Equation-of-state, sound speed, and reshock of shock-compressed fluid carbon dioxide

Mechanical equation-of-state data of initially liquid and solid CO2 shock-compressed to terapascal conditions are reported. Diamond-sapphire anvil cells were used to vary the initial density and state of CO2 samples that were then further compressed with laser-driven shock waves, resulting in a data set from which precise derivative quantities, including Gruneisen parameter and sound speed, are determined. Reshock states are measured to 800 GPa and map the same pressure-density conditions as the single shock using different thermodynamic paths. The compressibility data reported here do not support current density-functional-theory calculations, but are better represented by tabular equation-of-state models.

[1]  Gilbert W. Collins,et al.  Equation of State of CO_{2} Shock Compressed to 1 TPa. , 2020, Physical review letters.

[2]  D. Young,et al.  Equation of state for a chemically dissociative, polyatomic system: Carbon dioxide. , 2019, The Journal of chemical physics.

[3]  M. Mezouar,et al.  Crystalline polymeric carbon dioxide stable at megabar pressures , 2018, Nature Communications.

[4]  Gilbert W. Collins,et al.  Experimental evidence for superionic water ice using shock compression , 2018 .

[5]  M. Desjarlais,et al.  Extension of the Hugoniot and analytical release model of α-quartz to 0.2–3 TPa , 2017 .

[6]  Gilbert W. Collins,et al.  Analysis of laser shock experiments on precompressed samples using a quartz reference and application to warm dense hydrogen and helium , 2015, 1510.03301.

[7]  M. Desjarlais,et al.  Adiabatic release measurements inα-quartz between 300 and 1200 GPa: Characterization ofα-quartz as a shock standard in the multimegabar regime , 2013 .

[8]  Gilbert W. Collins,et al.  Absolute calibration of the OMEGA streaked optical pyrometer for temperature measurements of compressed materials. , 2013, The Review of scientific instruments.

[9]  K. Cochrane,et al.  Carbon dioxide shock and reshock equation of state data to 8 Mbar: Experiments and simulations , 2013 .

[10]  C. Yoo.  Physical and chemical transformations of highly compressed carbon dioxide at bond energies. , 2013, Physical chemistry chemical physics : PCCP.

[11]  Raymond Jeanloz,et al.  Extended data set for the equation of state of warm dense hydrogen isotopes , 2012 .

[12]  S. Bonev,et al.  Stability of dense liquid carbon dioxide , 2012, Proceedings of the National Academy of Sciences.

[13]  R. Hemley,et al.  Crossover from melting to dissociation of CO2 under pressure: Implications for the lower mantle , 2011 .

[14]  E. Schwegler,et al.  Structural and optical properties of liquid CO2 for pressures up to 1 TPa. , 2011, The Journal of chemical physics.

[15]  F. Gorelli,et al.  Equation of state and anharmonicity of carbon dioxide phase I up to 12 GPa and 800 K. , 2010, The Journal of chemical physics.

[16]  Gilbert W. Collins,et al.  Insulator-to-conducting transition in dense fluid helium. , 2010, Physical review letters.

[17]  Gilbert W. Collins,et al.  Hugoniot data for helium in the ionization regime. , 2008, Physical review letters.

[18]  A Melchior,et al.  Streaked optical pyrometer system for laser-driven shock-wave experiments on OMEGA. , 2007, The Review of scientific instruments.

[19]  V. Giordano,et al.  Melting curve and fluid equation of state of carbon dioxide at high pressure and high temperature. , 2006, The Journal of chemical physics.

[20]  Gilbert W. Collins,et al.  Dissociation of liquid silica at high pressures and temperatures. , 2006, Physical review letters.

[21]  David K. Bradley,et al.  Line-imaging velocimeter for shock diagnostics at the OMEGA laser facility , 2004 .

[22]  Gilbert W. Collins,et al.  Coupling static and dynamic compressions: first measurements in dense hydrogen , 2004 .

[23]  W. Wagner,et al.  A New Equation of State for Carbon Dioxide Covering the Fluid Region from the Triple‐Point Temperature to 1100 K at Pressures up to 800 MPa , 1996 .

[24]  Kenneth S. Pitzer,et al.  An equation of state for carbon dioxide valid from zero to extreme pressures , 1994 .

[25]  Sasaki,et al.  Acoustic velocities, refractive index, and elastic constants of liquid and solid CO2 at high pressures up to 6 GPa. , 1993, Physical review. B, Condensed matter.

[26]  W. Nellis,et al.  Equation of state of shock‐compressed liquids: Carbon dioxide and air , 1991 .

[27]  G. L. Schott.  Shock-compressed carbon dioxide: Liquid measurements and comparisons with selected models , 1991 .

[28]  Stanley Block,et al.  Calibration of the pressure dependence of the R1 ruby fluorescence line to 195 kbar , 1975 .

[29]  J. N. Fritz,et al.  Hugoniot equation of state of twelve rocks , 1967 .

[30]  Dr. Frédéric Datchi,et al.  X-ray crystallography of simple molecular solids up to megabar pressures: application to solid oxygen and carbon dioxide , 2014 .

[31]  Samuel A. Letzring,et al.  Initial performance results of the OMEGA laser system , 1997 .

[32]  J. Ancsin.  Development of Cryogenic Sealed Cells as Temperature Standards: Their Filling System and the Purification of CO2 , 1992 .