Weak turbulence and quasilinear diffusion for relativistic wave-particle interactions via a Markov Approach
dc.contributor.author | Allanson, O | |
dc.contributor.author | Elsden, T | |
dc.contributor.author | Watt, C | |
dc.contributor.author | Neukirch, T | |
dc.date.accessioned | 2022-01-14T13:46:46Z | |
dc.date.issued | 2022-01-14 | |
dc.date.updated | 2022-01-14T13:24:21Z | |
dc.description.abstract | We derive weak turbulence and quasilinear models for relativistic charged particle dynamics in pitch-angle and energy space, due to interactions with electromagnetic waves propagating (anti-)parallel to a uniform background magnetic field. We use a Markovian approach that starts from the consideration of single particle motion in a prescribed electromagnetic field. This Markovian approach has a number of benefits, including: 1) the evident self-consistent relationship between a more general weak turbulence theory and the standard resonant diffusion quasilinear theory (as is commonly used in e.g. radiation belt and solar wind modeling); 2) the general nature of the Fokker-Planck equation that can be derived without any prior assumptions regarding its form; 3) the clear dependence of the form of the Fokker-Planck equation and the transport coefficients on given specific timescales. The quasilinear diffusion coefficients that we derive are not new in and of themselves, but this concise derivation and discussion of the weak turbulence and quasilinear theories using the Markovian framework is physically very instructive. The results presented herein form fundamental groundwork for future studies that consider phenomena for which some of the assumptions made in this manuscript may be relaxed. | en_GB |
dc.description.sponsorship | Natural Environment Research Council (NERC) | en_GB |
dc.description.sponsorship | Science and Technology Facilities Council (STFC) | en_GB |
dc.description.sponsorship | Leverhulme Trust | en_GB |
dc.description.sponsorship | University of Exeter | en_GB |
dc.identifier.citation | Vol. 8, article 805699 | en_GB |
dc.identifier.doi | https://doi.org/10.3389/fspas.2021.805699 | |
dc.identifier.grantnumber | NE/V013963/1 | en_GB |
dc.identifier.grantnumber | NE/P017274/1 | en_GB |
dc.identifier.grantnumber | ST/W000369/1 | en_GB |
dc.identifier.grantnumber | ECF-2019-155 | en_GB |
dc.identifier.grantnumber | ST/S000402/1 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/128411 | |
dc.identifier | ORCID: 0000-0003-2353-8586 (Allanson, Oliver) | |
dc.language.iso | en_US | en_GB |
dc.publisher | Frontiers Media | en_GB |
dc.rights | Copyright © 2022 Allanson, Elsden, Watt and Neukirch. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. | en_GB |
dc.subject | space plasma | en_GB |
dc.subject | plasma waves | en_GB |
dc.subject | wave-particle interactions | en_GB |
dc.subject | relativistic | en_GB |
dc.subject | Markov | en_GB |
dc.subject | quasilinear theory | en_GB |
dc.subject | weak turbulence | en_GB |
dc.subject | radiation belts | en_GB |
dc.title | Weak turbulence and quasilinear diffusion for relativistic wave-particle interactions via a Markov Approach | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2022-01-14T13:46:46Z | |
dc.description | This is the final version. Available on open access from Frontiers Media via the DOI in this record. | en_GB |
dc.description | The original contributions presented in the study are included in the article/Supplementary Material, further inquiries can be directed to the corresponding author. | en_GB |
dc.identifier.eissn | 2296-987X | |
dc.identifier.journal | Frontiers in Astronomy and Space Sciences | en_GB |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2021-11-26 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2022-01-14 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2022-01-14T13:41:56Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2022-01-14T13:46:58Z | |
refterms.panel | B | en_GB |
refterms.dateFirstOnline | 2022-01-14 |
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Except where otherwise noted, this item's licence is described as Copyright © 2022 Allanson, Elsden, Watt and Neukirch. This is an open-access
article distributed under the terms of the Creative Commons Attribution License (CC
BY). The use, distribution or reproduction in other forums is permitted, provided the
original author(s) and the copyright owner(s) are credited and that the original
publication in this journal is cited, in accordance with accepted academic practice.
No use, distribution or reproduction is permitted which does not comply with
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