Abstract
THE observed east-west asymmetry of the cosmic radiation, and its increase with increasing altitude, has been interpreted in terms of an unbalanced primary radiation which is positively charged. It has been suggested by Compton and Bethe that the radiation probably consists of protons, the rest of the primary radiation consisting of equal numbers of positrons and electrons.
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References
Swann, Phys. Rev., 44, 124; 1933.
Ross Gunn, Phys. Rev., 45, 900; 1934.
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WALKE, H. Positive and Negative Ions in the Primary Cosmic Radiation. Nature 136, 681 (1935). https://doi.org/10.1038/136681a0
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DOI: https://doi.org/10.1038/136681a0
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