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Multiple-energy x-ray holography with atomic resolution


Gog T, Eisenhower RA, Menk RH, Tegze M, LeDuc G

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
92 (1-3): 123-129 MAY 1998

Abstract:
Recent approaches to achieving atomic resolution with holographic methods and directly image atomic structures in the bulk at surfaces and interfaces of solids have become increasingly successful. Multiple-energy X-ray holography (MEXH), a particular implementation of such a method, is reviewed and its first applications to bulk crystals and nano-clusters suspended in a crystalline matrix is presented. MEXH utilizes X-rays to generate an interference field within the sample, then determines its strength at specific atomic sites from fluorescence emissions. Scanning reciprocal space, a hologram is recorded from which local atomic structures can be reconstructed by Fourier transformation. Image aberrations known to distort single-energy holograms are effectively suppressed in this novel multi-energy technique. (C) 1998 Elsevier Science B,V. All rights reserved.

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