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Laser-driven shock experiments on precompressed water: Implications for "icy" giant planets

Lee, K.K.M., Benedetti, L.R., Jeanloz, R., Celliers, P.M., Eggert, J.H., Hicks, D.G., Moon, S.J., Mackinnon, A., Da Silva, L.B., Bradley, D.K., Unites, W., Collins, G.W., Henry, E., Koenig, M., Benuzzi-Mounaix, A., Pasley, J. and Neely, D. (2006) Laser-driven shock experiments on precompressed water: Implications for "icy" giant planets. The Journal of Chemical Physics, 125 (1). 014701. ISSN 0021-9606

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Laser-driven shock compression of samples precompressed to 1 GPa produces high-pressure-temperature conditions inducing two significant changes in the optical properties of water: the onset of opacity followed by enhanced reflectivity in the initially transparent water. The onset of reflectivity at infrared wavelengths can be interpreted as a semiconductor<-->electronic conductor transition in water, and is found at pressures above ~130 GPa for single-shocked samples precompressed to 1 GPa. Our results indicate that conductivity in the deep interior of “icy” giant planets is greater than realized previously because of an additional contribution from electrons.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: York RAE Import
Date Deposited: 20 May 2009 15:19
Last Modified: 20 May 2009 15:19
Published Version: http://dx.doi.org/10.1063/1.2207618
Status: Published
Publisher: American Institute of Physics
Identification Number: 10.1063/1.2207618
URI: http://eprints.whiterose.ac.uk/id/eprint/7615

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