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Probing of Structure Factor of Water to 57 GPa and 1500 K

Published online by Cambridge University Press:  26 February 2011

Alexander F. Goncharov
Affiliation:
goncharov@gl.ciw.edu, Carnegie Institution of Washington, Geophysical Laboratory, 5251 Broad Branch Road NW, Washington, DC, 20015, United States, 202 478 8947, 202 478 8901
Chrystele Sanloup
Affiliation:
sanloup@ccr.jussieu.fr, Universite Pierre et Marie Curie and Institut du Globe de Paris, Paris, N/A, France
Nir Goldman
Affiliation:
goldman14@llnl.gov, University of California, Lawrence Livermore National Laboratory, Livermore, CA, 94551, United States
Jonathan C. Crowhurst
Affiliation:
crowhurst1@llnl.gov, University of California, Lawrence Livermore National Laboratory, Livermore, CA, 94551, United States
Lawrence E. Fried
Affiliation:
lfried@llnl.gov, University of California, Lawrence Livermore National Laboratory, Livermore, CA, 94551, United States
Nicola Guignot
Affiliation:
guignot@esrf.fr, European Synchrotron Radiation Facility, Grenoble, N/A, France
Mohamed Mezouar
Affiliation:
mezouar@esrf.fr, European Synchrotron Radiation Facility, Grenoble, N/A, France
Yue Meng
Affiliation:
ymeng@hpcat.aps.anl.gov, HPCAT, Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, United States
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Abstract

The x-ray structure factor of water has been measured along the melting line to 57 GPa and 1500 K using focused monochromatic synchrotron radiation and laser heated diamond anvil cell. The oxygen radial distribution function, g(r) is determined from these data. We have also calculated g(r) using ab initio methods and find a good agreement with the experiment. Based of the similarity of the measured and calculated structure factors determined density of water under extreme conditions unattainable previously.

Type
Research Article
Copyright
Copyright © Materials Research Society 2007

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Probing of Structure Factor of Water to 57 GPa and 1500 K
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