The abundance of O++ in the Jovian magnetosphere

F. Bagenal, D. E. Shemansky, R. L. McNutt, R. Schreier, A. Eviatar

Research output: Contribution to journalArticlepeer-review

Abstract

From a synthesis of data from the Plasma Science and Ultraviolet Science instruments on the Voyager 1 spacecraft we present a radial profile of O++ abundance between 4.9 and 42 RJ. We observe a sharp rise in O++ mixing ratio near 7.5 RJ, coincident with a sharp rise in effective electron temperature at the outer boundary of the Io plasma torus. Beyond 8.5 Rj the O++ mixing ratio is found to be roughly constant which indicates freezing of the ionization prevailing at the outer edge of the hot torus.

Original languageEnglish
Pages (from-to)79-82
Number of pages4
JournalGeophysical Research Letters
Volume19
Issue number2
DOIs
StatePublished - 24 Jan 1992

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