{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T12:11:46Z","timestamp":1792757506442,"version":"4.5.0"},"reference-count":56,"publisher":"AIP Publishing","issue":"5","funder":[{"DOI":"10.13039\/100000015","name":"U.S. Department of Energy","doi-asserted-by":"publisher","award":["DOE DE-FG02-08ER"],"award-info":[{"award-number":["DOE DE-FG02-08ER"]}],"id":[{"id":"10.13039\/100000015","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["NSF EAR 0738871"],"award-info":[{"award-number":["NSF EAR 0738871"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2013,2,7]]},"abstract":"<jats:p>The equation of state (EoS), refractive index n, and polarizability \u03b1 of water have been determined up to 673 K and 7 GPa from acoustic velocity measurements conducted in a resistively heated diamond anvil cell using Brillouin scattering spectroscopy. Measured acoustic velocities compare favorably with previous experimental studies but they are lower than velocities calculated from the extrapolation of the IAPWS95 equation of state above 3 GPa at 673 K and deviations increase up to 6% at 7 GPa. Densities calculated from the velocity data were used to propose an empirical EoS suitable in the 0.6\u20137 GPa and 293\u2013673 K range with a total estimated uncertainty of 0.5% or less. The density model and thermodynamic properties derived from the experimental EoS have been compared to several EoS proposed in the literature. The IAPWS95 EoS provides good agreement, although underestimates density by up to 1.2% at 7 GPa and 673 K and the thermodynamic properties deviate greatly (10%-20%) outside the estimated uncertainties above 4 GPa. The refractive index n of liquid water increases linearly with density and do not depend intrinsically on temperature. The polarizability decreases with pressure by less than 4% within the investigated P-T range, suggesting strong intermolecular interactions in H2O that are consistent with the prevalence of the hydrogen bond network in the fluid. The results will allow the refinement of interaction potentials that consider polarization effects for a better understanding of solvent-solvent and ion-solvent interactions in aqueous fluids at high pressure and temperature conditions.<\/jats:p>","DOI":"10.1063\/1.4789359","type":"journal-article","created":{"date-parts":[[2013,2,5]],"date-time":"2013-02-05T18:25:21Z","timestamp":1360088721000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":39,"title":["Equation of state, refractive index and polarizability of compressed water to 7 GPa and 673 K"],"prefix":"10.1063","volume":"138","author":[{"given":"Carmen","family":"Sanchez-Valle","sequence":"first","affiliation":[{"name":"Institute for Geochemistry and Petrology 1 , ETH Zurich, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Davide","family":"Mantegazzi","sequence":"additional","affiliation":[{"name":"Institute for Geochemistry and Petrology 1 , ETH Zurich, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jay D.","family":"Bass","sequence":"additional","affiliation":[{"name":"University of Illinois at Urbana-Champaign 2 Department of Geology, , Urbana, Illinois 61801, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eric","family":"Reusser","sequence":"additional","affiliation":[{"name":"Institute for Geochemistry and Petrology 1 , ETH Zurich, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2013,2,5]]},"reference":[{"key":"2023062523304285800_c1","doi-asserted-by":"publisher","first-page":"2672","DOI":"10.1002\/anie.200462468","volume":"44","year":"2005","journal-title":"Angew. 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