TITLE

The stabilization of fcc plutonium: A solid-state-solution-like phase of stable and fluctuating configuration plutonium

AUTHOR(S)
Cooper, Bernard R.
PUB. DATE
July 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 532 Issue 1, p36
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
It has been evident for some time that the unusual structural behavior found in plutonium is related to the localization mechanism for the 5f electrons in going from alpha to delta plutonium. The atomic volume expands by sharply defined steps at the alpha-to-beta, beta-to-gamma, and gamma-to-delta transition temperatures. Here we explain this behavior on the basis of a multistep 5f localization process involving spatially nonuniform localization. That is, we suggest that a disordered array of two types of plutonium on crystallographically equivalent fcc sites breaks the translational symmetry and provides an entropy generating mechanism that drives the transition to the delta structure. © 2000 American Institute of Physics.
ACCESSION #
5663317

 

Related Articles

  • Crystallography of the d ? a Martensitic Transformation in Plutonium Alloys. Jin, Yongmei M.; Wang, Yu U.; Khachaturyan, Armen G.; Krenn, Chris R.; Schwartz, Adam J. // Metallurgical & Materials Transactions. Part A;Aug2005, Vol. 36 Issue 8, p2031 

    A new stress-accommodating crystallographic mechanism of the d ? a martensitic transformation in plutonium alloys is proposed. According to this mechanism, an orientation variant of the a phase is produced by a combination of a homogeneous swain and shuffling of the alternating close-packed...

  • Plutonium--no supply, no demand? Lanouette, W. // Bulletin of the Atomic Scientists;Dec1989, Vol. 45 Issue 10, p42 

    Discusses the International Plutonium Control Act, opinions pro and con, and the history behind it. INSET: A history of cutoff proposals.;The tritium tiff (opinions on....

  • Designing with an eye on plutonium's risks. Spotts, Peter N. // Christian Science Monitor;12/17/96, Vol. 89 Issue 16, p12 

    Reports that planners for National Aeronautics & Space Association's Cassini mission, said that they are working to keep risks which are involved in using nuclear power sources in space to a minimum. Reason the nuclear power sources use plutonium 238; What is used to produce electricity in space.

  • Japan's plutonium stockpile. Crossley, M. // New Scientist;2/1/92, Vol. 133 Issue 1806, p34 

    Examines the growing gap between Japan's ability to accumulate plutonium and its ability to consume it. Expected amount of plutonium Japan will receive over the next 20 years; Concern expressed over Japan's long-term energy strategy; Its increasing dependence on nuclear power. INSET: The...

  • The plutonium factor. Becker, M.; Waller, D. // Newsweek;3/14/1988, Vol. 111 Issue 11, p67 

    Ronald Reagan ordered a major increase in US plutonium production in the early 1980s as part of his proposed arms buildup. But Congress didn't give Reagan all the MX missiles and other weapons he wanted, so now the nation is awash in pluto nium. Meanwhile, all but one of the country's aging...

  • West Valley plutonium and americium-241 in Lake Ontario sediments off the mouth of Niagara River of Niagara River Joshi, S. R. // Water, Air & Soil Pollution;Nov1988, Vol. 42 Issue 1/2, p159 

    No abstract available.

  • Hot footprints. Fenyvesi, Charles // U.S. News & World Report;8/1/94, Vol. 117 Issue 5, p19 

    Advises that the Pentagon has ruled out the possibility that 6 grams of weapons-grade plutonioum that was seized in May 1994 by German police was stolen from a nuclear warhead being dismantled in the former Soviet Union. Belief that the plutonium came from the weapons production complex run by...

  • Plutonium ship secretly sets sail for Europe. Cross, Michael // New Scientist;8/29/92, Vol. 135 Issue 1836, p6 

    Reports that the Akatsuki Maru has left to ferry plutonium from Europe to Japan. The ship has felt pressure from a worldwide campaign of protests; What the plutonium will be used for; What opponents of the shipment say.

  • Plutonium: How friendly and how reliable?  // U.S. News & World Report;2/7/94, Vol. 116 Issue 5, p19 

    Reports that the world has too much plutonium--and too few choices about what to do with it. Number of pounds needed to make a nuclear bomb; Surplus plutonium as the United States and Russia dismantle their nuclear arsenals; Worry about theft and terrorism; Safety fears; Creation of an animated...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics