DOI: 10.1002/2015GL066324
论文题名: Bounce resonance diffusion coefficients for spatially confined waves
作者: Li X. ; Tao X. ; Lu Q. ; Dai L.
刊名: Geophysical Research Letters
ISSN: 0094-8385
EISSN: 1944-8116
出版年: 2015
卷: 42, 期: 22 起始页码: 9591
结束页码: 9599
语种: 英语
英文关键词: bounce resonance diffusion
; loss and acceleration
; magnetosonic waves
; radiation belt dynamics
; spatially confined waves
Scopus关键词: Radiation belts
; Resonance
; Equatorial regions
; Gyroresonance
; Magnetosonic waves
; Radiation belt dynamics
; Relativistic electron
; Roberts
; Spatial extent
; Diffusion
; diffusion
; electron
; equatorial dynamics
; ion exchange
; particle motion
; radiative transfer
; resonance
; trajectory
; wave modeling
; wave reflection
英文摘要: Theoretical bounce resonance diffusion coefficients from interactions between electrons and spatially confined waves are derived and validated. Roberts and Schulz bounce resonance diffusion coefficients assume waves to be present on the whole bounce trajectory of particles; therefore, they are not directly applicable to waves that have a finite spatial extent. We theoretically derive and numerically validate a new set of bounce resonance diffusion coefficients for spatially confined waves. We apply our analysis to magnetosonic waves, which are confined to equatorial regions, using a previously published magnetosonic wave model. We find that the bounce resonance diffusion coefficients are comparable to the gyroresonance diffusion coefficients. We conclude that bounce resonance diffusion with magnetosonic waves might play an important role in relativistic electron dynamics. Key Points Roberts and Schulz bounce resonance diffusion coefficients are validated with simulations Bounce resonance diffusion coefficients are derived and validated for spatially confined waves Electron bounce resonance with magnetosonic waves is as important as gyroresonance. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956926656&doi=10.1002%2f2015GL066324&partnerID=40&md5=1cbc4f9dc486a3672137b41096cb1c63
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8001
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: CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei, China
Recommended Citation:
Li X.,Tao X.,Lu Q.,et al. Bounce resonance diffusion coefficients for spatially confined waves[J]. Geophysical Research Letters,2015-01-01,42(22).