The abundance of O++ in the Jovian magnetosphere

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

doi:10.1029/92GL00070

The abundance of O⁺⁺ in the Jovian magnetosphere

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

^*Corresponding author for this work

School of the Environment and Earth Sciences

Research output: Contribution to journal › Article › peer-review

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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 R_J. We observe a sharp rise in O⁺⁺ mixing ratio near 7.5 R_J, 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 language	English
Pages (from-to)	79-82
Number of pages	4
Journal	Geophysical Research Letters
Volume	19
Issue number	2
DOIs	https://doi.org/10.1029/92GL00070
State	Published - 24 Jan 1992

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AU - Shemansky, D. E.

AU - McNutt, R. L.

AU - Schreier, R.

AU - Eviatar, A.

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AB - 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.

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The abundance of O⁺⁺ in the Jovian magnetosphere

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