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Title: Unraveling the Spectral Signatures of Solvent Ordering in K-edge XANES of Aqueous Na+

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.5024568· OSTI ID:1492306

The aqueous solvation structure of the Na+ ion is studied both by molecular dynamics (MD) simulations and K-edge X-ray absorption near edge spectroscopy (XANES). In this paper, we present a systematic study contrasting the differences in the predicted XANES spectra, using molecular configurations generated from classical and quantum MD. Using a set of suitable order parameters, we elucidate how the spectroscopic features are influenced by the local solvation structure around the Na+ ion. Lastly, our findings suggest that XANES is sensitive to fluctuations between the first and second solvation shells and can distinguish between classical and quantum interaction representations used to generate molecular ensembles.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1492306
Alternate ID(s):
OSTI ID: 1472223
Report Number(s):
PNNL-SA-131808
Journal Information:
Journal of Chemical Physics, Vol. 149, Issue 12; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

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Cited By (1)

Quantifying the hydration structure of sodium and potassium ions: taking additional steps on Jacob's Ladder text January 2020

Figures / Tables (9)