Probing the Interiors of the Ice Giants: Shock Compression of Water to 700 GPa and 3.8 g/cm³

Knudson, M. D.; Desjarlais, M. P.; Lemke, R. W.; Mattsson, T. R.; French, M.; Nettelmann, N.; Redmer, R.

doi:10.1103/PhysRevLett.108.091102

Title: Probing the Interiors of the Ice Giants: Shock Compression of Water to 700 GPa and 3.8 g/cm³

Abstract

Recently, there has been a tremendous increase in the number of identified extrasolar planetary systems. Our understanding of their formation is tied to exoplanet internal structure models, which rely upon equations of state of light elements and compounds such as water. Here, we present shock compression data for water with unprecedented accuracy that show that water equations of state commonly used in planetary modeling significantly overestimate the compressibility at conditions relevant to planetary interiors. Furthermore, we show that its behavior at these conditions, including reflectivity and isentropic response, is well-described by a recent first-principles based equation of state. These findings advocate that this water model be used as the standard for modeling Neptune, Uranus, and “hot Neptune” exoplanets and should improve our understanding of these types of planets.

Authors:: Knudson, M. D.; Desjarlais, M. P.; Lemke, R. W.; Mattsson, T. R.; French, M.; Nettelmann, N.; Redmer, R.

Publication Date:: Mon Feb 27 00:00:00 EST 2012

Sponsoring Org.:: USDOE

OSTI Identifier:: 1099255

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Name: Physical Review Letters Journal Volume: 108 Journal Issue: 9; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Citation Formats


                    Knudson, M. D., Desjarlais, M. P., Lemke, R. W., Mattsson, T. R., French, M., Nettelmann, N., and Redmer, R. Probing the Interiors of the Ice Giants: Shock Compression of Water to 700 GPa and 3.8 g/cm³.  United States: N. p., 2012. 
Web.  doi:10.1103/PhysRevLett.108.091102.

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                    Knudson, M. D., Desjarlais, M. P., Lemke, R. W., Mattsson, T. R., French, M., Nettelmann, N., & Redmer, R. Probing the Interiors of the Ice Giants: Shock Compression of Water to 700 GPa and 3.8 g/cm³.  United States.  https://doi.org/10.1103/PhysRevLett.108.091102

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                    Knudson, M. D., Desjarlais, M. P., Lemke, R. W., Mattsson, T. R., French, M., Nettelmann, N., and Redmer, R. Mon .  
"Probing the Interiors of the Ice Giants: Shock Compression of Water to 700 GPa and 3.8 g/cm³".  United States.  https://doi.org/10.1103/PhysRevLett.108.091102.

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@article{osti_1099255,

  title        = {Probing the Interiors of the Ice Giants: Shock Compression of Water to 700 GPa and 3.8 g/cm³},

  author       = {Knudson, M. D. and Desjarlais, M. P. and Lemke, R. W. and Mattsson, T. R. and French, M. and Nettelmann, N. and Redmer, R.},

  abstractNote = {Recently, there has been a tremendous increase in the number of identified extrasolar planetary systems. Our understanding of their formation is tied to exoplanet internal structure models, which rely upon equations of state of light elements and compounds such as water. Here, we present shock compression data for water with unprecedented accuracy that show that water equations of state commonly used in planetary modeling significantly overestimate the compressibility at conditions relevant to planetary interiors. Furthermore, we show that its behavior at these conditions, including reflectivity and isentropic response, is well-described by a recent first-principles based equation of state. These findings advocate that this water model be used as the standard for modeling Neptune, Uranus, and “hot Neptune” exoplanets and should improve our understanding of these types of planets.},

  doi          = {10.1103/PhysRevLett.108.091102},

  journal      = {Physical Review Letters},

  number       = 9,

  volume       = 108,

  place        = {United States},

  year         = {Mon Feb 27 00:00:00 EST 2012},

  month        = {Mon Feb 27 00:00:00 EST 2012}

}

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Title: Probing the Interiors of the Ice Giants: Shock Compression of Water to 700 GPa and 3.8 g/cm³

Abstract

Citation Formats

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Mass-Radius Relationships for Exoplanets journal, December 2011

Electronic conduction in shock-compressed water journal, August 2004

The phase diagram of water and the magnetic fields of Uranus and Neptune journal, January 2011

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Equation of state and electrical conductivity of water and ammonia shocked to the 100 GPa (1 Mbar) pressure range journal, June 1982

Shock Compression of Quartz to 1.6 TPa: Redefining a Pressure Standard journal, November 2009

Equation of state and phase diagram of water at ultrahigh pressures as in planetary interiors journal, February 2009

Interior structure models of GJ436b journal, November 2010

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Near-absolute Hugoniot measurements in aluminum to 500 GPa using a magnetically accelerated flyer plate technique journal, October 2003

Phase Diagram and Electrical Conductivity of High Energy-Density Water from Density Functional Theory journal, July 2006

Diffusion and electrical conductivity in water at ultrahigh pressures journal, November 2010

Magnetically accelerated, ultrahigh velocity flyer plates for shock wave experiments journal, October 2005

Convective-region geometry as the cause of Uranus' and Neptune's unusual magnetic fields
journal, March 2004

Laser-driven shock experiments on precompressed water: Implications for “icy” giant planets
journal, July 2006

Optical properties of water at high temperature
journal, April 2011

The Interior Structure, Composition, and Evolution of Giant Planets
journal, December 2009

Structure and evolution of super-Earth to super-Jupiter exoplanets: I. Heavy element enrichment in the interior
journal, February 2008

A Study of the Accuracy of Mass-Radius Relationships for Silicate-Rich and Ice-Rich Planets up to 100 Earth Masses
journal, March 2009

Estimating the quantum effects from molecular vibrations of water under high pressures and temperatures
journal, August 2009

Shock-Wave Exploration of the High-Pressure Phases of Carbon
journal, December 2008

Laser interferometer for measuring high velocities of any reflecting surface
journal, November 1972

Dissociation of Liquid Silica at High Pressures and Temperatures
journal, July 2006

THERMAL EVOLUTION AND STRUCTURE MODELS OF THE TRANSITING SUPER-EARTH GJ 1214b
journal, April 2011

Superionic and Metallic States of Water and Ammonia at Giant Planet Conditions
journal, January 1999

Mass-Radius Relationships for Exoplanets
journal, December 2011

Electronic conduction in shock-compressed water
journal, August 2004

The phase diagram of water and the magnetic fields of Uranus and Neptune
journal, January 2011

CHARACTERISTICS OF PLANETARY CANDIDATES OBSERVED BY KEPLER . II. ANALYSIS OF THE FIRST FOUR MONTHS OF DATA
journal, June 2011

Phase transitions under shock-wave loading
journal, July 1977

Equation of state and electrical conductivity of water and ammonia shocked to the 100 GPa (1 Mbar) pressure range
journal, June 1982

Shock Compression of Quartz to 1.6 TPa: Redefining a Pressure Standard
journal, November 2009

Equation of state and phase diagram of water at ultrahigh pressures as in planetary interiors
journal, February 2009

Interior structure models of GJ436b
journal, November 2010

Pulsed-power-driven high energy density physics and inertial confinement fusion research
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Near-absolute Hugoniot measurements in aluminum to 500 GPa using a magnetically accelerated flyer plate technique
journal, October 2003

Phase Diagram and Electrical Conductivity of High Energy-Density Water from Density Functional Theory
journal, July 2006

Diffusion and electrical conductivity in water at ultrahigh pressures
journal, November 2010

Magnetically accelerated, ultrahigh velocity flyer plates for shock wave experiments
journal, October 2005