Use of extended and prepared reference objects in experimental Fourier transform X-ray holography
Abstract
The use of one or more gold nanoballs as reference objects for Fourier Transform holography (FTH) is analysed using experimental soft X-ray diffraction from objects consisting of separated clusters of these balls. The holograms are deconvoluted against ball reference objects to invert to images, in combination with a Wiener filter to control noise. A resolution of ~30nm, smaller than one ball, is obtained even if a large cluster of balls is used as the reference, giving the best resolution yet obtained by X-ray FTH. Methods of dealing with missing data due to a beamstop are discussed. Practical prepared objects which satisfy the FTH condition are suggested, and methods of forming them described.
Cite
@article{arxiv.physics/0405036,
title = {Use of extended and prepared reference objects in experimental Fourier transform X-ray holography},
author = {H. He and M. Howells and S. Marchesini and H. N. Chapman and U. Weierstall and H. A. Padmore and J. C. H. Spence},
journal= {arXiv preprint arXiv:physics/0405036},
year = {2007}
}
Comments
7 pages, 2 figures, submitted to Applied Physics Letters