
authors.initials: R
authors.lastname: Godawat
authors.forename: Michael
authors.initials: M
authors.lastname: Krisch
authors.forename: Shekhar
authors.initials: S
authors.lastname: Garde
authors.forename: Peter
authors.initials: P
authors.lastname: Abbamonte
authors.forename: Gerard C L
authors.initials: GC
authors.lastname: Wong