DOI: 10.1063/1.4865252. Melting temperatures of H2O up to 72 GPa measured in a diamond anvil cell using CO2 laser heating technique

Melting temperatures of H2O up to 72 GPa measured in a diamond anvil cell using CO2 laser heating technique

10.1063/1.4865252

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The melting curve of H2O from 49 to 72 GPa was determined by using a laser-heated diamond anvil cell. Double-sided CO2 laser heating technique was employed in order to heat the sample directly. Discontinuous changes of the heating efficiency attributed to the H2O melting were observed between 49 and 72 GPa. The obtained melting temperatures at 49 and 72 GPa are 1200 and 1410 K, respectively. We found that the slope of the melting curve significantly decreases with increasing pressure, only 5 K/GPa at 72 GPa while 44 K/GPa at 49 GPa. Our results suggest that the melting curve does not intersect with the isentropes of Uranus and Neptune, and hence, H2O should remain in the liquid state even at the pressure and temperature conditions found deep within Uranus and Neptune.

Bibliography

Kimura, T., Kuwayama, Y., & Yagi, T. (2014). Melting temperatures of H2O up to 72 GPa measured in a diamond anvil cell using CO2 laser heating technique. The Journal of Chemical Physics, 140(7).

Authors 3

T. Kimura (first)
Y. Kuwayama (additional)
T. Yagi (additional)

References 35 Referenced 31

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Dates

Type	When
Created	11 years, 6 months ago (Feb. 18, 2014, 8:30 p.m.)
Deposited	2 years, 1 month ago (June 25, 2023, 7:39 p.m.)
Indexed	3 weeks, 2 days ago (July 30, 2025, 7:03 a.m.)
Issued	11 years, 6 months ago (Feb. 18, 2014)
Published	11 years, 6 months ago (Feb. 18, 2014)
Published Online	11 years, 6 months ago (Feb. 18, 2014)
Published Print	11 years, 6 months ago (Feb. 21, 2014)

Funders 0

None

BibTeX

@article{Kimura_2014, title={Melting temperatures of H2O up to 72 GPa measured in a diamond anvil cell using CO2 laser heating technique}, volume={140}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.4865252}, DOI={10.1063/1.4865252}, number={7}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Kimura, T. and Kuwayama, Y. and Yagi, T.}, year={2014}, month=feb }

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