DOI: 10.1002/2014GL061380
论文题名: Fast transport of resonant electrons in phase space due to nonlinear trapping by whistler waves
作者: Artemyev A.V. ; Vasiliev A.A. ; Mourenas D. ; Agapitov O.V. ; Krasnoselskikh V. ; Boscher D. ; Rolland G.
刊名: Geophysical Research Letters
ISSN: 0094-9852
EISSN: 1944-9583
出版年: 2014
卷: 41, 期: 16 起始页码: 5727
结束页码: 5733
语种: 英语
Scopus关键词: Earth (planet)
; Electrons
; Fokker Planck equation
; Nonlinear equations
; Radiation belts
; Velocity control
; Wave power
; Earth's radiation belts
; Inhomogeneous magnetic field
; Nonlinear trapping
; Particle velocity distributions
; Power distributions
; Relativistic electron
; Resonant interaction
; Wave-particle interactions
; Phase space methods
; acceleration
; analytical method
; magnetic field
; nonlinearity
; particle motion
; wave power
英文摘要: We present an analytical, simplified formulation accounting for the fast transport of relativistic electrons in phase space due to wave-particle resonant interactions in the inhomogeneous magnetic field of Earth's radiation belts. We show that the usual description of the evolution of the particle velocity distribution based on the Fokker-Planck equation can be modified to incorporate nonlinear processes of wave-particle interaction, including particle trapping. Such a modification consists in one additional operator describing fast particle jumps in phase space. The proposed, general approach is used to describe the acceleration of relativistic electrons by oblique whistler waves in the radiation belts. We demonstrate that for a wave power distribution with a hard enough power law tail P(B2 w ) α B-η w such that η < 5/2, the efficiency of nonlinear acceleration could be more effective than the conventional quasi-linear acceleration for 100 keV electrons. © 2014. American Geophysical Union. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906298536&doi=10.1002%2f2014GL061380&partnerID=40&md5=b5699b66809269e90822c35187c79ca6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7116
Appears in Collections: 气候减缓与适应
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作者单位: LPC2E/CNRS, University of Orleans, Orleans, France
Recommended Citation:
Artemyev A.V.,Vasiliev A.A.,Mourenas D.,et al. Fast transport of resonant electrons in phase space due to nonlinear trapping by whistler waves[J]. Geophysical Research Letters,2014-01-01,41(16).