Neutron channeling in a nonmagnetic planar waveguide

We investigate neutron propagation in a middle layer of a planar waveguide which is a tri-layer thin film. A narrow divergent microbeam emitted from the end face of the film is registered. The neutron channeling length is experimentally measured as a function of the guiding channel width. Experimental results are compared with calculations.
Comment: 11 pages, 12 figures, submitted to JETP