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.
- Neely, D.
DOIAbstract
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 semiconductorelectronic 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
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