OBSERVATION OF QUASI-BOUND STATES OF NEUTRON IN FABRY-PEROT MAGNETIC THIN-FILM RESONATOR USING LARMOR PRECESSION

Authors have measured Larmor precession angles of neutron spin transmi tted through magnetized permalloy45(PA)-germanium(Ge)-PA and PA-Ge-PA- Ge-PA Fabry-Perot magnetic thin-film resonators at various incident an gles above and below the critical angle of total reflection. The Larmo r precession angles due to the Fabry-Perot resonator show sinusoidal o scillation as a function of the incident angles, which corresponds to quasibound states of the Fabry-Perot resonator for up arrow spin. The oscillation is well reproduced by the theoretical phase difference of up arrow and down arrow spin neutron wave functions based on orle-dime nsional Schrodinger equation. (C) 1998 Elsevier Science B.V. All right s reserved.