Abstract
DURING the examination of about three thousand cosmic stars in Ilford G5 plates 200µ thick, exposed at balloon altitude, we observed in several cases two prongs of comparable length, making a small angle with each other, ending in the emulsion and looking like α-particles of about 10–20 MeV.
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Similar work has already been done on this subject by D. H. Perkins (private communication).
Hemmendinger, Phys. Rev., 73, 806 (1948); 75, 1267 (1949).
Tollestrup, Fowler and Lauritsen, Phys. Rev., 76, 428 (1949).
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CRUSSARD, J. Decay Energy of Beryllium-8 Nuclei observed in Cosmic Ray Stars. Nature 166, 825 (1950). https://doi.org/10.1038/166825a0
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DOI: https://doi.org/10.1038/166825a0
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