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Fine structure of low-energy H+ in the nightside auroral region


Metadata FieldValueLanguage
dc.creatorLiu, Chao
dc.creatorPerez, J.D.
dc.creatorMoore, T.E.
dc.creatorChappell, C.R.
dc.creatorSlavin, J.A.
dc.date.accessioned2022-10-12T18:51:47Z
dc.date.available2022-10-12T18:51:47Z
dc.date.created1994
dc.identifier10.1029/93JA01989en_US
dc.identifier.urihttps://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/93JA01989en_US
dc.identifier.urihttps://aurora.auburn.edu/handle/11200/50393
dc.identifier.urihttp://dx.doi.org/10.35099/aurora-461
dc.description.abstractLow-energy H+ data with 6-s resolution from the retarding ion mass spectrometer instrument on DE 1 have been analyzed to reveal the fine structure at middle altitudes of the nightside auroral region. A new method for deconvolving the energy-integrated count rate in the spin plane of the satellite has been used to derive the two-dimensional phase space density. A detailed analysis reveals an alternating conic-beam-conic pattern with the observed conics correlated with large earthward currents in the auroral region. The strong downward current (>1 µA/m2 (equivalent value at ionosphere)) provides a free energy source for the perpendicular ion heating, that generates the ion conics with energies from several eV to tens of eV. The bowl shape distribution of the low-energy H+ is caused by the extended perpendicular heating. The strong correlation between conics and large downward currents suggests that the current-driven electrostatic ion cyclotron wave is an appropriate candidate for the transverse heating mechanism.en_US
dc.formatPDFen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.ispartofJournal of Geophysical Research: Space Physicsen_US
dc.relation.ispartofseries2169-9380en_US
dc.rights©American Geophysical Union 1994. This is this the version of record co-published by the American Geophysical Union and John Wiley & Sons, Inc. It is made available under the CC-BY-NC-ND 4.0 license. Item should be cited as: Liu, Chao, et al. "Fine structure of low‐energy H+ in the nightside auroral region." Journal of Geophysical Research: Space Physics 99.A3 (1994): 4131-4141.en_US
dc.titleFine structure of low-energy H+ in the nightside auroral regionen_US
dc.typeTexten_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume99en_US
dc.citation.issueA3en_US
dc.citation.spage4131en_US
dc.citation.epage4141en_US
dc.description.statusPublisheden_US
dc.description.peerreviewYesen_US
dc.creator.orcid0000-0002-9206-724Xen_US
dc.creator.orcid0000-0002-3150-1137en_US

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