Charged Particle Transport in Magnetic Turbulence

Kuramitsu, Yasuhiro; Hada, Tohru

Contributions to Plasma Physics, 2025

Number of Access:90（2025-10-31 15:13 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/101975

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Title
Charged Particle Transport in Magnetic Turbulence
Creator
NRID
1000070456929 1000070456929
researchmap permalink
yasuhiro_kuramitsu yasuhiro_kuramitsu
Scopus Author ID
24776362200 24776362200
ORCID
0000-0002-0160-2260 0000-0002-0160-2260
CreatorName
Kuramitsu, Yasuhiro
NRID
1000030218490 1000030218490
CreatorName
Hada, Tohru
Subject
magnetohydrodynamics (MHD)
momentum diffusion
particle transport
turbulence
Description
This is the peer reviewed version of the following article: Kuramitsu Y., Hada T.. Charged Particle Transport in Magnetic Turbulence. Contributions to Plasma Physics (2025), which has been published in final form at https://doi.org/10.1002/ctpp.70018. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
Abstract
We discuss charged particle transport in a turbulent magnetic field. The pitch angle diffusion is essential to the transport processes of energetic particles in real and momentum spaces. We integrate particle trajectories in time under the influence of the turbulent magnetic field given as a superposition of parallel-propagating magnetohydrodynamic waves (“slab-turbulence”). As in the standard theory for cosmic ray transports, the small wave amplitude and the random phase approximation are the fundamental assumptions of the quasi-linear theory. In the presence of large amplitude waves, our numerical study shows the anomalous pitch angle diffusion of the energetic particles. In the presence of waves with strong phase correlation, where the MHD turbulence is represented as intermittent wave packets, the particles are transported in the momentum space due to the mirror reflections rather than the pitch angle diffusion. The particle motions are mostly ballistic and occasionally reflected by the intermittent wave packets; thus, the spatial transport of the energetic particles can be super-diffusive in the presence of large amplitude MHD waves with strong phase correlation.
Publisher
John Wiley and Sons Inc
Source Title
Contributions to Plasma Physics
Date of Issued
2025-06-15
Language
English
Handle URL
https://hdl.handle.net/11094/101975
PISSN
08631042
eISSN
15213986
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1002/ctpp.70018
Access Rights
embargoed access
CopyRight
© 2025 Wiley-VCH GmbH.
The full-text file will be made open to the public on 15 June 2026 in accordance with the publisher's policy.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article