Data processing for obtaining atomic images from SrTiO3 X-ray fluorescencehologram

It is difficult to obtain a clear atomic image from a measured X-ray fluore scence hologram, because the holographic undulation in the angular distribu tion of the X-ray fluorescence intensity is feeble. We introduce here our n umerical data process to reconstruct an atomic image from the SrTiO3 (001) hologram data reported in a previous paper [J. Kawai et al.: Anal. Sci. 14 (1998) 903]. The holographic oscillation, which could not be seen in the ra w data, was revealed by the Savitzky-Golay smoothing method. We also consid ered the effect of the hologram size on the reconstructed image of Sr atoms , and found that the spatial resolution of the image became higher with an increase of the size in the hologram.