A method of reducing densities of harmful charged radiation belt particles is includes providing a space-based antenna having a first antenna portion and second antenna portion. The first antenna portion and the second antenna portion are oriented such that their loop planes are perpendicular with respect to the magnetic field of the Earth. The first antenna portion and the second antenna portion are energized with a first frequency and a second frequency, respectively, wherein the first frequency and the second frequency satisfy the relationship that the ratio of the first frequency to the second frequency is equal to the ratio of the second radius to the first radius. The trajectory of energetic particles in the radiation belt, such that the trajectories of energetic particles are shifted into a loss cone.
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