Electron Energization and Energy Dissipation in Microscale Electromagnetic Environments

Liu, J. and Yao, S. T. and Shi, Q. Q. and Wang, X. G. and Zong, Q. G. and Feng, Y. Y. and Liu, H. and Guo, R. L. and Yao, Z. H. and Rae, I. J. and Degeling, A. W. and Tian, A. M. and Russell, C. T. and Zhang, Y. T. and Wang, Y. X. and Woodham, L. D. and Pu, Z. Y. and Xiao, C. J. and Fu, S. Y. and Giles, B. L. (2020) Electron Energization and Energy Dissipation in Microscale Electromagnetic Environments. The Astrophysical Journal Letters, 899 (2). L31. ISSN 2041-8205

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Abstract

Particle energization and energy dissipation in electromagnetic environments are longstanding topics of intensive research in space, laboratory, and astrophysical plasmas. One challenge is to understand these conversion processes at smaller and smaller spatial/temporal scales. In this Letter, with very high cadence measurements of particle distributions from the Magnetospheric Multiscale spacecraft, we report evidence of evolution of an identified microscale (i.e., electron gyro-scale) magnetic cavity structure and reveal within it a unique energization process that does not adhere to prevailing adiabatic invariance theory. Our finding indicates that this process is largely energy dependent, and can accelerate/decelerate charged particles inside the trapping region during their gyromotion, clearly altering the particle distribution.

Item Type: Article
Subjects: Afro Asian Archive > Physics and Astronomy
Depositing User: Unnamed user with email support@afroasianarchive.com
Date Deposited: 20 May 2023 06:22
Last Modified: 02 Sep 2024 12:52
URI: http://info.stmdigitallibrary.com/id/eprint/804

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