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dc.contributor.authorRietveld, Michael T.
dc.contributor.authorGustavsson, B.
dc.contributor.authorSergienko, T.
dc.contributor.authorGrydeland, Tom
dc.contributor.authorLa Hoz, Cesar
dc.contributor.authorKosch, M.J.
dc.contributor.authorBrändström, B.U.E.
dc.contributor.authorLeyser, T.B.
dc.contributor.authorIsham, B.
dc.contributor.authorGallop, P.
dc.contributor.authorAso, T.
dc.contributor.authorEjiri, M.
dc.contributor.authorSteen, A.
dc.contributor.authorKaila, K.
dc.contributor.authorJussila, J.
dc.contributor.authorHolma, H.
dc.date.accessioned2007-01-24T09:47:31Z
dc.date.available2007-01-24T09:47:31Z
dc.date.issued2005-07-28
dc.description.abstractThe shape of the electron energy distribution has long been a central question in the field of highfrequency radio-induced optical emission experiments. This report presents estimates of the electron energy distribution function, fe(E), from 0 to 60 eV, based on optical multiwavelength (6300, 5577, 8446, 4278 A° ) data and 930-MHz incoherent scatter radar measurements of ion temperature, electron temperature and electron concentration. According to our estimate, the electron energy distribution has a depression at around 2 eV, probably caused by electron excitation of vibrational states in N2, and a high energy tail that is clearly supra-thermal. The temporal evolution of the emissions indicates that the electron temperature still plays an important role in providing electrons with energies close to 2 eV. At the higher energies the electron energy distribution has a nonthermal tail.en
dc.format.extent2174612 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.issn1432-0576 (elektronisk)
dc.identifier.urihttps://hdl.handle.net/10037/553
dc.identifier.urnURN:NBN:no-uit_munin_380
dc.language.isoengen
dc.publisherEuropean Geosciences Unionen
dc.relation.ispartofseriesAnnales Geophysicae 23(2005), pp 1747-1754en
dc.rights.accessRightsopenAccess
dc.subjectactive experimentsen
dc.subjectionosphere atmosphere interactionen
dc.subjectionospheric physicsen
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437en
dc.titleThe electron energy distribution during HF pumping, a picture painted with all colors.en
dc.typeJournal articleen
dc.typePeer reviewed
dc.typeTidsskriftartikkelno


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