Galileo Measurements of the Jovian Electron Radiation Environment

Details Galileo Measurements of the Jovian Electron Radiation Environment Galileo Measurements of the Jovian Electron Radiation Environment

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsm12c..02g&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SM12C-02

Physics

2194 Instruments And Techniques, 2720 Energetic Particles, Trapped

Scientific paper

The Galileo spacecraft Energetic Particle Detector (EPD) has been used to map Jupiter's trapped electron radiation in the jovian equatorial plane for the range 8 to 16 Jupiter radii (1 jovian radius = 71,400 km). The electron count rates from the instrument were averaged into 10-minute intervals over the energy range 0.2 MeV to 11 MeV to form an extensive database of observations of the jovian radiation belts between Jupiter orbit insertion (JOI) in 1995 and end of mission in 2003. These data were then used to provide differential flux estimates in the jovian equatorial plane as a function of radial distance (organized by magnetic L-shell position). These estimates provide the basis for an omni-directional, equatorial model of the jovian electron radiation environment. The comparison of these results with the original Divine model of jovian electron radiation and their implications for missions to Jupiter will be discussed. In particular, it was found that the electron dose predictions for a representative mission to Europa were about a factor of 2 lower than the Divine model estimates over the range of 100 to 1000 mils (2.54 to 25.4 mm) of aluminum shielding, but exceeded the Divine model by about 50% for thicker shielding for the assumed Europa orbiter trajectories. The findings are a significant step forward in understanding jovian electron radiation and represent a valuable tool for estimating the radiation environment to which jovian science and engineering hardware will be exposed.

Affiliated with

Also associated with

No associations

Rating

Galileo Measurements of the Jovian Electron Radiation Environment does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Galileo Measurements of the Jovian Electron Radiation Environment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galileo Measurements of the Jovian Electron Radiation Environment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1648092