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Title: Incorporating kinetic effects on Nernst advection in inertial fusion simulations

Journal Article · · Plasma Physics and Controlled Fusion

We present a simple method to incorporate nonlocal effects on the Nernst advection of magnetic fields down steep temperature gradients, and demonstrate its effectiveness in a number of inertial fusion scenarios. This is based on assuming that the relationship between the Nernst velocity and the heat flow velocity is unaffected by nonlocality. The validity of this assumption is confirmed over a wide range of plasma conditions by comparing Vlasov–Fokker–Planck and flux-limited classical transport simulations. Additionally, we observe that the Righi–Leduc heat flow is more severely affected by nonlocality due to its dependence on high velocity moments of the electron distribution function, but are unable to suggest a reliable method of accounting for this in fluid simulations.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1457203
Alternate ID(s):
OSTI ID: 1497942
Report Number(s):
LLNL-JRNL-756635
Journal Information:
Plasma Physics and Controlled Fusion, Journal Name: Plasma Physics and Controlled Fusion Vol. 60 Journal Issue: 8; ISSN 0741-3335
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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Nernst thermomagnetic waves in magnetized high energy density plasmas journal November 2019

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