DOI: 10.1002/2014GL059626
论文题名: Quantifying the radiation belt seed population in the 17 March 2013 electron acceleration event
作者: Boyd A.J. ; Spence H.E. ; Claudepierre S.G. ; Fennell J.F. ; Blake J.B. ; Baker D.N. ; Reeves G.D. ; Turner D.L.
刊名: Geophysical Research Letters
ISSN: 0094-10185
EISSN: 1944-9916
出版年: 2014
卷: 41, 期: 7 起始页码: 2275
结束页码: 2281
语种: 英语
英文关键词: particle acceleration
; phase space density
; radiation belts
; seed population
Scopus关键词: Electrons
; Phase space methods
; Plasma accelerators
; Plasma sheaths
; Acceleration process
; Adiabatic invariants
; Electron acceleration
; Electron population
; Geo-stationary orbits
; Particle acceleration
; Phase space densities
; Relativistic electron
; Radiation belts
; acceleration
; adiabatic process
; electron
; energy
; probe
; quantitative analysis
; radiation balance
英文摘要: We present phase space density (PSD) observations using data from the Magnetic Electron Ion Spectrometer instrument on the Van Allen Probes for the 17 March 2013 electron acceleration event. We confirm previous results and quantify how PSD gradients depend on the first adiabatic invariant. We find a systematic difference between the lower-energy electrons (1-MeV with a source region within the radiation belts. Our observations show that the source process begins with enhancements to the 10s-100s-keV energy seed population, followed by enhancements to the >1-MeV population and eventually leading to enhancements in the multi-MeV electron population these observations provide the clearest evidence to date of the timing and nature of the radial transport of a 100s keV electron seed population into the heart of the outer belt and subsequent local acceleration of those electrons to higher radiation belt energies. Key Points Quantification of phase space density gradients inside geostationary orbit Clear differences between the source of low energy and relativistic electrons Clear observations of how the acceleration process evolves in energy © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899042592&doi=10.1002%2f2014GL059626&partnerID=40&md5=f299eea742cd9ede448d0cd76628cf9b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7449
Appears in Collections: 气候减缓与适应
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作者单位: Institute for the Study of Earth Oceans, and Space, University of New Hampshire, Durham, NH, United States
Recommended Citation:
Boyd A.J.,Spence H.E.,Claudepierre S.G.,et al. Quantifying the radiation belt seed population in the 17 March 2013 electron acceleration event[J]. Geophysical Research Letters,2014-01-01,41(7).