Hydration Dynamics at Femtosecond Time Scales and Angstrom Length Scales from Inelastic X-Ray Scattering

We use high resolution dynamical structure factor S(q,ω) 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”.

Reference

Coridan RH, Schmidt NW, Lai GH, Godawat R, Krisch M, Garde S, Abbamonte P and Wong GCL (). " Hydration Dynamics at Femtosecond Time Scales and Angstrom Length Scales from Inelastic X-Ray Scattering ," Phys. Rev. Lett., 103(23), 237402

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Bibtex

@article{coridan2009hydration,
  title   = {Hydration dynamics at femtosecond time scales and Angstrom length scales from inelastic X-Ray scattering},
  author  = {Coridan, Robert H and Schmidt, Nathan W and Lai, Ghee Hwee and Godawat, Rahul and Krisch, Michael and Garde, Shekhar and Abbamonte, Peter and Wong, Gerard CL},
  journal = {Physical review letters},
  volume  = {103},
  number  = {23},
  pages   = {237402},
  year    = {2009},
  doi     = {10.1103/PhysRevLett.103.237402}
}