Polarization and analysis of ultracold neutron polarization by magnetic films in experiments on search for neutron electric dipole moment

The usual analysis of experiments with polarized neutrons, particularly of search for neutron in experiments, is shown to be not sufficiently comprehensive. To analyze the analysis deficiency the ultracold neutron transmission through one or several magnetic foils with rescattering taken into account is considered. The number of phenomenological parameters characterizing reflection and transmission of a magnetic film is determined in a two-component model and in a model of the density matrix. Some previous works on this subject are criticized