Small-angle scattering of neutrons on large scale inhomogeneities in refraction range

Details Small-angle scattering of neutrons on large scale inhomogeneities in refraction range Small-angle scattering of neutrons on large scale inhomogeneities in refraction range

1998-08-11

arxiv.org/abs/cond-mat/9808111v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages, latex,, no figures; to appear in Surface (in Russian)

Scientific paper

The small-angle scattering of neutrons on large scale inhomogeneities of two-component systems in refraction range is considered. We supposed, that neutrons acquire phase shifts describing by the Gaussian distribution function. It is shown that the average cross section of scattering contains two contributions. The first contribution describes the diffraction and in the asymptotic limit of large transfer momentum this contribution is proportional to q^{- \Delta}, where 2 \leq \Delta \leq 4. The second contribution is similar to the Fraunhofer diffraction, which in the asymptotic limit of large transfer momentum is proportional to q^{-3}.

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