Abstract
A comparison has been made between the overabundance of heavy elements in the primordial cosmic radiation and the cross-section for ionization by charged particle impacts. It is found that there is evidence that this type of ionization is important for the selection of cosmic ray particles.
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Kristiansson, K. Further evidence for a cosmic ray selection mechanism. Astrophys Space Sci 16, 405–412 (1972). https://doi.org/10.1007/BF00642339
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DOI: https://doi.org/10.1007/BF00642339