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Incorporating kinetic effects on Nernst advection in inertial fusion simulations

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Title: Incorporating kinetic effects on Nernst advection in inertial fusion simulations
Authors: Brodrick, JP
Sherlock, M
Farmer, WA
Joglekar, AS
Barrois, R
Wengraf, J
Bissell, JJ
Kingham, RJ
Del Sorbo, D
Read, MP
Ridgers, CP
Item Type: Conference Paper
Abstract: 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.
Issue Date: 1-Aug-2018
Date of Acceptance: 4-Jun-2018
URI: http://hdl.handle.net/10044/1/61442
DOI: https://dx.doi.org/10.1088/1361-6587/aaca0b
ISSN: 0741-3335
Publisher: IOP Publishing
Journal / Book Title: Plasma Physics and Controlled Fusion
Volume: 60
Issue: 8
Copyright Statement: © 2018 University of York. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (https://creativecommons.org/licenses/by/3.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Sponsor/Funder: Engineering & Physical Science Research Council (E
Funder's Grant Number: EP/M01102X/1
Conference Name: 47th Annual Anomalous Absorption Conference
Keywords: Science & Technology
Physical Sciences
Physics, Fluids & Plasmas
Physics
Nernst
transport
nonlocal
LASER-PRODUCED PLASMAS
NONLOCAL ELECTRON-TRANSPORT
FOKKER-PLANCK EQUATION
MAGNETIC-FIELDS
HEAT-TRANSPORT
ION SOUND
MODEL
CODE
0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics
Fluids & Plasmas
Publication Status: Published
Start Date: 2017-06-11
Finish Date: 2017-06-16
Conference Place: University of California, CA, USA
Open Access location: https://doi.org/10.1088/1361-6587/aaca0b
Online Publication Date: 2018-06-26
Appears in Collections:Physics
Plasma Physics