DOI: 10.1002/2015GL067126
论文题名: Resonant excitation of whistler waves by a helical electron beam
作者: An X. ; Van Compernolle B. ; Bortnik J. ; Thorne R.M. ; Chen L. ; Li W.
刊名: Geophysical Research Letters
ISSN: 0094-9252
EISSN: 1944-8983
出版年: 2016
卷: 43, 期: 6 起始页码: 2413
结束页码: 2421
语种: 英语
英文关键词: electron beam
; wave excitation
; whistler wave
Scopus关键词: Cyclotron resonance
; Cyclotrons
; Earth atmosphere
; Electron beams
; Magnetosphere
; Radiation belts
; Resonance
; Generation process
; Helical electron beams
; Inner magnetosphere
; Radiation belt dynamics
; Resonant excitation
; Wave excitation
; Whistler waves
; Whistler-mode waves
; Atmospherics
; electromagnetic wave
; electron
; experimental study
; growth determination
; ionosphere
; magnetosphere
; resonance
; waveform analysis
英文摘要: Chorus-like whistler mode waves that are known to play a fundamental role in driving radiation belt dynamics are excited on the Large Plasma Device by the injection of a helical electron beam into a cold plasma. The mode structure of the excited whistler wave is identified using a phase correlation technique showing that the waves are excited through a combination of Landau resonance, cyclotron resonance, and anomalous cyclotron resonance. The dominant wave mode excited through cyclotron resonance is quasi-parallel propagating, whereas wave modes excited through Landau resonance and anomalous cyclotron resonance propagate at oblique angles that are close to the resonance cone. An analysis of the linear wave growth rates captures the major observations in the experiment. The results have important implications for the generation process of whistler waves in the Earth's inner magnetosphere. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979468255&doi=10.1002%2f2015GL067126&partnerID=40&md5=a03c8603db5c4b6f38eae3246ce3330a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10215
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States
Recommended Citation:
An X.,Van Compernolle B.,Bortnik J.,et al. Resonant excitation of whistler waves by a helical electron beam[J]. Geophysical Research Letters,2016-01-01,43(6).