This graph shows the energetic ion and electron data from the Saturn orbit
insertion interval on June 30 and July 1, 2004. Ion intensity is shown
above the horizontal divider as energy increasing upward. Electron
intensity is shown below the horizontal divider as energy increasing
downward, as measured by the magnetospheric imaging instrument's low
energy magnetospheric measurement system sensor onboard the Cassini
spacecraft. Red indicates high particle intensity, blue is low intensity.
The vertical energy scales run from 30 kilo-electron volts to several
mega-electron volts. Time runs from left to right, with approximately 36
hours of data shown, covering a distance range from Saturn's center
between 783,000 kilometers (487,000 miles) at either end, down to about
78,000 (49,000 miles) at closest approach.
The region above the rings was found to be devoid of ions and electrons;
the region inside the D-ring inner edge was not directly sampled and
absent the magnetospheric imaging instrument ion and neutral camera
remote sensing would have been assumed empty of energetic particles.
The Cassini-Huygens mission is a cooperative project of NASA, the
European Space Agency and the Italian Space Agency. The Jet Propulsion
Laboratory, a division of the California Institute of Technology in
Pasadena, manages the Cassini-Huygens mission for NASA's Science Mission
Directorate, Washington, D.C. The Cassini orbiter was designed, developed
and assembled at JPL. The magnetospheric imaging instrument was designed,
built and is operated by an international team lead by the Applied Physics
Laboratory of the Johns Hopkins University, Laurel, Md.
For more information about the Cassini-Huygens mission, visit
http://saturn.jpl.nasa.gov and the instrument team's home page,
http://sd-www.jhuapl.edu/CASSINI/index.html.
