Density changes in Ga-stabilized delta-Pu, and what they mean

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Ga-stabilized {delta}-Pu undergoes small changes in density with time. These have been associated with four different causes: an initial reversible expansion that saturates after a short time; a continuous change that can be attributed to the in-growth of helium and actinide daughter products from the radioactive decay of plutonium; possible void swelling; and phase instability. We review our present understanding of these processes and evaluate their contributions to density changes. It is shown that the initial transient expansion is intimately connected with the metastability of the {delta}-phase at ambient temperature.

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PDF-file: 37 pages; size: 0.4 Mbytes

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G.Wolfer, W; Kubota, A; S?derlind, P; Landa, A; Oudot, B; Sadigh, B et al. September 8, 2006.

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Ga-stabilized {delta}-Pu undergoes small changes in density with time. These have been associated with four different causes: an initial reversible expansion that saturates after a short time; a continuous change that can be attributed to the in-growth of helium and actinide daughter products from the radioactive decay of plutonium; possible void swelling; and phase instability. We review our present understanding of these processes and evaluate their contributions to density changes. It is shown that the initial transient expansion is intimately connected with the metastability of the {delta}-phase at ambient temperature.

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PDF-file: 37 pages; size: 0.4 Mbytes

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  • Journal Name: Journal of Alloys and Compounds, vol. 444-445, n/a, November 22, 2006, pp. 72-79; Journal Volume: 444-445

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  • Report No.: UCRL-JRNL-224407
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 923621
  • Archival Resource Key: ark:/67531/metadc892997

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  • September 8, 2006

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 9, 2016, 9:12 p.m.

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G.Wolfer, W; Kubota, A; S?derlind, P; Landa, A; Oudot, B; Sadigh, B et al. Density changes in Ga-stabilized delta-Pu, and what they mean, article, September 8, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc892997/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.