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Title: Equation of state and shock compression of warm dense sodium—A first-principles study

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4976559· OSTI ID:1418956

As one of the simple alkali metals, sodium has been of fundamental interest for shock physics experiments, but knowledge of its equation of state (EOS) in hot, dense regimes is not well known. By combining path integral Monte Carlo (PIMC) results for partially ionized states at high temperatures and density functional theory molecular dynamics (DFT-MD) results at lower temperatures, we have constructed a coherent equation of state for sodium over a wide density-temperature range of 1.93-11.60 g/cm3 and 103–1.29×108 K. We find that a localized, Hartree-Fock nodal structure in PIMC yields pressures and internal energies that are consistent with DFT-MD at intermediate temperatures of 2×106 K. Since PIMC and DFT-MD provide a first-principles treatment of electron shell and excitation effects, we are able to identify two compression maxima in the shock Hugoniot curve corresponding to K-shell and L-shell ionization. Our Hugoniot curves provide a benchmark for widely used EOS models: SESAME, LEOS, and Purgatorio. Due to the low ambient density, sodium has an unusually high first compression maximum along the shock Hugoniot curve. At beyond 107 K, we show that the radiation effect leads to very high compression along the Hugoniot curve, surpassing relativistic corrections, and observe an increasing deviation of the shock and particle velocities from a linear relation. Here, we also compute the temperature-density dependence of thermal and pressure ionization processes.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344; SC0010517; SC0016248
OSTI ID:
1418956
Alternate ID(s):
OSTI ID: 1361781
Report Number(s):
LLNL-JRNL-736349; JCPSA6; TRN: US1801318
Journal Information:
Journal of Chemical Physics, Vol. 146, Issue 7; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

References (76)

