Abstract
IN a recent paper1 we discussed the creation of positive-negative electron pairs by a beam of -rays traversing lead, with atomic number Z = 82. Results have since been obtained with Z = 50 and Z = 65 for -rays of energy hv = 3mc2. It is of interest to compare these with the values given by Bethe and Heitler2, using the Born approximation. We give below the two sets of results, together with the corresponding values of + –, where + and are the average energy of the positron and electron respectively.
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References
Jaeger and Hulme, Proc. Roy. Soc., A, 163, 443 (1936).
Proc. Roy. Soc., A, 146, 83 (1934).
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JAEGER, J. Production of Electron Pairs. Nature 137, 781–782 (1936). https://doi.org/10.1038/137781b0
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DOI: https://doi.org/10.1038/137781b0
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