Published February 2021
| Version Published
Journal Article
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How Hall electric fields intrinsically chaotize and heat ions during collisionless magnetic reconnection
Abstract
The origin of extreme and anomalous ion heating during magnetic reconnection has been a long-standing mystery. It is shown in this paper that, at the core of the process, the stochastic heating mechanism is responsible for this energization. The in-plane Hall electric fields that intrinsically develop during collisionless reconnection not only accelerate ions but also thermalize them by inducing chaotic motion. The mechanism explains various observed features of ion heating, e.g., its relation to the guide field strength and the ion mass-to-charge ratio.
Additional Information
© 2021 Published under license by AIP Publishing. Submitted: 14 December 2020; Accepted: 31 January 2021; Published Online: 23 February 2021. This paper is part of the Special Collection: Papers from the 62nd Annual Meeting of the APS Division of Plasma Physics. Paper BI1 6, Bull. Am. Phys. Soc. 65 (2020). The authors would like to thank Gunsu S. Yun for useful discussions and suggestions. This material is based upon the work supported by the U.S. Department of Energy Office of Science, Office of Fusion Energy Sciences under Award No. DE-FG02-04ER54755, the Air Force Office of Scientific Research under Award No. FA9550–17-1–0023, and the NSF Solar Terrestrial Research Program via Award Grant No. 1914599. The particle-in-cell computations presented here were conducted on the Caltech High Performance Cluster partially supported by a grant from the Gordon and Betty Moore Foundation. Data Availability: The data that support the findings of this study are available from the corresponding author upon reasonable request.Attached Files
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Additional details
Identifiers
- Eprint ID
- 108169
- Resolver ID
- CaltechAUTHORS:20210224-102724312
Funding
- Department of Energy (DOE)
- DE-FG02-04ER54755
- Air Force Office of Scientific Research (AFOSR)
- FA9550-17-1-0023
- NSF
- AGS-1914599
- Gordon and Betty Moore Foundation
Dates
- Created
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2021-02-24Created from EPrint's datestamp field
- Updated
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2023-10-02Created from EPrint's last_modified field