Observation of pick-up ions in the solar wind: Evidence for the source of the anomalous cosmic ray component?

Details Observation of pick-up ions in the solar wind: Evidence for the source of the anomalous cosmic ray component? Observation of pick-up ions in the solar wind: Evidence for the source of the anomalous cosmic ray component?

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....5..176h&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 5 p 176-179 (SEE N85-34991 23-93)

Computer Science

Cosmic Rays, Density Distribution, Energy Spectra, Helium Ions, Interplanetary Magnetic Fields, Particle Flux Density, Solar Wind, Ampte (Satellites), Diffusion, Heliosphere, Particle Motion, Pitch (Inclination), Spectrometers, Ultraviolet Radiation

Scientific paper

Singly ionized energetic helium has been observed in the solar wind by using the time-of-flight spectrometer SULEICA on the AMPTE/IRM satellite between September and December, 1984. The energy-density spectrum shows a sharp cut-off which is strongly correlated with the four-fold solar wind bulk energy. The absolute flux of the He+ ions of about 104ions/cm2s is present independent of the IPL magnetic field orientation. The most likely source is the neutral helium of the interstellar wind which is ionized by solar UV-radiation. It is suggested that these particles represent the source of the anomalous cosmic ray component.

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