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: http://www.space.vsi.ru/radiazpe.htm
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The radiation belts around the planets are the interrnal regions of planets' magnetospheres where the own magnetic field of a planet keeps the charged particles (protons and electrons) having the great kinetic energy. In the radiation fields the particles under the force of magnetic field are moving along the complicated trajectory from the North to the South semisphere and the other way round. They usually distinguish the Earth's internal and external radiation belts. the internal radiation belt of the Earth has the maximum particles density (mainly protones) over the equator in the height of 22 thousand km. The radiation belt is a source of the radiation danger during the space flights. Jupiter and Saturn have the powerful radiation belts.
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