Abstract
A NUMBER of experiments have been made on the angular distribution of electron-positron pairs liberated by a beam of γ-rays, but the results, where it is possible to compare, them, do not seem to be in agreement. It is therefore of interest to see what the theory predicts, and in the following a short account is given of the results obtained by a rigorous treatment of the problem. The method used is an extension of that given by us1 to find the total number of pairs created. So far, the calculations have been made for Z (atomic number) = 84, hν = 5 mc2, and Z = 50, hν = 3 mc2 and 5 mc2, where hν is the energy of the γ-ray.
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References
Jaeger and Hulme, Proc. Roy. Soc., A, 153, 443 (1936).
Bethe and Heitler, Proc. Roy. Soc., A, 146, 83 (1934).
Grosev and Frank, Comptes rendus (Doklady), 19, 52 (1938).
Alichanian, Dzelepov and Spivac, Comptes rendus (Doklady), 19, 379 (1938).
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JAEGER, J., HULME, H. Angular Distribution of Electron Pairs. Nature 142, 573 (1938). https://doi.org/10.1038/142573a0
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DOI: https://doi.org/10.1038/142573a0
