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arXiv · 0910.1469

Quasi-specular albedo of cold neutrons from powder of nanoparticles

R. Cubitt·E. V. Lychagin·A. Yu. Muzychka·G. V. Nekhaev·V. V. Nesvizhevsky·G. Pignol·K. V. Protasov·A. V. Strelkov
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Abstract

We predicted and observed for the first time the quasi-specular albedo of cold neutrons at small incidence angles from a powder of nanoparticles. This albedo (reflection) is due to multiple neutron small-angle scattering. The reflection angle as well as the half-width of angular distribution of reflected neutrons is approximately equal to the incidence angle. The measured reflection probability was equal to ~30% within the detector angular size that corresponds to 40-50% total calculated probability of quasi-specular reflection.

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R. Cubitt, E. V. Lychagin, A. Yu. Muzychka, G. V. Nekhaev, V. V. Nesvizhevsky, G. Pignol, K. V. Protasov, A. V. Strelkov. 2009-10-08. Quasi-specular albedo of cold neutrons from powder of nanoparticles. https://doi.org/10.1016/j.nima.2010.07.049

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