Electron Temperatures in Saturn's Plasma Disk

Details Electron Temperatures in Saturn's Plasma Disk Electron Temperatures in Saturn's Plasma Disk

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufm.p41c1294g&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #P41C-1294

Physics

5719 Interactions With Particles And Fields, 5737 Magnetospheres (2756), 5780 Tori And Exospheres, 6275 Saturn, 7846 Plasma Energization

Scientific paper

We present new results concerning electron temperature (Te) mapping in the inner magnetosphere of Saturn (<10 Rs). The data is obtained by the Langmuir Probe (LP) instrument of the Radio and Plasma Wave Science (RPWS) investigation onboard Cassini. The study is based on the fourteen first orbits around Saturn, and focus on the cold (<10 eV) and dense (10-150 cm-3) electron population in the inner plasma torus (plasma disk). The electron temperatures show variations related to specific magnetic flux tubes. We also infer a local maxima in Te near the equatorial plane, where the E-ring of partly dusty plasma exist, and determine constraints on the energy source required to heat the electrons in this region. We suggest that heating by plasma waves and cooling by E-ring dust are involved in the energy balance.

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