Space Radiation Environment
The space radiation environment is a complex mixture of electrons, photons, and all naturally occurring atomic species. The composition of the radiation field at any point within the solar system is variable and depends upon solar activity, as well as local conditions, such as the presence of planetary magnetic fields and atmospheres. The main sources of the particles in these radiation fields include (1) galactic cosmic ray (GCR) particles entering the solar system from interstellar space, (2) charged particles emitted by the sun, and (3) particles trapped within planetary magnetic fields.
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