New Regimes of Hydrogen and Water at High Pressures and Modest Temperatures

Details New Regimes of Hydrogen and Water at High Pressures and Modest Temperatures New Regimes of Hydrogen and Water at High Pressures and Modest Temperatures

Mar 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aps..mar.z1004c&link_type=abstract

American Physical Society, Annual March Meeting, March 20-24, 2000 Minneapolis, MN, abstract #Z1.004

Physics

Scientific paper

Between the conditions of traditional solid state physics and plasma physics, lies a regime of high pressure and density but modest temperatures. In this regime, even the most common and seemingly simple materials such as hydrogen and water take on novel behaviors. Using dynamic high pressure techniques, pressures upwards of several Mbars and several thousand kelvin can be reached in the laboratory. These extreme conditions are comparable to those found within the interiors of giant planets such as Jupiter and Neptune. Under these conditions, hydrogen becomes a metallic fluid. The relative simplicity of hydrogen belies a system where both the rotational and vibration energies are comparable to the thermal energy yet still much smaller than the Fermi energy leading to a complex quantum fluid. In contrast, the addition of oxygen to form water yields an superionic fluid with an all together different nature. The behavior of hydrogen and water at these conditions have important implications on models of the interiors of the giant planets.

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