Modeling the interaction of galactic and solar cosmic rays with the magnetic field of the Earth in the process of inversion

To study the radiation situation on the Earth and in the near-Earth space during the geomagnetic field inversion, the beginning of which is evidenced by observations, a numerical model has been developed that made it possible to calculate and compare the cosmic-ray fluxes in the Earth's magnetosphere in the presence and absence of a dipole component of the field. In this case, the quadrupole component was assumed to be unchanged. According to calculations, at the moment of inversion the total radiation background on the Earth will increase 3 times, and on the ISS orbit it will grow 14 times. The radiation belts in such a field configuration are unstable. Therefore, we considered the second inversion scenario with an axially symmetric quadrupole. Using the Stormer theory and numerical modeling, we determined the particle capture region (in the dipole, quadrupole and their superposition) and the radiation doses in them during the field inversion process.