Physical and Electronic Properties Changed by Aging Plutonium

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Plutonium, because of its radioactive nature, ages from the ''inside out'' by means of self-irradiation damage and thus produces Frankel-type defects and defect clusters. The defects resulting from the residual lattice damage and helium in-growth could result in microstructural, electronic, and physical property changes. This paper presents volume, density, and electronic property change observed from both naturally and accelerated aged plutonium alloys. Accelerated alloys are plutonium alloys with a fraction of Pu-238 to accelerate the aging process by approximately 18 times the rate of unaged weapons-grade plutonium. After thirty-five equivalent years of aging on accelerated alloys, the samples have swelled ... continued below

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Chung, B W; Tobin, J G; Thompson, S R & Ebbinghaus, B B March 22, 2005.

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Plutonium, because of its radioactive nature, ages from the ''inside out'' by means of self-irradiation damage and thus produces Frankel-type defects and defect clusters. The defects resulting from the residual lattice damage and helium in-growth could result in microstructural, electronic, and physical property changes. This paper presents volume, density, and electronic property change observed from both naturally and accelerated aged plutonium alloys. Accelerated alloys are plutonium alloys with a fraction of Pu-238 to accelerate the aging process by approximately 18 times the rate of unaged weapons-grade plutonium. After thirty-five equivalent years of aging on accelerated alloys, the samples have swelled in volume by approximately 0.1% and now exhibit a near linear volume increase due to helium in-growth. We will correlate the physical property changes to the electronic structure of plutonium observed by the resonant photoelectron spectroscopy (RESPES).

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PDF-file: 4 pages; size: 0.6 Mbytes

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  • Presented at: Physical and Electronic Properties Changed by Aging Plutonium, Manchester, United Kingdom, Jul 04 - Jul 08, 2005

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  • Report No.: UCRL-PROC-210787
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 862380
  • Archival Resource Key: ark:/67531/metadc793708

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • March 22, 2005

Added to The UNT Digital Library

  • Dec. 19, 2015, 7:14 p.m.

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  • Dec. 7, 2016, 7 p.m.

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Chung, B W; Tobin, J G; Thompson, S R & Ebbinghaus, B B. Physical and Electronic Properties Changed by Aging Plutonium, article, March 22, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc793708/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.