Composition of Anomalous Cosmic Rays and Other Heliospheric Ions

  title={Composition of Anomalous Cosmic Rays and Other Heliospheric Ions},
  author={Alan C. Cummings and Edward C. Stone and Conrad Steenberg},
Interstellar pickup ions accelerated by the termination shock of the solar wind dominate the anomalous cosmic-ray (ACR) intensities observed by the Voyager spacecraft in the outer heliosphere. Using a twodimensional acceleration and propagation model, we derive the relative abundances of these interstellar ACRs and determine the mass dependence of the injection/acceleration efficiency for the diffusive acceleration of H+, He+, N+, O+, and Ne+. The energy spectra of C, Na, Mg, Si, S, and Ar also… CONTINUE READING
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