Modeling, Analysis, and Interpretation of Photoelectron Energy Spectra at Enceladus Observed by Cassini

Abstract

The Electron Spectrometer (ELS) of the Cassini Plasma Spectrometer has observed photoelectronsproducedintheplumeofEnceladus.ThesephotoelectronsareobservedduringEnceladus encounters in the energetic particle shadow where the spacecraft is largely shielded from penetrating radiation by the moon. We present a complex electron spectrum at Enceladus including evidence of two previously unidentified electron populations

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