Debye-Waller factors of the light actinide metals

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Time-of-flight neutron powder diffraction was used to determine the Debve-Waller factors of light actinide metals. The Debye-Waller factor is a measure of the mean-square atomic displacement that arises from the thermal motion ofthe atoms in any solid. Its temperature dependence determines a Debye-Waller temperature, {Theta}{sub DW}, that is characteristic of the elastic properties of the solid. The data are obtained by Rietveld analysis of neutron diffraction powder patterns obtained at several temperatures. Results are presented for {alpha}-U, {alpha}-Np, {alpha}-Pu and {delta}-Pu{sub 0.95}Al{sub 0.05}. The {Theta}{sub DW}`s are temperature dependent, and anharmonic interatomic forces seem to be required to explain the … continued below

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15 p.

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Lawson, A. C.; Goldstone, J. A.; Cort, B.; Sheldon, R. I. & Foltyn, E. M. October 1, 1993.

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Time-of-flight neutron powder diffraction was used to determine the Debve-Waller factors of light actinide metals. The Debye-Waller factor is a measure of the mean-square atomic displacement that arises from the thermal motion ofthe atoms in any solid. Its temperature dependence determines a Debye-Waller temperature, {Theta}{sub DW}, that is characteristic of the elastic properties of the solid. The data are obtained by Rietveld analysis of neutron diffraction powder patterns obtained at several temperatures. Results are presented for {alpha}-U, {alpha}-Np, {alpha}-Pu and {delta}-Pu{sub 0.95}Al{sub 0.05}. The {Theta}{sub DW}`s are temperature dependent, and anharmonic interatomic forces seem to be required to explain the results.

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15 p.

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INIS; OSTI as DE94000685; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

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  • Actinides `93,Santa Fe, NM (United States); San Francisco, CA (United States),19-24 Sep 1993; 27 Feb - 3 Mar 1994

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  • Other: DE94000685
  • Report No.: LA-UR--93-3463
  • Report No.: CONF-930905--9
  • Report No.: CONF-940221--1
  • Grant Number: W-7405-ENG-36
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 10103448
  • Archival Resource Key: ark:/67531/metadc1280005

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  • October 1, 1993

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  • Oct. 12, 2018, 6:44 a.m.

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  • Nov. 13, 2018, 1:02 p.m.

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Lawson, A. C.; Goldstone, J. A.; Cort, B.; Sheldon, R. I. & Foltyn, E. M. Debye-Waller factors of the light actinide metals, article, October 1, 1993; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1280005/: accessed June 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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