An O+ Layer at 1,200 km


THE determination of the ionic composition of the topside ionosphere by means of the ion energy spectrometer on Ariel I (1962 omicron) and the analysis of some of the data have already been reported1. Recently, we have analysed data obtained over the early summer of 1962 during days 117–181.

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  1. 1

    Bowen, P. J., Boyd, R. L. F., Raitt, W. J., and Willmore, A. P., Proc. Roy. Soc., A, 281, 504 (1964).

  2. 2

    Hanson, W. B., Space Res., 3, 282 (North-Holland Publishing Co., 1963).

  3. 3

    Willmore, A. P., Proc. Roy. Soc., A, 281, 140 (1964).

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BOYD, R., LAFLIN, S. & WILLMORE, A. An O+ Layer at 1,200 km. Nature 207, 1185–1186 (1965).

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