Abstract
OBSERVATIONS of the tracks of electron–positron ‘pairs’, produced by the passage of γ-radiation through photographic emulsions, have been described recently by Coates and Herz1. By measuring the energy of the particles of a given pair by the scattering method2,3, in those cases in which the two trajectories are of sufficient length, it is possible to determine the quantum energy of the γ-rays.
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References
Coates, A. C., and Herz, R. H., Phil. Mag., 40, 1088 (1949).
Goldschmidt-Clermont, Y., King, D. T., Muirhead, H., and Ritson, D. M., Proc. Phys. Soc., 61, 183 (1948).
Davies, J. H., Lock, W. O., and Muirhead, H., Phil. Mag., 40, 1250 (1949).
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KING, D. Determination of the Energy of High-Energy γ-Rays by the Photographic Method. Nature 165, 526–527 (1950). https://doi.org/10.1038/165526a0
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DOI: https://doi.org/10.1038/165526a0
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