X-ray speckle contrast variation at a sample-specific absorption edges

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The authors measured static x-ray speckle contrast variation with the incident photon energy across sample-specific absorption edges. They propose that the variation depends strongly on the spectral response function of the monochromator. Speckle techniques have been introduced to the x-ray regime during recent years. Most of these experiments, however, were done at photon energies above 5 keV. They are working on this technique in the 1 to 4 keV range, an energy range that includes many important x-ray absorption edges, e.g., in Al, Si, P, S, the rare-earths, and others. To their knowledge, the effect of absorption edges on speckle ... continued below

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5 p.

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Retsch, C. C.; Wang, Y.; Frigo, S. P.; Stephenson, G. B. & McNulty, I. May 3, 2000.

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The authors measured static x-ray speckle contrast variation with the incident photon energy across sample-specific absorption edges. They propose that the variation depends strongly on the spectral response function of the monochromator. Speckle techniques have been introduced to the x-ray regime during recent years. Most of these experiments, however, were done at photon energies above 5 keV. They are working on this technique in the 1 to 4 keV range, an energy range that includes many important x-ray absorption edges, e.g., in Al, Si, P, S, the rare-earths, and others. To their knowledge, the effect of absorption edges on speckle contrast has not yet been studied. In this paper, they present their initial measurements and understanding of the observed phenomena.

Physical Description

5 p.

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INIS; OSTI as DE00755862

Medium: P; Size: 5 pages

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  • PCS 2000 Conference, Whistler, British Columbia (CA), 08/21/2000--08/23/2000

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  • Report No.: ANL/XFD/CP-101790
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 755862
  • Archival Resource Key: ark:/67531/metadc708883

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  • May 3, 2000

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 11, 2017, 12:43 p.m.

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Retsch, C. C.; Wang, Y.; Frigo, S. P.; Stephenson, G. B. & McNulty, I. X-ray speckle contrast variation at a sample-specific absorption edges, article, May 3, 2000; Illinois. (digital.library.unt.edu/ark:/67531/metadc708883/: accessed November 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.