Sorry to arrive so late to the party.

Found this site after listening to Fraser and Pamela guest on the skeptic's guide and have been working my way up through these fascinating podcasts.

I have a question about the nature of the radiation in Jupiter's magnetosphere.
Pamela mentioned that there would be alpha radiation and photons (would that be microwaves?), but it seemed to me that the electrons moving at reletavistic speeds would qualify as beta radiation.

Noting that Jupiter's radiation belts were similar Earth's Van Allen belts, a little research (from http://www.clavius.org/envrad.html, primarily) indicated that a key hazard there are protons.

Thus, I can summarize my inquiry by asking what kind of radiation would one expect near Jupiter (say, near Io) and what you could do to shield a potential traveler from it?

Thanks!