Abstract
AbstractNew small angle coherent scattering data are presented in order to emphasize the need to update available open‐access databases. The first aim is to integrate the present atomic form factor tabulations, which permit us to obtain the linear differential scattering coefficient of a compound from a simple weighted sum of the elemental components, by including the effect of the large‐scale arrangement of the sample structure beside the molecular interference effect. These features, which can lead the intensity of scattered photons to present huge upturns at small values of the momentum transfer, are presented for some biological tissues and poly(methyl methacrylate) and their influence on the calculation of both the coherent mass attenuation coefficient and the total value is investigated. Copyright © 2005 John Wiley & Sons, Ltd.
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