Kinetic modeling of Nernst effect in magnetized hohlraums

Joglekar, A. S. and Ridgers, C. P. and Kingham, R. J. and Thomas, A. G. R. (2016) Kinetic modeling of Nernst effect in magnetized hohlraums. Physical Review E, 93 (4). ISSN 2470-0045

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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.

Item Type: Journal Article
Journal or Publication Title: Physical Review E
Additional Information: © 2016 American Physical Society
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 82696
Deposited By: ep_importer_pure
Deposited On: 20 Jun 2017 10:30
Refereed?: Yes
Published?: Published
Last Modified: 21 Oct 2019 00:52
URI: https://eprints.lancs.ac.uk/id/eprint/82696

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