Zeeman neutron tunneling in “NiCoNi” thin film resonators

Abstract Polarized neutron tunneling measurements are reported, achieved by using simple and double thin film NiCoNi Fabry-Perot resonators operating in the total reflection geometry in the polarized configuration. Due to the Zeeman magnetic interaction term in the cobalt layers mainly, a spatial separation of the spin up and down states results. The Zeeman tunneling splitting within such resonators can be exploited to produce monochromatic and polarized neutron beams in the range of λ ≥ 10 A .