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Article: Interactions between magnetosonic waves and radiation belt electrons: Comparisons of quasi-linear calculations with test particle simulations

TitleInteractions between magnetosonic waves and radiation belt electrons: Comparisons of quasi-linear calculations with test particle simulations
Authors
Keywordselectron acceleration
magnetosonic
quasi-linear theory
radiation belt
test particle simulation
transit-time
Issue Date2014
Citation
Geophysical Research Letters, 2014, v. 41, n. 14, p. 4828-4834 How to Cite?
AbstractQuasi-linear theory (QLT) has been commonly used to study the Landau resonant interaction between radiation belt electrons and magnetosonic (MS) waves. However, the long-parallel wavelengths of MS waves can exceed their narrow spatial confinement and cause a transit-time effect during interactions with electrons. We perform a careful investigation to validate the applicability of QLT to interactions between MS waves, which have a distribution in frequency and wave normal angle, and radiation belt electrons using test particle simulations. We show agreement between these two methods for scattering rate of intense MS waves at L = 4.5 inside the plasmapause, but find a significant inconsistency for MS waves outside the plasmapause, due to the broad transit-time region in (Ek,α) space. Consequently, we introduce a particle-independent criterion to justify the validity of QLT for MS waves: the wave spatial confinement should be longer than two parallel wavelengths. © 2014. American Geophysical Union. All Rights Reserved.
Persistent Identifierhttp://hdl.handle.net/10722/334363
ISSN
2023 Impact Factor: 4.6
2023 SCImago Journal Rankings: 1.850
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, Jinxing-
dc.contributor.authorNi, Binbin-
dc.contributor.authorXie, Lun-
dc.contributor.authorPu, Zuyin-
dc.contributor.authorBortnik, Jacob-
dc.contributor.authorThorne, Richard M.-
dc.contributor.authorChen, Lunjin-
dc.contributor.authorMa, Qianli-
dc.contributor.authorFu, Suiyan-
dc.contributor.authorZong, Qiugang-
dc.contributor.authorWang, Xiaogang-
dc.contributor.authorXiao, Chijie-
dc.contributor.authorYao, Zhonghua-
dc.contributor.authorGuo, Ruilong-
dc.date.accessioned2023-10-20T06:47:37Z-
dc.date.available2023-10-20T06:47:37Z-
dc.date.issued2014-
dc.identifier.citationGeophysical Research Letters, 2014, v. 41, n. 14, p. 4828-4834-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/334363-
dc.description.abstractQuasi-linear theory (QLT) has been commonly used to study the Landau resonant interaction between radiation belt electrons and magnetosonic (MS) waves. However, the long-parallel wavelengths of MS waves can exceed their narrow spatial confinement and cause a transit-time effect during interactions with electrons. We perform a careful investigation to validate the applicability of QLT to interactions between MS waves, which have a distribution in frequency and wave normal angle, and radiation belt electrons using test particle simulations. We show agreement between these two methods for scattering rate of intense MS waves at L = 4.5 inside the plasmapause, but find a significant inconsistency for MS waves outside the plasmapause, due to the broad transit-time region in (Ek,α) space. Consequently, we introduce a particle-independent criterion to justify the validity of QLT for MS waves: the wave spatial confinement should be longer than two parallel wavelengths. © 2014. American Geophysical Union. All Rights Reserved.-
dc.languageeng-
dc.relation.ispartofGeophysical Research Letters-
dc.subjectelectron acceleration-
dc.subjectmagnetosonic-
dc.subjectquasi-linear theory-
dc.subjectradiation belt-
dc.subjecttest particle simulation-
dc.subjecttransit-time-
dc.titleInteractions between magnetosonic waves and radiation belt electrons: Comparisons of quasi-linear calculations with test particle simulations-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/2014GL060461-
dc.identifier.scopuseid_2-s2.0-84904528132-
dc.identifier.volume41-
dc.identifier.issue14-
dc.identifier.spage4828-
dc.identifier.epage4834-
dc.identifier.eissn1944-8007-
dc.identifier.isiWOS:000340536000004-

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