NSSC OpenIR  > 空间科学部
Electrostatic Spacecraft Potential Structure and Wake Formation Effects for Characterization of Cold Ion Beams in the Earth's Magnetosphere
Toledo-Redondo, S.; Lavraud, B.; Fuselier, S. A.; Andre, M.; Khotyaintsev, Yu, V; Nakamura, R.; Escoubet, C. P.; Li, W. Y.; Torkar, K.; Cipriani, F.; Barrie, A. C.; Giles, B.; Moore, T. E.; Gershman, D.; Lindqvist, P-A; Ergun, R. E.; Russell, C. T.; Burch, J. L.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2019
DOI10.1029/2019JA027145
ISSN2169-9380
Language英语
KeywordCold ions spacecraft charging magnetosphere electric field measurements
AbstractCold plasma (up to few tens of electron volts) of ionospheric origin is present most of the time, in most of the regions of the Earth's magnetosphere. However, characterizing it using in situ measurements is difficult, owing to spacecraft electrostatic charging, as often this charging is at levels comparable to or even higher than the equivalent energy of the cold plasma. To overcome this difficulty, active potential control devices are usually placed on spacecraft that artificially reduce spacecraft charging. The electrostatic potential structure around the spacecraft is often assumed to be spherically symmetric, and corrections are applied to the measured particle distribution functions. In this work, we show that large deviations from the spherical model are present, owing to the presence of long electric field booms. We show examples using Magnetospheric MultiScale spacecraft measurements of the electrostatic potential structure and its effect on the measurement of cold ion beams. Overall, we find that particle detectors underestimate the cold ion density under certain conditions, even when their bulk kinetic energy exceeds the equivalent spacecraft potential energy and the ion beam reaches the spacecraft. Active potential control helps in reducing this unwanted effect, but we show one event with large cold ion density (similar to 10 cm(-3)) where particle detectors provide density estimates a factor of 3-5 below the density estimated from the plasma frequency. Understanding these wake effects indirectly constrains some properties of the magnetospheric cold ion component, such as their drift energy, direction, and temperature.
Indexed BySCI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7263
Collection空间科学部
Recommended Citation
GB/T 7714
Toledo-Redondo, S.,Lavraud, B.,Fuselier, S. A.,et al. Electrostatic Spacecraft Potential Structure and Wake Formation Effects for Characterization of Cold Ion Beams in the Earth's Magnetosphere[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2019.
APA Toledo-Redondo, S..,Lavraud, B..,Fuselier, S. A..,Andre, M..,Khotyaintsev, Yu, V.,...&Burch, J. L..(2019).Electrostatic Spacecraft Potential Structure and Wake Formation Effects for Characterization of Cold Ion Beams in the Earth's Magnetosphere.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS.
MLA Toledo-Redondo, S.,et al."Electrostatic Spacecraft Potential Structure and Wake Formation Effects for Characterization of Cold Ion Beams in the Earth's Magnetosphere".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2019).
Files in This Item:
File Name/Size DocType Version Access License
2019JA027145.pdf(13244KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Toledo-Redondo, S.]'s Articles
[Lavraud, B.]'s Articles
[Fuselier, S. A.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Toledo-Redondo, S.]'s Articles
[Lavraud, B.]'s Articles
[Fuselier, S. A.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Toledo-Redondo, S.]'s Articles
[Lavraud, B.]'s Articles
[Fuselier, S. A.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.