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:
-
- CEA, DAM, DIF, Arpajon (France)
- 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. https://doi.org/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. https://doi.org/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 = {Thu Mar 17 00:00:00 EDT 2016},
month = {Thu Mar 17 00:00:00 EDT 2016}
}
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