Modeling Jupiter's internal electrostatic discharge environment

A method is provided for determining the internal electrostatic discharge environment of Jupiter for future Jovian missions. Jupiter's severe radiation environment is believed to have caused at least 42 internal electrostatic discharge events during the Voyager I flyby. A set of simple tools is presented that allows estimates of the peak electron fluxes and mission fluences for both circular orbits and for equatorial flyby missions with a factor of 2-3 variation. These tools are based on the Divine-Garrett model (Divine, T. N., and Garrett, H. B., "Charged Particle Distributions in Jupiter's Magnetosphere," Journal of Geophysical Research, Vol. 88, No. A9,1983, pp. 6889-6903) and recent data from the Galileo mission. Sample applications are presented.