Solar cosmic rays as a source of the temporary inner radiation belts Original Research Article

Solar protons penetrate into the inner magnetosphere during strong magnetic storms and can be trapped during the recovery of the magnetosphere configuration. Solar proton measurements by the low altitude polar orbiter Coronas-F show several cases of the direct trapping of the 1–5 MeV protons during the magnetic storm recovery phase. Observation over the Brazilian Magnetic Anomaly results in a study of the time history of the temporal solar proton radiation belts. The model presented in this manuscript also explains the occurrence of the fast intensity decrease of the inner belt protons as a result of the magnetosphere reconfiguration and associated intrusion of the quasitrapping region boundary into the inner belt region.