Abstract
In this paper, Voyager 1 plasma wave instrument observations of lightning‐generated whistlers are combined with Voyager 1 plasma instrument heavy ion (8 ≤ A/Z ≤ 64) charge concentrations to investigate the concentration of light ions (A/Z < 8) along the whistler propagation path. Two models for light ion concentration over dipole L shells for L between 5.2 and 6.2 are obtained, one giving a constant concentration along the field line and the other corresponding to an exponential density distribution. Near the equator the light ion concentration ranges from only about 1 to 10% of the heavy ion concentration, while outside of the torus, at distances of from 1 to 1.5 RJ above the equator, the light ions are the dominant species.
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More From: Journal of Geophysical Research: Space Physics
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