Resonances and off-specular scattering in neutron waveguides
Frank Laboratory of Neutron Physics, JINR, 141980 Dubna, Moscow Region, Russian Federation
2 CEA, IRAMIS, Laboratoire Léon Brillouin, 91191 Gif-sur-Yvette, France CNRS, IRAMIS, Laboratoire Léon Brillouin, 91191 Gif-sur-Yvette, France
3 Institut für Festkörperforschung, Forschungszentrum Jülich, 52425 Jülich, Germany
4 Research Institute for Solid State Physics and Optics, POB 49, 1525 Budapest, Hungary
Off-specular neutron scattering from layered resonant systems has been studied. As an example, tri-layer neutron waveguides have been investigated exp- erimentally by neutron reflectometry. In such systems, the neutron wave function is strongly localized in the guiding layer. The resonant states in the total reflection region lead to enhanced off-specular scattering from the interface roughness. The relation between the resonant states and off-specular scattering is discussed.
© EDP Sciences, Springer-Verlag, 2009