Ion exchange with the solar wind for planets with negligible intrinsic magnetic fields |
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| Authors: | John S Nisbet |
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| Institution: | Ionosphere Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802, U.S.A. |
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| Abstract: | The exchange of ions between the ionosphere of a planet with negligible intrinsic magnetic field, and the solar wind is examined. It is suggested that a balance exists between the outflow of ionospheric ions at the plasmapause and ions from the solar wind in a restricted region close to the subsolar point. This results in a current system towards the subsolar point on the surface of the ionopause and a toroidal magnetic field. Simple calculations are made of the current and field configuration that might result from the system for conditions similar to those encountered on the Viking 1 and 2 transits of the Mars ionosphere. |
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