气候变化领域集成服务门户(CCPortal): Phase Decoherence Within Intense Chorus Wave Packets Constrains the Efficiency of Nonlinear Resonant Electron Acceleration

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DOI	10.1029/2020GL089807
	Phase Decoherence Within Intense Chorus Wave Packets Constrains the Efficiency of Nonlinear Resonant Electron Acceleration
	Zhang X.-J.; Agapitov O.; Artemyev A.V.; Mourenas D.; Angelopoulos V.; Kurth W.S.; Bonnell J.W.; Hospodarsky G.B.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:20
英文摘要	Electron resonant interaction with whistler mode waves is traditionally considered as one of the main drivers of radiation belt dynamics. The two main theoretical concepts available for its description are quasi-linear theory of electron scattering by low-amplitude waves and nonlinear theory of electron resonant trapping and phase bunching by intense waves. Both concepts successfully describe some aspects of wave-particle interactions but predict significantly different timescales of relativistic electron acceleration. In this study, we investigate effects that can reduce the efficiency of nonlinear interactions and bridge the gap between the predictions of these two types of models. We examine the effects of random wave phase and frequency variations observed inside whistler mode wave packets on nonlinear interactions. Our results show that phase coherence and frequency fluctuations should be taken into account to accurately model electron nonlinear resonant acceleration and that, along with wave amplitude modulation, they may reduce acceleration rates to realistic, moderate levels. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Efficiency; Electron scattering; Electrons; Plasma accelerators; Radiation belts; Wave packets; Electron acceleration; Frequency fluctuation; Frequency variation; Nonlinear interactions; Radiation belt dynamics; Relativistic electron; Resonant interaction; Wave-particle interactions; Atmospherics; acceleration; algorithm; detection method; electron; genetic algorithm; model; random wave; scattering
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169567
作者单位	Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA, United States; Space Sciences Laboratory, University of California, Berkeley, CA, United States; CEA, DAM, DIF, Arpajon, France; Laboratoire Matière sous Conditions Extrêmes, Université Paris-Saclay, CEA, Bruyères-le-Châtel, France; Department of Physics and Astronomy, University of Iowa, Iowa City, IA, United States
推荐引用方式 GB/T 7714	Zhang X.-J.,Agapitov O.,Artemyev A.V.,et al. Phase Decoherence Within Intense Chorus Wave Packets Constrains the Efficiency of Nonlinear Resonant Electron Acceleration[J],2020,47(20).
APA	Zhang X.-J..,Agapitov O..,Artemyev A.V..,Mourenas D..,Angelopoulos V..,...&Hospodarsky G.B..(2020).Phase Decoherence Within Intense Chorus Wave Packets Constrains the Efficiency of Nonlinear Resonant Electron Acceleration.Geophysical Research Letters,47(20).
MLA	Zhang X.-J.,et al."Phase Decoherence Within Intense Chorus Wave Packets Constrains the Efficiency of Nonlinear Resonant Electron Acceleration".Geophysical Research Letters 47.20(2020).