Abstract
A method of multiple small-angle neutron scattering (MSANS), used to obtain information about inhomogeneities of substances, is considered. Experimental schemes and theory of a double-crystal diffractometer intended for measuring multiple small-angle neutron scattering are described. Methods used to approximate MSANS angular distributions at a low concentration of inhomogeneities and based on Moliére’s theory are reviewed. Their applicability is demonstrated for the examples ofMSANS spectra of samples from ferromagnetic iron-nickel alloys, aluminum powders, and high-T c superconductor ceramic materials. Theoretical and experimental investigations of interference effects that manifest themselves in multiple small-angle neutron scattering on systems containing high concentrations of scatterers are reported.
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Original Russian Text © Yu.G. Abov, F.S. Dzheparov, N.O. Elyutin, D.V. Lvov, A.N. Tyulyusov, 2014, published in Yadernaya Fizika, 2014, Vol. 77, No. 10, pp. 1250–1265.
This articles was prepared on the basis of the report presented at the seminar held on November 7, 2012, and dedicated to the 90th anniversary of Yu.G. Abov’s birth.
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Abov, Y.G., Dzheparov, F.S., Elyutin, N.O. et al. Investigation of multiple ultrasmall-angle neutron scattering with the aid of a double-crystal diffractometer. Phys. Atom. Nuclei 77, 1187–1202 (2014). https://doi.org/10.1134/S1063778814100020
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DOI: https://doi.org/10.1134/S1063778814100020