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The electron energy distribution during HF pumping, a picture painted with all colors

The shape of the electron energy distribution has long been a central question in the field of high-frequency 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 multi-wavelength (6300, 5577... Full description

Journal Title: Annales Geophysicae 2005, Vol.23 (5), p.1747-1754
Main Author: GUSTAVSSON, B
Other Authors: SERGIENKO, T , GRYDELAND, T , STEEN, A , LAHOZ, C , KAILA, K , JUSSILA, J , HOLMA, H , KOSCH, M. J , RIETVELD, M. T , BRÄNDSTRÖM, B. U. E , LEYSER, T. B , ISHAM, B , GALLOP, P , ASO, T , EJIRI, M
Format: Electronic Article Electronic Article
Language: English
Subjects:
Rom
Publisher: Katlenburg-Lindau: European Geophysical Society
ID: ISSN: 0992-7689
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title: The electron energy distribution during HF pumping, a picture painted with all colors
format: Article
creator:
  • GUSTAVSSON, B
  • SERGIENKO, T
  • GRYDELAND, T
  • STEEN, A
  • LAHOZ, C
  • KAILA, K
  • JUSSILA, J
  • HOLMA, H
  • KOSCH, M. J
  • RIETVELD, M. T
  • BRÄNDSTRÖM, B. U. E
  • LEYSER, T. B
  • ISHAM, B
  • GALLOP, P
  • ASO, T
  • EJIRI, M
subjects:
  • active experiments
  • Atmosphere
  • Cosmic physics
  • Distribution (Probability theory)
  • Earth Sciences
  • Earth, ocean, space
  • Electrons
  • Exact sciences and technology
  • External geophysics
  • Fysikk
  • Geophysics
  • ionosphere atmosphere interaction
  • ionospheric physics
  • Matematikk og Naturvitenskap
  • Ocean
  • Ocean, Atmosphere
  • og plasmafysikk
  • Physics
  • Physics of the high neutral atmosphere
  • Physics of the ionosphere
  • Physics of the magnetosphere
  • Rom
  • Science
  • Sciences of the Universe
ispartof: Annales Geophysicae, 2005, Vol.23 (5), p.1747-1754
description: The shape of the electron energy distribution has long been a central question in the field of high-frequency 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 multi-wavelength (6300, 5577, 8446, 4278Å) 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 non-thermal tail. Keywords. Active experiments; Ionosphere atmosphere interaction; Ionospheric physics
language: eng
source:
identifier: ISSN: 0992-7689
fulltext: no_fulltext
issn:
  • 0992-7689
  • 1432-0576
  • 1432-0576
url: Link


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titleThe electron energy distribution during HF pumping, a picture painted with all colors
creatorGUSTAVSSON, B ; SERGIENKO, T ; GRYDELAND, T ; STEEN, A ; LAHOZ, C ; KAILA, K ; JUSSILA, J ; HOLMA, H ; KOSCH, M. J ; RIETVELD, M. T ; BRÄNDSTRÖM, B. U. E ; LEYSER, T. B ; ISHAM, B ; GALLOP, P ; ASO, T ; EJIRI, M
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descriptionThe shape of the electron energy distribution has long been a central question in the field of high-frequency 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 multi-wavelength (6300, 5577, 8446, 4278Å) 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 non-thermal tail. Keywords. Active experiments; Ionosphere atmosphere interaction; Ionospheric physics
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subjectactive experiments ; Atmosphere ; Cosmic physics ; Distribution (Probability theory) ; Earth Sciences ; Earth, ocean, space ; Electrons ; Exact sciences and technology ; External geophysics ; Fysikk ; Geophysics ; ionosphere atmosphere interaction ; ionospheric physics ; Matematikk og Naturvitenskap ; Ocean ; Ocean, Atmosphere ; og plasmafysikk ; Physics ; Physics of the high neutral atmosphere ; Physics of the ionosphere ; Physics of the magnetosphere ; Rom ; Science ; Sciences of the Universe
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descriptionThe shape of the electron energy distribution has long been a central question in the field of high-frequency 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 multi-wavelength (6300, 5577, 8446, 4278Å) 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 non-thermal tail. Keywords. Active experiments; Ionosphere atmosphere interaction; Ionospheric physics
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abstractThe shape of the electron energy distribution has long been a central question in the field of high-frequency 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 multi-wavelength (6300, 5577, 8446, 4278Å) 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 non-thermal tail. Keywords. Active experiments; Ionosphere atmosphere interaction; Ionospheric physics
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pubEuropean Geophysical Society
doi10.5194/angeo-23-1747-2005
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