Kinetic modeling of Nernst effect in magnetized hohlraums

A. S. Joglekar, C. P. Ridgers, R. J. Kingham, and A. G. R. Thomas
Phys. Rev. E 93, 043206 – Published 22 April 2016

Abstract

We present nanosecond time-scale Vlasov-Fokker-Planck-Maxwell modeling of magnetized plasma transport and dynamics in a hohlraum with an applied external magnetic field, under conditions similar to recent experiments. Self-consistent modeling of the kinetic electron momentum equation allows for a complete treatment of the heat flow equation and Ohm's law, including Nernst advection of magnetic fields. In addition to showing the prevalence of nonlocal behavior, we demonstrate that effects such as anomalous heat flow are induced by inverse bremsstrahlung heating. We show magnetic field amplification up to a factor of 3 from Nernst compression into the hohlraum wall. The magnetic field is also expelled towards the hohlraum axis due to Nernst advection faster than frozen-in flux would suggest. Nonlocality contributes to the heat flow towards the hohlraum axis and results in an augmented Nernst advection mechanism that is included self-consistently through kinetic modeling.

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  • Received 28 August 2015

DOI:https://doi.org/10.1103/PhysRevE.93.043206

©2016 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Plasma Physics

Authors & Affiliations

A. S. Joglekar1,*, C. P. Ridgers2, R. J. Kingham3, and A. G. R. Thomas1,†

  • 1Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA
  • 2York Plasma Institute, Department of Physics, University of York, Heslington, York, YO10 5DD, United Kingdom
  • 3Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom

  • *Present address: Particle-In-Cell and Kinetic Simulation Center, University of California, Los Angeles, Los Angeles, California 90095, USA; archis@ucla.edu
  • agrt@umich.edu

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Issue

Vol. 93, Iss. 4 — April 2016

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