DOI: 10.1002/grl.50925
论文题名: Scattering rates of inner belt protons by EMIC waves: A comparison between test particle and diffusion simulations
作者: De Soria-Santacruz M. ; Orlova K.G. ; Martinez-Sanchez M. ; Shprits Y.Y.
刊名: Geophysical Research Letters
ISSN: 0094-8565
EISSN: 1944-8296
出版年: 2013
卷: 40, 期: 18 起始页码: 4793
结束页码: 4797
语种: 英语
英文关键词: EMIC
; inner belt
; wave-particle interactions
Scopus关键词: EMIC
; Frequency band width
; Narrow distribution
; Narrow-band emission
; Quasi-monochromatic
; Quasilinear theory
; Space technologies
; Wave-particle interactions
; Diffusion
; Kinetic theory
; Protons
; diffusion
; electromagnetic method
; fundamental particle
; linearity
; numerical model
; scattering
英文摘要: Inner belt energetic protons are a hindrance to development of space technologies. The emission of electromagnetic ion cyclotron (EMIC) waves from spaceborne transmitters has been proposed as a way to solve this problem. The interaction between particles and narrowband emissions has been typically studied using nonlinear test particle simulations. We show that this formulation results in a random walk of the inner belt protons in velocity space. In this paper we compute bounce-averaged pitch angle diffusion rates from test particle simulations and compare them to those of quasi-linear theory for quasi-monochromatic EMIC waves interacting with inner belt protons. We find that the quasi-linear solution is not sensitive to the frequency bandwidth for narrow distributions. Bounce-averaged diffusion coefficients from both approaches are in good agreement for all energies and pitch angles. The interaction with inner belt protons, therefore, can be addressed using quasi-linear diffusion codes, which allows faster exploration of parameter space. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883866484&doi=10.1002%2fgrl.50925&partnerID=40&md5=f8faeed5cb18e6bfed31d28683c9b1ef
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5829
Appears in Collections: 气候减缓与适应
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作者单位: Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, United States
Recommended Citation:
De Soria-Santacruz M.,Orlova K.G.,Martinez-Sanchez M.,et al. Scattering rates of inner belt protons by EMIC waves: A comparison between test particle and diffusion simulations[J]. Geophysical Research Letters,2013-01-01,40(18).