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

Abstract

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.

Authors:
 [1];  [1];  [2];  [2];  [2]
  1. CEA, DAM, DIF, Arpajon (France)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1247682
Alternate Identifier(s):
OSTI ID: 1242329
Report Number(s):
LA-UR-16-21005
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 116; Journal Issue: 11; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Clerouin, Jean, Arnault, Philippe, Ticknor, Christopher, Kress, Joel D., and Collins, Lee A. Unified concept of effective one component plasma for hot dense plasmas. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.116.115003.
Clerouin, Jean, Arnault, Philippe, Ticknor, Christopher, Kress, Joel D., & Collins, Lee A. Unified concept of effective one component plasma for hot dense plasmas. United States. doi:10.1103/PhysRevLett.116.115003.
Clerouin, Jean, Arnault, Philippe, Ticknor, Christopher, Kress, Joel D., and Collins, Lee A. Thu . "Unified concept of effective one component plasma for hot dense plasmas". United States. doi:10.1103/PhysRevLett.116.115003. https://www.osti.gov/servlets/purl/1247682.
@article{osti_1247682,
title = {Unified concept of effective one component plasma for hot dense plasmas},
author = {Clerouin, Jean and Arnault, Philippe and Ticknor, Christopher and Kress, Joel D. and Collins, Lee A.},
abstractNote = {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.},
doi = {10.1103/PhysRevLett.116.115003},
journal = {Physical Review Letters},
number = 11,
volume = 116,
place = {United States},
year = {2016},
month = {3}
}

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