Abstract
In a series of measurements on the absorption of γ-rays of uranium X, Marieta da Silveira1 found some irregularities. They were finally ascribed to the emission of neutrons by uranium XII, which would lead to uranium Z. Evidence against this will be given in this communication, together with a possible explanation of the anomalies.
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References
da Silveira, M., Portugalice Physica, 1, 167 (1945).
Groendijk, H., and de Vrieš, HI., Physica, 10, 381 (1943).
Arch, f. Math. Ast. o. Phys.t 29, Ho. 17 (1943).
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DE VRIES, H., GROENDIJK, H. Evidence Against Spontaneous Emission of Neutrons by Uranium X. Nature 160, 435–436 (1947). https://doi.org/10.1038/160435b0
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DOI: https://doi.org/10.1038/160435b0
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