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Phys. Rev. B 55, R3323–R3327 (1997)

X-ray fluorescence holography and multiple-energy x-ray holography: A critical comparison of atomic images

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P. M. Len
Physics Department, University of California, Davis, California 95616

T. Gog
Oak Ridge National Laboratory at the National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973

C. S. Fadley
Physics Department, University of California, Davis, California 95616
and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720

G. Materlik
Hamberger Synchrotronstrahlungslabor HASYLAB am Deutsches Elektronen-Synchrotron DESY, D-22603 Hamburg, Germany

We compare x-ray fluorescence holography (XFH) and multiple-energy x-ray holography (MEXH), two techniques that have recently been used to obtain experimental three-dimensional atomic images. For single-energy holograms, these methods are equivalent by virtue of the optical reciprocity theorem. However, XFH can only record holographic information at the characteristic fluorescence energies of the emitting species, while MEXH can record holographic information at any energy above the fluorescent edge of the emitter, thus enabling the suppression of real-twin overlaps and other aberrations and artifacts in atomic images.

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.55.R3323
DOI:
10.1103/PhysRevB.55.R3323
PACS:
78.70.En