HR: 17:15h
AN: V32G-06    [PDF]
TI: Laser-driven shock compression on precompressed water: Exploring icy giant interiors
AU: * Lee, K K
EM: leeka@uclink.berkeley.edu
AF: Dept. of Earth $\&$ Planetary Science University of California, Berkeley, 307 McCone Hall, Berkeley, CA 94720-4767 United States
AU: Benedetti, L R
EM: laura-robin.benedetti@cea.fr
AF: Physics Department University of California, Berkeley, 301 Leconte Hall, Berkeley, CA 94720-7300 United States
AU: Benedetti, L R
EM: laura-robin.benedetti@cea.fr
AF: DPTA, Commissariat a l'Energie Atomique, Bruyeres-le-Chatel, 91680 France
AU: Jeanloz, R
EM: jeanloz@uclink.berkeley.edu
AF: Dept. of Earth $\&$ Planetary Science University of California, Berkeley, 307 McCone Hall, Berkeley, CA 94720-4767 United States
AU: Dewaele, A
EM: agnes.dewaele@cea.fr
AF: DPTA, Commissariat a l'Energie Atomique, Bruyeres-le-Chatel, 91680 France
AU: Occelli, F
EM: florent.occelli@cea.fr
AF: DPTA, Commissariat a l'Energie Atomique, Bruyeres-le-Chatel, 91680 France
AU: Loubeyre, P
EM: paul.loubeyre@cea.fr
AF: DPTA, Commissariat a l'Energie Atomique, Bruyeres-le-Chatel, 91680 France
AU: Hicks, D
EM: hicks13@llnl.gov
AF: Physics and Advanced Technologies Directorate Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550-9234 United States
AU: Eggert, J H
EM: eggert1@llnl.gov
AF: Physics and Advanced Technologies Directorate Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550-9234 United States
AU: Celliers, P M
EM: celliers1@llnl.gov
AF: Physics and Advanced Technologies Directorate Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550-9234 United States
AU: Mackinnon, A
EM: mackinnon2@llnl.gov
AF: Physics and Advanced Technologies Directorate Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550-9234 United States
AU: Moon, S J
EM: moon1@llnl.gov
AF: Physics and Advanced Technologies Directorate Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550-9234 United States
AU: Collins, G W
EM: collins7@llnl.gov
AF: Physics and Advanced Technologies Directorate Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550-9234 United States
AU: Henry, E
EM: henry@castore.mib.infn.it
AF: Dipartimento di Fisica and INFM, Universit… di Milano-Bicocca, P.za della Scienza 3, Milano, 20126 Italy
AU: Henry, E
EM: henry@castore.mib.infn.it
AF: Laboratoire LULI, Ecole Polytechnique, Palaiseau Cedex, 91128 France
AU: Benuzzi-Mounaix, A
AF: Laboratoire LULI, Ecole Polytechnique, Palaiseau Cedex, 91128 France
AU: Koenig, M
AF: Laboratoire LULI, Ecole Polytechnique, Palaiseau Cedex, 91128 France
AU: Pasley, J
AF: Blackett Laboratory Imperial College of Science, Technology and Medicine, Prince Consort Road, London, SW7 2BZ United Kingdom
AB: Although the giant gas planets are comprised of mostly hydrogen and helium, the icy giants Neptune and Uranus are believed to be composed of $\sim$50$%$ water (by mass), as well as significant amounts of methane and ammonia (Hubbard, 1984). Most of the water is in an ultra-condensed, high-temperature state forming an "icy" interior layer with pressures ranging between 10 and 500 GPa and temperatures between 2000 and 5000 K (Hubbard, 1997). It is theorized that it is in this hot, dense layer that the planet's magnetic field is produced. To explore the physical properties of water at the extreme conditions of this icy interior layer, we performed laser-driven shock experiments on precompressed samples accessing thermodynamic conditions unreachable by either static or single-shock compression techniques alone. Recent experiments using Rutherford Appleton Laboratory's Vulcan Laser achieved final pressures up to $\sim$200 GPa and temperatures up to 5,000 K in water samples precompressed in a diamond cell to $\sim$1 GPa, thereby validating this new technique.
DE: 3924 High-pressure behavior
DE: 3944 Shock wave experiments
DE: 5709 Composition
DE: 5724 Interiors (8147)
DE: 5754 Physical properties of materials
SC: Volcanology, Geochemistry, Petrology [V]
MN: 2003 Fall Meeting