Characterization of the State of Hydrogen at High Temperature and Density journal January 1999
First-principles equation of state and electronic properties of warm dense oxygen journal October 2015
Equation of State for Sodium Metal journal February 1968
Importance of finite-temperature exchange correlation for warm dense matter calculations journal June 2016
First Principles Calculations of Shock Compressed Fluid Helium journal October 2006
Equations of state for two alkali metals at high temperatures journal February 2008
Path integral Monte Carlo simulation of the low-density hydrogen plasma journal May 2001
Electronic and structural transitions in dense liquid sodium journal September 2007
Extended application of Kohn-Sham first-principles molecular dynamics method with plane wave approximation at high energy—From cold materials to hot dense plasmas journal April 2016
Calculation of a Deuterium Double Shock Hugoniot from Ab Initio Simulations journal December 2001
Plastic ablator and hydrodynamic instabilities: A first-principles set of microscopic coefficients journal August 2012
Computer simulation of liquid metals journal December 2013
Application of the embedded atom model to liquid metals: Liquid sodium journal August 2009
Multiphase equation of state for carbon addressing high pressures and temperatures journal June 2014
Path Integral Monte Carlo Calculation of the Deuterium Hugoniot journal August 2000
Computation of the high temperature Coulomb density matrix in periodic boundary conditions journal July 2016
Ab initio analysis of plasmon dispersion in sodium under pressure journal February 2014
Hugoniot Equation of State of Alkali Metals journal December 1966
Path integral Monte Carlo simulations of warm dense sodium journal December 2016
High-Pressure Electrides: The Chemical Nature of Interstitial Quasiatoms journal March 2015
P , V , E , T Equation of State of Metallic Sodium in the Classical Region of Temperature journal June 1967
Transparent dense sodium journal March 2009
Dense Plasma Effects on Nuclear Reaction Rates journal January 2004
Dynamic compression of dense oxide (Gd3Ga5O12) from 0.4 to 2.6 TPa: Universal Hugoniot of fluid metals journal May 2016
Extension of liquid-metal theory to dense partially ionized plasmas journal April 1980
What Do We (Not) Know Theoretically about Solar Neutrino Fluxes? journal March 2004
Purgatorio—a new implementation of the Inferno algorithm journal May 2006
A new quotidian equation of state (QEOS) for hot dense matter journal January 1988
Microscopic Origins of the Anomalous Melting Behavior of Sodium under High Pressure journal March 2012
Pressure-volume relations for the alkali metals from shock-wave measurements journal March 1965
A new global equation of state model for hot, dense matter journal September 1995
Electronic dynamics and plasmons of sodium under compression journal December 2011
Hydrogen–Helium Mixtures at High Pressure journal June 2005
Anomalous optical and electronic properties of dense sodium journal April 2009
All-Electron Path Integral Monte Carlo Simulations of Warm Dense Matter: Application to Water and Carbon Plasmas journal March 2012
Self-interaction correction to density-functional approximations for many-electron systems journal May 1981
Sodium under pressure: bcc to fcc structural transition and pressure-volume relation to 100 GPa journal May 2002
Lattice dynamics and the phase diagram of sodium at high pressures and temperatures from ab initio calculations journal July 2011
Equation of State of the Hydrogen Plasma by Path Integral Monte Carlo Simulation journal October 1994
Implementation of micro-ball nanodiamond anvils for high-pressure studies above 6 Mbar journal January 2012
Effects of Inner-Core 2 p States on Melting Curve and Structure of Dense Sodium at High Pressures journal June 2008
Equilibrium contact probabilities in dense plasmas journal April 2005
Melting of sodium under high pressure. An ab-initio study
  • González, D. J.; González, L. E.
  • PROCEEDINGS FOR THE XV LIQUID AND AMORPHOUS METALS (LAM-15) INTERNATIONAL CONFERENCE, AIP Conference Proceedings https://doi.org/10.1063/1.4928259
conference January 2015
Plasmons in Sodium under Pressure: Increasing Departure from Nearly Free-Electron Behavior journal August 2011
Comment on ``Hugoniot Equation of State of Alkali Metals'' journal September 1967
Exotic high pressure behavior of light alkali metals, lithium and sodium journal April 2011
Simulations of dense atomic hydrogen in the Wigner crystal phase journal September 2006
Equation of state of sodium journal March 1984
Structure of sodium above 100 GPa by single-crystal x-ray diffraction journal October 2007
Impact compression of alkali metals: Computer-aided simulation journal September 2013
Development of Path Integral Monte Carlo Simulations with Localized Nodal Surfaces for Second-Row Elements journal October 2015
Fast and Accurate Quantum Molecular Dynamics of Dense Plasmas Across Temperature Regimes journal October 2014
Gigabar material properties experiments on nif and omega
  • Swift, Damian; Hawreliak, James; Braun, David
  • SHOCK COMPRESSION OF CONDENSED MATTER - 2011: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, AIP Conference Proceedings https://doi.org/10.1063/1.3686321
conference January 2012
Structural Diversity of Sodium journal May 2008
Shock Hugoniot measurements of CH at Gbar pressures at the NIF journal March 2016
High-temperature resistivity of shocked liquid sodium at pressures up to 230 GPa journal March 2011
Theoretical high-pressure equations of state and phase diagrams of the alkali metals journal January 1984
First-principles prediction of the softening of the silicon shock Hugoniot curve journal September 2016
First-principles equation of state calculations of warm dense nitrogen journal February 2016
Fermion nodes journal June 1991
Electronic and Structural Transitions in Dense Liquid Sodium. journal December 2007
Theoretical high-pressure equations of state and phase diagrams of the alkali metals journal January 1984
On the Constitution of Metallic Sodium book January 1997
Microscopic Origins of the Anomalous Melting Behavior of Sodium under High Pressure text January 2012
On the Constitution of Sodium at Higher Densities text January 2001
Transparent dense sodium text January 2009
Plasmons in Sodium under Pressure: Increasing Departure from Nearly-Free-Electron Behavior text January 2011
Ab-initio analysis of plasmon dispersion in sodium under pressure text January 2013
Metallic Icosahedron Phase of Sodium at Terapascal Pressures text January 2015
Development of Path Integral Monte Carlo Simulations with Localized Nodal Surfaces for Second-Row Elements text January 2015
The importance of finite-temperature exchange-correlation for warm dense matter calculations text January 2016
First-Principles Equation of State and Electronic Properties of Warm Dense Oxygen text January 2016
What do we (not) know theoretically about solar neutrino fluxes? text January 2004
Calculation of a Deuterium Double Shock Hugoniot from Ab initio Simulations text January 2001
Simulations of Dense Atomic Hydrogen in the Wigner Crystal Phase text January 2005
First Principles Calculations of Shock Compressed Fluid Helium text January 2006

Cited By (5)

Path integral Monte Carlo simulations of dense carbon-hydrogen plasmas journal March 2018
Magnesium oxide at extreme temperatures and pressures studied with first-principles simulations journal December 2019
Equation of state of boron nitride combining computation, modeling, and experiment journal April 2019
Nonempirical Semi-local Free-Energy Density Functional for Matter Under Extreme Conditions text January 2016
First-Principles Simulations of Warm Dense Lithium Fluoride text January 2017

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