The thermal diffusivity of fluid oxygen in the diamond-anvil cell has been measured from 1 to 12.6 GPa and 25 to 300 °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 ∼6 GPa. Thermal conductivities derived from these measurements do not vary as 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.
REFERENCES
1.
A.
Michels
, J. V.
Sengers
, and L. J. M.
van der Kleindert
, Physica (Amsterdam)
29
, 149
(1963
).2.
3.
D. J.
Stevenson
and E. E.
Salpeter
, Astrophys. J., Suppl.
35
, 221
(1977
).4.
H. K.
Mao
, P. M.
Bell
, J. W.
Shaner
, and D. J.
Steinberg
, J. Appl. Phys.
49
, 3276
(1978
).5.
M. L. V.
Ramires
, C. A.
Nieto de Castro
, Y.
Nagasaka
, A.
Nagashim
, M. J.
Assael
, and W. A.
Wakeham
, J. Phys. Chem. Ref. Data
24
, 1377
(1995
).6.
M. J.
Assael
, E.
Charitidou
, G. P.
Georgiadis
, and W. A.
Wakeham
, Ber. Bunsenges. Phys. Chem.
92
, 627
(1998
).7.
E. H.
Abramson
, L. J.
Slutsky
, M. D.
Harrell
, and J. M.
Brown
, J. Chem. Phys.
110
, 10493
(1999
).8.
W. Wagner, K. M. de Reuck, and S. Angus, Oxygen: International Thermodynamic Tables of the Fluid State 9 (Blackwell Scientific, Oxford, 1987).
9.
L. A. Weber, NASA reference publication Report No. 1011 NBSIR 77-865 (1977).
10.
E. H.
Abramson
, L. J.
Slutsky
, and J. M.
Brown
, J. Chem. Phys.
104
, 5424
(1996
).11.
12.
W. A. Wakeham, in Transport Properties of Fluids, edited by J. Millat, J. H. Dymond, and C. A. Nieto de Castro (Cambridge University Press, Cambridge, 1996), pp. 83–88.
13.
C. Hoheisel, Computer Calculations, in Transport Properties of Fluids, edited by J. Millat, J. H. Dymond, and C. A. Nieto de Castro (Cambridge University Press, Cambridge, 1996), pp. 189–209.
14.
B. J.
Alder
, D. M.
Gass
, and T. E.
Wainwright
, J. Chem. Phys.
53
, 3813
(1970
).15.
16.
K.
Stephan
, R.
Krause
, and A.
Laesecha
, J. Phys. Chem. Ref. Data
16
, 993
(1989
).17.
18.
S. Angus, K. M. de Reuck, and B. Armstrong, International Thermodynamic Tables of the Fluid State-6: Nitrogen (Pergamon, Oxford, 1979).
19.
R. L.
Mills
, D. H.
Liebenberg
, and J. C.
Bronson
, J. Chem. Phys.
63
, 1198
(1975
).20.
S.
Wiryana
, L. J.
Slutsky
, and J. M.
Brown
, Earth Planet. Sci. Lett.
163
, 123
(1998
).
This content is only available via PDF.
© 1999 American Institute of Physics.
1999
American Institute of Physics
You do not currently have access to this content.
