NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
J O. Cross, M I. Bell, M Newville, J J. Rehr, L B. Sorensen, Charles E. Bouldin, G Watson, T Gouder, G H. Lander
Abstract
Resonant elastic scattering amplitudes [Δ]f = f[u'] + if[u''] in the vicinity of the absorption edges have been obtained by applying a differential Kramers-Kronig transform to theoretical absorption cross-sections calculated by the ab initio x-ray absorption code FEFF. By including solid-state effects due to the local environment of a resonant atom, FEFF makes significant improvements to existing calculations of the resonant scattering amplitudes. The results are compared to experimental measurements of Bragg peak intensities as a continuous function of energy for Cu metal and Yba[d2}Cu[d3]O[d6.8] at the Cu K absorption edge, and for UO[d2] at the U M[dIV] absorption edge. PACS numbers:61.10.Dp,78.70.Ck,61.10.YH,32.30Rj
Citation
Physical Review B (Condensed Matter and Materials Physics)
Cross, J.
, Bell, M.
, Newville, M.
, Rehr, J.
, Sorensen, L.
, Bouldin, C.
, Watson, G.
, Gouder, T.
and Lander, G.
(2021),
Improved Theoretical X-Ray Resonant Scattering Amplitudes, Physical Review B (Condensed Matter and Materials Physics)
(Accessed October 13, 2025)