globalchange  > 气候减缓与适应
DOI: 10.1002/2014GL061248
论文题名:
Thermal electron acceleration by localized bursts of electric field in the radiation belts
作者: Artemyev A.V.; Agapitov O.V.; Moze F.; Krasnoselskikh V.
刊名: Geophysical Research Letters
ISSN: 0094-9838
EISSN: 1944-9569
出版年: 2014
卷: 41, 期:16
起始页码: 5734
结束页码: 5739
语种: 英语
Scopus关键词: Acoustic wave propagation ; Acoustics ; Electric fields ; Geomagnetism ; Hot electrons ; Plasma accelerators ; Radiation belts ; Solitons ; Thermionic emission ; Electric field structures ; Electron acceleration ; Electron acoustic waves ; Field localization ; Geomagnetic equator ; Large parallel electric fields ; Outer radiation belt ; Resonant interaction ; Electrons ; acceleration ; acoustic wave ; electric field ; geomagnetic field ; kinetic energy ; nonlinearity ; wave propagation
英文摘要: In this paper we investigate the resonant interaction of thermal ~10-100 eV electrons with a burst of electrostatic field that results in electron acceleration to kilovolt energies. This single burst contains a large parallel electric field of one sign and a much smaller, longer-lasting parallel field of the opposite sign. The Van Allen Probe spacecraft often observes clusters of spatially localized bursts in the Earth's outer radiation belts. These structures propagate mostly away from the geomagnetic equator and share properties of soliton-like nonlinear electron acoustic waves: a velocity of propagation is about the thermal velocity of cold electrons (~3000-10,000 km/s), and a spatial scale of electric field localization along the field lines is about the Debye radius of hot electrons (~5-30 km). We model the nonlinear resonant interaction of these electric field structures and cold background electrons. © 2014. American Geophysical Union.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906530763&doi=10.1002%2f2014GL061248&partnerID=40&md5=f120fe41e6ecc08bf6546ab7186bcf5d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7102
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作者单位: Space Research Institute, RAS, Moscow, Russian Federation

Recommended Citation:
Artemyev A.V.,Agapitov O.V.,Moze F.,et al. Thermal electron acceleration by localized bursts of electric field in the radiation belts[J]. Geophysical Research Letters,2014-01-01,41(16).
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