Physics – Plasma Physics
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3214s03s&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 14, CiteID L14S03
Physics
Plasma Physics
9
Planetary Sciences: Solar System Objects: Saturn, Planetary Sciences: Solar System Objects: Saturnian Satellites, Space Plasma Physics: Transport Processes
Scientific paper
We detected N+ in Saturn's magnetosphere in the range L ~ 3.5 to ~9.5 Saturn Radii (Rs) using data collected by the Cassini Plasma Spectrometer during Saturn Orbit Insertion and the following orbit (Rev A). The presence of N+ in Saturn's magnetosphere has been a source of much debate since Voyager's detection of unresolved mass/charge 14-16 amu ions in this region. Two principal nitrogen sources have been suggested: Titan's atmosphere and nitrogen compounds trapped in Saturn's icy satellite surfaces (Sittler et al., 2004; E. C. Sittler et al., Energetic nitrogen ions within the inner magnetosphere of Saturn, submitted to Journal of Geophysical Research, 2004). The latter may contain primordial nitrogen, likely as NH3 in ice (Stevenson, 1982; Squyers et al., 1983) or N+ that has been implanted in the surface (Delitsky and Lane, 2002). In addition to our nitrogen detection results, we also present an initial examination of possible sources of these ions.
Baragiola Raúl A.
Crary Frank J.
Johnson Robert E.
McComas David John
Reisenfeld Dan
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