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Title: Unified description of linear screening in dense plasmas

Journal Article · · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
 [1];  [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Electron screening of ions is among the most fundamental properties of plasmas, determining the effective ionic interactions that impact all properties of a plasma. With the development of new experimental facilities that probe high-energy-density physics regimes ranging from warm dense matter to hot dense matter, a unified framework for describing dense plasma screening has become essential. Such a unified framework is presented here based on finite-temperature orbital-free density functional theory, including gradient corrections and exchange-correlation effects. We find a new analytic pair potential for the ion-ion interaction that incorporates moderate electronic coupling, quantum degeneracy, gradient corrections to the free energy, and finite temperatures. This potential can be used in large-scale “classical” molecular dynamics simulations, as well as in simpler theoretical models (e.g., integral equations and Monte Carlo), with no additional computational complexity. The new potential theoretically connects limits of Debye-Hückel–Yukawa, Lindhard, Thomas-Fermi, and Bohmian quantum hydrodynamics descriptions. In conclusion, based on this new potential, we predict ionic static structure factors that can be validated using x-ray Thomson scattering data.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1476869
Alternate ID(s):
OSTI ID: 1180076
Report Number(s):
LLNL-JRNL-663574; PLEEE8; 777847
Journal Information:
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, Vol. 91, Issue 3; ISSN 1539-3755
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 88 works
Citation information provided by
Web of Science

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Cited By (20)

Quantum Hydrodynamics for Plasmas - a Thomas-Fermi Theory Perspective: Quantum Hydrodynamics for Plasmas - a Thomas-Fermi Theory Perspective journal May 2015
Dipole and generalized oscillator strength derived electronic properties of an endohedral hydrogen atom embedded in a Debye-Hückel plasma journal September 2018
A viscous quantum hydrodynamics model based on dynamic density functional theory journal November 2017
Photoionization of hydrogen-like ions in dense quantum plasmas journal June 2017
Photoionization of C 5+ ion in warm dense plasmas journal August 2018
Quantized plasmon excitations of electron gas in potential well journal January 2019
Pseudo-resonance and energy band gaps in plasmonic crystals journal February 2019
Electron and positron scattering on the Friedel potential journal June 2019
Heat capacity and electrical conductivity of plasmon excitations journal July 2019
Quantum hydrodynamics for plasmas— Quo vadis ? journal September 2019
Effect of quantum charge screening on dual plasmon scattering journal November 2019
The Screening Effect in a Fermi Plasma journal April 2018
Kinetic theory derivation of exchange-correlation in quantum plasma hydrodynamics journal February 2019
Nonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electrons journal September 2016
Excess pressure and electric fields in nonideal plasma hydrodynamics journal June 2019
Bump-on-tail instability across coupling and interaction-range regimes journal December 2019
Nonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electrons preprint January 2017
Quantized Plasmon Excitations of Electron Gas in Potential Well text January 2018
Pseudo-Resonance and Energy Band Gap in Plasmonic Crystals text January 2019
Ion friction at small values of the Coulomb logarithm text January 2019

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