Symmetric Set of Transport Coefficients for Collisional Magnetized Plasma

James D. Sadler, Christopher A. Walsh, and Hui Li
Phys. Rev. Lett. 126, 075001 – Published 15 February 2021
PDFHTMLExport Citation

Abstract

Braginskii extended magnetohydrodynamics is used to model transport in collisional astrophysical and high energy density plasmas. We show that commonly used approximations to the α and β transport coefficients [e.g., Epperlein and Haines, Phys. Fluids 29, 1029 (1986)] have a subtle inaccuracy that causes significant artificial magnetic dissipation and discontinuities. This is because magnetic transport actually relies on ββ and αα, rather than α and β themselves. We provide fit functions that rectify this problem and thus resolve the discrepancies with kinetic simulations in the literature. When implemented in the gorgon code, they reduce the predicted density asymmetry amplitude at laser ablation fronts. Recognizing the importance of αα and ββ, we recast the set of coefficients. This makes explicit the symmetry of the magnetic and thermal transport, as well as the symmetry of the coefficients themselves.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 9 September 2020
  • Revised 14 December 2020
  • Accepted 15 January 2021

DOI:https://doi.org/10.1103/PhysRevLett.126.075001

© 2021 American Physical Society

Physics Subject Headings (PhySH)

Fluid DynamicsPlasma Physics

Authors & Affiliations

James D. Sadler1,2, Christopher A. Walsh3, and Hui Li1

  • 1Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • 2Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • 3Lawrence Livermore National Laboratory, Livermore, California 94550, USA

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 126, Iss. 7 — 19 February 2021

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×