Cosmic rays

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Composition

Cosmic radiation comprises 85% protons, 14% alpha particles, and 1% heavy ions.[1]

Energy

Energy distribution of cosmic radiation, as measured during the 1977 solar minimum.[2]

References

  1. Schimmerling W. (2011, Feb 5). The Space Radiation Environment: An Introduction. https://three.jsc.nasa.gov/concepts/SpaceRadiationEnviron.pdf
  2. Kim MY, Thibeault SA, Simonsen LC, Wilson JW. (1998). Comparison of Martian Meteorites and Martian Regolith as Shield Materials for Galactic Cosmic Rays. NASA TP-1998-208724. http://hdl.handle.net/2060/19980237030