Abstract

The spin operator at a point, σ(r) ≡ σδ(r' – r), is defined for analysis of behavior of the neutron polarization vector. Polarization of neutrons in a two-level state that traverse regions with magnetic field without being scattered is described in terms of pilot velocity, precession front, nutation and dynamic axes. A scheme of reflectometry of neutrons in two-level states (precessing spin neutron reflectometry) is suggested for a more detailed study of magnetic layered structures.

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