Distortions of the energy distribution of ionospheric thermal electrons near the focus of Sq current vortex

Oyama Koichiro, Kunio Hirao

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Energy distributions of the thermal electrons in the ionospheric plasma were measured on 16 January 1974 and 16 September 1976 by two Japanese rockets, K-9M-45 and K-9M-55 respectively near the focus of Sq current vortex. The main effort was to investigate the energy state of the thermal electrons in a localized hot electron layer which occurs at a height of around 105 km in winter. The results obtained on 16 January 1974 showed that the thermal electrons in the hot electron layer had not a pure Maxwell distribution. While on 16 September 1976, the energy distribution of the electrons was found to be almost Maxwellian in the dynamo region as well as the F-region.

Original languageEnglish
Pages (from-to)183-192
Number of pages10
JournalPlanetary and Space Science
Issue number2
Publication statusPublished - 1979 Jan 1


All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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