Sp. Pogossian et al., Observation of polarization insensitive neutron waveguide modes in magnetic multilayered structures, J PHYS D, 34(12), 2001, pp. 1872-1877
A new polarization insensitive neutron waveguide is proposed and realized e
xperimentally for the simultaneous guiding of two neutron polarizations. Th
e basic idea is the combination of thin film and anti-resonant reflecting w
aveguides into a single structure. With a special transmitted beam techniqu
e two guided modes pertaining to a single polarization are observed in good
agreement with theoretical predictions.