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Radial variations in the Io plasma torus during the Cassini era

Delamere, P. A.; Bagenal, F.; Steffl, A.

A radial scan through the midnight sector of the Io plasma torus was made by the Cassini Ultraviolet Imaging Spectrograph on 14 January 2001, shortly after closest approach to Jupiter. From these data, Steffl et al. (2004a) derived electron temperature, plasma composition (ion mixing ratios), and electron column density as a function of radius fro…