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Title: Unified concept of effective one component plasma for hot dense plasmas

Journal Article · · Physical Review Letters
 [1];  [1];  [2];  [2];  [2]
  1. CEA, DAM, DIF, Arpajon (France)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Orbital-free molecular dynamics simulations are used to benchmark two popular models for hot dense plasmas: the one component plasma (OCP) and the Yukawa model. A unified concept emerges where an effective OCP (EOCP) is constructed from the short-range structure of the plasma. An unambiguous ionization and the screening length can be defined and used for a Yukawa system, which reproduces the long-range structure with finite compressibility. Similarly, the dispersion relation of longitudinal waves is consistent with the screened model at vanishing wave number but merges with the OCP at high wave number. Additionally, the EOCP reproduces the overall relaxation time scales of the correlation functions associated with ionic motion. Lastly, in the hot dense regime, this unified concept of EOCP can be fruitfully applied to deduce properties such as the equation of state, ionic transport coefficients, and the ion feature in x-ray Thomson scattering experiments.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1247682
Alternate ID(s):
OSTI ID: 1242329
Report Number(s):
LA-UR-16-21005; PRLTAO
Journal Information:
Physical Review Letters, Vol. 116, Issue 11; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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Cited By (10)

Dynamical structure factor of strongly coupled ions in a dense quantum plasma journal May 2019
Enhancement of nuclear reaction rates in asymmetric binary ionic mixtures journal November 2017
Dynamic electron–ion collisions and nuclear quantum effects in quantum simulation of warm dense matter journal January 2018
Onset of transverse (shear) waves in strongly-coupled Yukawa fluids journal March 2019
Instantaneous shear modulus of Yukawa fluids across coupling regimes journal February 2020
Laser cooling of ions in a neutral plasma journal January 2019
Checking the Salpeter enhancement of nuclear reactions at intermediate coupling in asymmetric mixtures journal January 2019
Enhancement factor of nuclear reactions in partially ionized plasmas and asymmetric mixtures journal February 2019
Dynamical structure factor of strongly coupled ions in a dense quantum plasma text January 2019
Instantaneous shear modulus of Yukawa fluids across coupling regimes text January 2020

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