Thermal diffusivity of fluid oxygen to 12 GPa and 300[degree]C

Journal Article · Mon Nov 01 04:00:00 EST 1999 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.479849· OSTI ID:6060686

Abramson, E H; Slutsky, L J ^[1]; Brown, J M ^[2]

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1. Department of Chemistry, University of Washington, Seattle, Washington 98195 (United States)
2. Geophysics Program, University of Washington, Seattle, Washington 98195 (United States)

The thermal diffusivity of fluid oxygen in the diamond-anvil cell has been measured from 1 to 12.6 GPa and 25 to 300 hthinsp;[degree]C. These constitute the first experimental measurements of thermal transport properties of simple fluids above 1 GPa. Diffusivities are found to rise sharply from a minimum at intermediate pressures and then to level off at [approximately]6 GPa. Thermal conductivities derived from these measurements do not vary as [radical]T, rather the excess conductivities are approximately independent of temperature. The diffusivities of nitrogen, previously measured to 1 GPa, closely match those of oxygen when scaled as suggested by a simple, corresponding states theory. [copyright] [ital 1999 American Institute of Physics.]

• OSTI ID: 6060686
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Vol. 111:20; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ELEMENTS
FLUIDS
LIQUEFIED GASES
LIQUIDS
NONMETALS
OXYGEN
PHYSICAL PROPERTIES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
THERMAL CONDUCTIVITY
THERMAL DIFFUSIVITY
THERMODYNAMIC PROPERTIES
VERY HIGH PRESSURE