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Pick-up Ion Measurements in the Heliosphere – A Review

Geiss, J.; Gloeckler, G.; von Steiger, R. +1 more

Measurements of the composition and spatial distribution of pick-up ions inside the heliosphere are reviewed. The first interstellar ⁴He⁺pick-up ions were detected with the SULEICA instrument on the AMPTE spacecraft near Earth's orbit. Most data on pick-up ions were taken in the solar-wind and suprathermal energy range of SWI…