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Direct measurements of ion composition with EISCAT in the high-latitude F1 region


  • C. Lathuillere,

  • G. Lejeune,

  • W. Kofman


We present a method for obtaining O+ relative abundance directly from the autocorrelation functions measured by EISCAT; no assumption is made regarding the temperatures. Results of O+ relative abundance and temperatures obtained simultaneously are shown for a 20-hour period on May 9, 1982, and the time variations of O+ relative abundance are compared to previous work.

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