Title: Static and dynamic properties of multi-ionic plasma mixtures

Abstract

Complex plasma mixtures with three or more components are often encountered in astrophysics or in inertial confinement fusion (ICF) experiments. For mixtures containing species with large differences in atomic number Z, the modeling needs to consider at the same time the kinetic theory for low-Z elements combined with the theory of strongly coupled plasma for high-Z elements, as well as all the intermediate situations that can appear in multi-component systems. For such cases, we study the pair distribution functions, self-diffusions, mutual diffusion and viscosity for ternary mixtures at extreme conditions. These quantities can be produced from first principles using orbital free molecular dynamics at the computational expense of very intensive simulations to reach good statistics. Utilizing the first-principles results as reference data, we assess the merit of a global analytic model for transport coefficients, "Pseudo-Ions in Jellium" (PIJ), based on an iso-electronic assumption (iso-n_e). With a multi-component hypernetted-chain integral equation, we verify the quality of the iso-n_e prescription for describing the static structure of the mixtures. This semi-analytical modeling compares well with the simulation results and allows one to consider plasma mixtures not accessible to simulations. Further, applications are given for the mix of materials in ICF experiments. A reductionmore » of a multicomponent mixture to an effective binary mixture is also established in the hydrodynamic limit and compared with PIJ estimations for ICF relevant mixtures.« less

Authors:

Clerouin, Jean  ^[1];

• Search DOE PAGES for author "Clerouin, Jean"
• Search DOE PAGES for ORCID "0000-0003-2144-2759"

Arnault, Philippe ^[2]; Grea, Benoit-Joseph ^[2]; Guisset, Sebastien ^[2]; Vandenboomgaerde, Marc ^[2]; White, Alexander James  ^[3];

• Search DOE PAGES for author "White, Alexander James"
• Search DOE PAGES for ORCID "0000-0002-7771-3899"

Collins, Lee A.  ^[3];

• Search DOE PAGES for author "Collins, Lee A."
• Search DOE PAGES for ORCID "0000-0002-8180-9367"

Kress, Joel David  ^[3];

• Search DOE PAGES for author "Kress, Joel David"
• Search DOE PAGES for ORCID "0000-0002-8769-2104"

Ticknor, Christopher  ^[3]

• Search DOE PAGES for author "Ticknor, Christopher"
• Search DOE PAGES for ORCID "0000-0001-9972-4524"

---

+ Show Author Affiliations

1. Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France); Univ. Paris-Saclay, Bruyeres-le-Chatel (France)
2. Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)
3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Publication Date:

Wed Mar 18 00:00:00 EDT 2020

Research Org.:

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:

USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:

1819151

Alternate Identifier(s):

OSTI ID: 1605315

Report Number(s):

LA-UR-20-20121
Journal ID: ISSN 2470-0045; TRN: US2214073

Grant/Contract Number:  

89233218CNA000001; 89233218NCA000001; P184

Resource Type:

Accepted Manuscript

Journal Name:

Physical Review E

Additional Journal Information:

Journal Volume: 101; Journal Issue: 3; Journal ID: ISSN 2470-0045

Publisher:

American Physical Society (APS)

Country of Publication:

United States

Language:

English

Subject:

70 PLASMA PHYSICS AND FUSION TECHNOLOGY