Gregory Czap, Kyungju Noh, et al.
APS Global Physics Summit 2025
The effect of the finite size of atomic electron shells on the minimum X-ray absorption of the six-beam (0 0 0, 2 2 0, 2 4 2, 0 4 4, 2 2 4, 2 0 2) Borrmann diffraction is discussed. An X-ray wave field calculation shows that the minimum photoelectric absorption in Ge by the L electrons located at a distance of r = 0.086 A ̊ from the centres of the atoms is about 2 cm-1, one hundred times higher than the absorption coefficient of 0.02 cm-1 at r = 0. We explain the absorption of the six-beam Borrmann diffraction observed experimentally using this result. Our analysis also predicts that the multiple-beam Borrmann effects should be less observable in Si and in diamond. © 1990.
Gregory Czap, Kyungju Noh, et al.
APS Global Physics Summit 2025
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
Biancun Xie, Madhavan Swaminathan, et al.
EMC 2011
William G. Van der Sluys, Alfred P. Sattelberger, et al.
Polyhedron