Abstract
INFORMATION on the allotropy of plutonium is available from several laboratories1,2. There is general agreement about the behaviour of specimens undergoing changes of heat content at the rates usually employed, and there is general and tacit agreement to ignore the large hysteresis between heating and cooling effects, using the heating temperatures only in alloy equilibrium diagram work. That equilibrium is not available, even in pure plutonium, at these temperatures is clear from the published work on transformation kinetics3,4.
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References
Second United Nations International Conference on the Peaceful Uses of Atomic Energy, Abramson et al., paper P/327; Konobeevsky, S. T., et al., paper P/2230; Waldron, M. B., et al., paper P/71.
Coffinberry, A. S., et al., “Progress in Nuclear Energy”, 1, Ser. V, Chap. 4 (Pergamon Press, 1956).
Nelson, R. D., “Transformation Kinetics of Plutonium”, Part 1, “A Study of the β → α and α → β Transformations”, U.S. Atom. Energy Comm., Report HW 55778.
Nelson, R. D., “Transformation Kinetics of Plutonium”, Part 2, “A Study of the γ → β → α and α → β → γ Transformations”, U.S. Atomic Energy Comm., Report HW 56843 (1958).
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HILL, J. Allotropic Transformations in Plutonium. Nature 186, 304–305 (1960). https://doi.org/10.1038/186304a0
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DOI: https://doi.org/10.1038/186304a0
