TY - GEN
T1 - Tabular equation of state for gold
AU - Boettger, Jonathan C.
AU - Honnell, Kevin G.
AU - Peterson, Jeffrey H.
AU - Greeff, Carl W.
AU - Crockett, Scott D.
PY - 2012
Y1 - 2012
N2 - A new, SESAME-type equation of state (EOS), suitable for use in hydrodynamic calculations, is described for gold. Pressures, internal energies, and Helmholtz free energies are tabulated on a rectangular temperature-and- density grid, spanning densities from 0 - 36 g/cc, temperatures from 0 - 800 eV, and extending up to pressures of 800 GPa. The EOS is constructed using the standard decomposition of the pressure into a static-lattice cold curve, a thermal nuclear contribution, and a thermal electronic contribution. The cold curve is derived from existing diamond-anvil-cell measurements, the thermal nuclear contribution from the Johnson model, and the thermal electronic contribution using Thomas-Fermi-Dirac theory. Predictions of the new EOS (SESAME 2705) for the cold curve, roomtemperature isotherm, principal Hugoniot, thermal expansion, heat capacity, melt line, and vapor pressure compare favorably with experimental data and are superior to the EOS currently available in the SESAME library (SESAME 2700).
AB - A new, SESAME-type equation of state (EOS), suitable for use in hydrodynamic calculations, is described for gold. Pressures, internal energies, and Helmholtz free energies are tabulated on a rectangular temperature-and- density grid, spanning densities from 0 - 36 g/cc, temperatures from 0 - 800 eV, and extending up to pressures of 800 GPa. The EOS is constructed using the standard decomposition of the pressure into a static-lattice cold curve, a thermal nuclear contribution, and a thermal electronic contribution. The cold curve is derived from existing diamond-anvil-cell measurements, the thermal nuclear contribution from the Johnson model, and the thermal electronic contribution using Thomas-Fermi-Dirac theory. Predictions of the new EOS (SESAME 2705) for the cold curve, roomtemperature isotherm, principal Hugoniot, thermal expansion, heat capacity, melt line, and vapor pressure compare favorably with experimental data and are superior to the EOS currently available in the SESAME library (SESAME 2700).
KW - Gold
KW - Hugoniot
KW - diamond anvil cell
KW - equation of state
KW - heat capacity
KW - melt
KW - thermal expansion
UR - http://www.scopus.com/inward/record.url?scp=84861987289&partnerID=8YFLogxK
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U2 - 10.1063/1.3686402
DO - 10.1063/1.3686402
M3 - Conference contribution
AN - SCOPUS:84861987289
SN - 9780735410060
T3 - AIP Conference Proceedings
SP - 812
EP - 815
BT - Shock Compression of Condensed Matter - 2011 - Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
T2 - 17th Biennial Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2011 APS SCCM
Y2 - 26 June 2011 through 1 July 2011
ER -