DOI: 10.1002/2014GL062874
论文题名: Van Allen Probes show that the inner radiation zone contains no MeV electrons: ECT/MagEIS data
作者: Fennell J.F. ; Claudepierre S.G. ; Blake J.B. ; O'Brien T.P. ; Clemmons J.H. ; Baker D.N. ; Spence H.E. ; Reeves G.D.
刊名: Geophysical Research Letters
ISSN: 0094-8912
EISSN: 1944-8643
出版年: 2015
卷: 42, 期: 5 起始页码: 1283
结束页码: 1289
语种: 英语
英文关键词: inner magnetosphere
; inner radiation belt
; inner zone
; trapped electrons
; Van Allen Probes
Scopus关键词: Magnetosphere
; Phase space methods
; Probes
; Radiation belts
; Energetic particles
; Inner magnetosphere
; Inner radiation belts
; Phase space densities
; Radial profiles
; Radiation belt model
; Radiation zones
; Trapped electrons
; Electrons
; atmospheric electricity
; electron density
; inner core
; magnetosphere
; probe
; radiation budget
英文摘要: We present Van Allen Probe observations of electrons in the inner radiation zone. The measurements were made by the Energetic Particle, Composition, and Thermal Plasma/Magnetic Electron Ion Spectrometer (MagEIS) sensors that were designed to measure electrons with the ability to remove unwanted signals from penetrating protons, providing clean measurements. No electrons >900 keV were observed with equatorial fluxes above background (i.e., >0.1 el/(cm2 s sr keV)) in the inner zone. The observed fluxes are compared to the AE9 model and CRRES observations. Electron fluxes <200 keV exceeded the AE9 model 50% fluxes and were lower than the higher-energy model fluxes. Phase space density radial profiles for 1.3 ≤ L∗< 2.5 had mostly positive gradients except near L∗~2.1, where the profiles for μ = 20-30 MeV/G were flat or slightly peaked. The major result is that MagEIS data do not show the presence of significant fluxes of MeV electrons in the inner zone while current radiation belt models and previous publications do. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925865902&doi=10.1002%2f2014GL062874&partnerID=40&md5=e582fa8749098838744ff3290424f6fd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8528
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: Space Science Applications Laboratory, Aerospace Corporation, El Segundo, CA, United States
Recommended Citation:
Fennell J.F.,Claudepierre S.G.,Blake J.B.,et al. Van Allen Probes show that the inner radiation zone contains no MeV electrons: ECT/MagEIS data[J]. Geophysical Research Letters,2015-01-01,42(5).