Hill, D. W., Ridgers, C. P. orcid.org/0000-0002-4078-0887, Kingham, R. J. et al. (1 more author) (2021) Vlasov-Fokker-Planck simulations of pre-magnetized ablating planar targets. Physics of Plasmas. 092708. ISSN 1089-7674
Abstract
Magnetic fields, spontaneously generated around laser heating nonuniformities, have been found to invert and enhance electron pressure perturbations in the conduction zones of laser-produced plasmas without applied magnetic fields. The application of a sufficiently strong magnetic field is predicted to damp this phenomenon, but may instead result in magneto-thermal instability. Two-dimensional Vlasov-Fokker-Planck simulations of the conduction zone of laser-produced plasmas, subject to externally applied magnetic fields of different field strengths, are performed. The effects of non-locality upon extended collisional transport terms and instability thresholds are investigated. It is found that magnetized transport terms Righi-Leduc heat flow and thermoelectric heat flow are strongly enhanced by non-locality (up to twofold), even at the top of the temperature gradient, due to larger magnetization of the mediating hot electrons (relative to their thermal counterparts). Meanwhile, the Nernst effect efficiently advects magnetic field out of the conduction zone before instability (which requires Hall parameters, χ>0.1) can take hold.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Funding Information: D.W.H., C.P.R., and R.J.K. would like to acknowledge funding from the UK Engineering and Physical Sciences research council (Grant No. EP/M011372/1). This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training program 2014–2018 under Grant Agreement No. 633053 (Project Reference CfP-AWP17-IFE-CCFE-01). The views and opinions expressed herein do not necessarily reflect those of the European Commission. Publisher Copyright: © 2021 Author(s). |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Funding Information: | Funder Grant number EPSRC EP/M011372/1 |
Depositing User: | Pure (York) |
Date Deposited: | 02 Feb 2023 12:40 |
Last Modified: | 20 Dec 2024 00:21 |
Published Version: | https://doi.org/10.1063/5.0049685 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1063/5.0049685 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:195990 |