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Interplanetary Pick-Up Ion Acceleration A Study of Anisotropic Phase-Space Diffusion

Fahr, H. J.; Chalov, S. V.

Interplanetary pick-up ions originate from ionizations of neutral interstellar atoms in the heliosphere. Over the past periods it was generally expected that after pick-up by the frozen-in solar wind magnetic fields these ions quickly isotropize in velocity space by strong pitch- angle scattering, they do, however, not assimilate to the ambient so…