Abstract
IN his paper "Mechanism of Nuclear Fission", Bohr1 has explained the emission of delayed neutrons from certain members of the fission chains as due to the product being in a sufficiently highly excited state after the emission of β-particles. Of the other possibilities, production of delayed neutrons by (γ, n) reaction by the γ-rays after a β-disintegration, following Bohr, can be excluded simply because of the absence of sufficiently energetic γ-rays in fission chains reported in the Plutonium Project Report2.
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References
Bohr et al., Phys. Rev., 56, 426 (1939).
Plutonium Project Report, J. Amer. Chem. Soc., 68, 2411 (1946).
Skaggs et al., Phys. Rev., 73, 420 (1948).
Goodman, Nucleonics, 1, 22 (1947).
Wiedenbeck, Phys. Rev., 69, 235 (1946).
Knable et al., Bull. Amer. Phys. Soc., 23, (3), 20 (1948).
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DAS, S. Delayed Neutrons. Nature 162, 853 (1948). https://doi.org/10.1038/162853a0
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DOI: https://doi.org/10.1038/162853a0
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