Abstract
Real-space motions of molecules and ions in an aqueous solution of sodium chloride are studied with high-resolution inelastic x-ray scattering. We focus on the correlated dynamics of water molecules and salt ions, instead of the instantaneous structure and the rotational and reorientation dynamics that have been studied using scattering techniques and optical spectroscopy, respectively. The real-space analysis in terms of the Van Hove function illustrates the effect of salt ions to slow down the local correlated dynamics of surrounding water in the hydration shells.
| Original language | English |
|---|---|
| Article number | 065604 |
| Journal | Physical Review Materials |
| Volume | 3 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 17 2019 |
Funding
This work was sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, which is managed by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 for the U.S. Department of Energy. IXS experiments at BL43LXU, SPring-8 were conducted under the approval of RIKEN (Proposals No. 20160102, No. 20170075, and No. 20180069). This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the U.S. DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. High-energy x-ray diffraction measurement at 6-ID-D, APS, was conducted with the help of Dr. D. Robinson.
| Funders | Funder number |
|---|---|
| DOE Office of Science | |
| U.S. Department of Energy | |
| Office of Science | |
| Argonne National Laboratory | |
| Oak Ridge National Laboratory |