Radiation Belts and Plasmapause 

The near-Earth space environment is a complex interaction between Earth's magnetic field, cool plasma moving up from Earth's ionosphere, and hotter plasma coming in from the solar wind. These interactions combine to maintain the radiation belts around Earth. 

In this visualization, the radiation belts (rainbow-color) and plasmapause (blue-green surface) surround Earth, its structure largely determined by Earth's dipole magnetic field (represented by cyan curved lines). The radiation belt is sliced open, simultaneously revealing representative confined charged particles spiraling around the magnetic field structure. Yellow particles represent negative-charged electrons, blue particles represent positive-charged ions. However, if realistically scaled for particle mass and energies, the spiral motion would not be visible at this distance so particle masses and size scales are adjusted to make them visible. The inner blue-green plasmapause boundary is then sliced open to reveal more of the inner structure of the radiation belts, including the innermost belt. 


For more information, visit: 
http://svs.gsfc.nasa.gov/4241 

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